[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "11.2"]
[White "Liang, Awonder"]
[Black "Salimova, Nurgyul"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "2592"]
[BlackElo "2397"]
[Annotator "Shahid"]
[PlyCount "67"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,54,24,16,16,38,17,22,13,5,24,20,15,7,5,-4,7,5,31,22,49,24,27,2,2,6,-3,
-3,58,51,36,36,69,69,98,98,98,60,92,82,170,134,170,126,130,82,92,60,231,199,
203,205,309,305,330,347,347]} 1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Nf3
{[%emt 0:00:08]} Nc6 {[%emt 0:00:00]} 3. Bc4 {[%emt 0:00:05]} Nf6 {[%emt 0:00:
06]} 4. d3 {[%emt 0:00:02]} Be7 {[%emt 0:00:05]} 5. O-O {[%emt 0:00:09]} O-O {
[%emt 0:00:08]} 6. a4 {[%emt 0:00:05]} d6 {[%emt 0:00:07]} 7. h3 {[%emt 0:00:
02]} h6 {[%emt 0:00:23]} 8. Re1 {[%emt 0:00:12]} Kh8 {[%emt 0:01:06]} 9. c3 {
[%emt 0:00:16]} Nh7 {[%emt 0:01:26]} 10. d4 {[%emt 0:02:13]} f5 {[%emt 0:00:33]
} 11. Bd5 {[%emt 0:01:27]} exd4 {[%emt 0:02:04]} 12. cxd4 {[%emt 0:00:08]} Nb4
{[%emt 0:00:44]} 13. Nc3 {[%emt 0:00:17]} c6 {[%emt 0:00:16]} 14. Bb3 {[%emt 0:
00:03]} fxe4 {[%emt 0:00:05]} 15. Nxe4 {[%emt 0:00:01]} d5 $2 {[%emt 0:00:18]}
(15... Bf5) 16. Ne5 {[%emt 0:00:29]} Kg8 {[%emt 0:01:55]} (16... Bf5) 17. Bd2 {
[%emt 0:00:58]} a5 {[%emt 0:00:18]} 18. Ng3 {[%emt 0:00:17]} Qd6 {[%emt 0:00:
19]} 19. Qh5 {[%emt 0:00:22]} Bd7 {[%emt 0:00:34]} 20. Ng6 {[%emt 0:01:28]} Rf7
{[%emt 0:00:12]} 21. Ne4 {[%emt 0:01:43]} Qc7 {[%emt 0:00:12]} 22. Bf4 {
[%emt 0:00:01]} Qd8 {[%emt 0:00:12]} 23. Bd6 {[%emt 0:00:15]} Bf6 {[%emt 0:00:
26]} 24. Bxb4 {[%emt 0:00:08]} axb4 {[%emt 0:00:02]} 25. Nd6 {[%emt 0:00:01]}
Bg4 {[%emt 0:00:23]} 26. Bxd5 {[%emt 0:00:08]} cxd5 {[%emt 0:00:06]} 27. Qxd5 {
[%emt 0:00:01]} Ng5 {[%emt 0:00:06]} 28. hxg4 {[%emt 0:00:20]} Kh7 {[%emt 0:00:
01]} 29. Qf5 {[%emt 0:00:04]} Kg8 {[%emt 0:00:09]} 30. Nxf7 {[%emt 0:00:10]}
Nxf7 {[%emt 0:00:05]} 31. Re6 {[%emt 0:00:05]} Qxd4 {[%emt 0:00:02]} 32. Rae1 {
[%emt 0:00:02]} Qd7 {[%emt 0:00:05]} 33. Re7 {[%emt 0:00:08]} Qc6 {[%emt 0:00:
12]} (33... Qxf5 34. Re8+ Kh7 35. gxf5) 34. Rxf7 {[%emt 0:00:03]} 1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "11.3"]
[White "Yoo, Christopher Woojin"]
[Black "Praggnanandhaa R"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2455"]
[BlackElo "2608"]
[Annotator "TA"]
[PlyCount "146"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 67,67,1120]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 h5 6. Bg5
{B33: Sicilian: Pelikan and Sveshnikov Variations.} Qa5 7. Bxf6 gxf6 {[#]} 8.
Be2 $146 {White is slightly better.} ({Predecessor:} 8. Nb3 Qg5 9. Qd3 e6 10.
h4 Qe5 11. Be2 a6 12. O-O-O b5 13. g3 Qc7 14. f4 {1/2-1/2 (36) Villalba, M
(2258)-Aravindh,C (2641) chess.com INT 2020}) 8... e6 9. Ndb5 Be7 10. a3 (10.
Bxh5 $2 a6 $19) 10... a6 {[#]} 11. b4 $1 Qb6 {[#]} (11... Qd8 12. Nd6+) 12. Na4
$1 Qd8 13. Nd6+ Bxd6 14. Qxd6 b5 15. Nc5 Qe7 16. Qc7 Qd8 17. Qg3 d6 18. Qg7 Ke7
$1 $17 {White is on the road to losing.} 19. e5 $2 Nxe5 $19 ({But not} 19...
dxc5 $2 20. exf6+ Kd6 21. O-O-O+ (21. Qg3+ e5 $18) 21... Nd4 22. Bf3 $18) (
19... fxe5 20. Ne4) 20. Ne4 Nd7 $1 21. Nxd6 $6 (21. Qg3 $142 Qb6 22. Rd1) 21...
Kxd6 22. Qxf7 Bb7 23. c4 bxc4 ({Weaker is} 23... Bxg2 24. Rg1 $15) 24. Bxc4 Bd5
({Inferior is} 24... Bxg2 25. O-O-O+ Kc7 26. Bxe6 $11) 25. Rd1 (25. Bxd5 $142
exd5 26. O-O-O) 25... Qe7 (25... Qg8 $142 26. Qxg8 Rhxg8 27. Bxd5 exd5) 26. Qg6
(26. Qxe7+ $142 Kxe7 27. Bxd5 exd5 28. Rxd5) 26... Ne5 27. Qg3 (27. Qe4 Nxc4
28. Qxc4) 27... Rhg8 28. Qb3 Nxc4 29. Qxc4 Qc7 30. Qf4+ Kd7 31. Rxd5+ exd5 32.
Qf5+ Ke7 {Strongly threatening ...Qc1+.} 33. O-O {Threatens to win with Re1+.}
Rg7 34. Qxd5 {And now Re1+ would win.} Re8 35. Qxh5 {aiming for Re1+.} Qe5 36.
Qh6 $2 (36. Qf3 {is a better defense.}) 36... Kf7 37. h3 (37. Qd2 $142) 37...
Qd5 {[%csl Gg7][%CAl Rd5g2]} 38. g3 Qg5 39. Qxg5 Rxg5 40. Rd1 Rge5 {Hoping for
...Re1+.} 41. Rd3 a5 42. Kg2 axb4 43. axb4 Rb5 44. Rd4 Reb8 45. h4 Rxb4 46. Rd6
Rb2 47. Rd7+ Kg6 48. Rd4 Rc8 49. Rf4 f5 50. Rd4 Rcc2 51. Rf4 Re2 52. Rf3 Rb4
53. Kf1 Re6 54. Kg2 Ree4 55. Kh3 Kf6 56. Rd3 Ke5 57. Rf3 Re1 58. Kg2 f4 59. g4
Ke4 60. Ra3 f3+ 61. Kh2 Kf4 62. Ra8 Kxg4 63. Rg8+ Kh5 64. Rh8+ {[#]} Kg6 $1 {
[%CAl Rg6g7] ( -> ...Kg7)} 65. Rg8+ Kh7 {Black mates.} 66. Rg5 Rxh4+ 67. Kg3
Rh6 68. Rf5 Kg7 69. Ra5 Rf6 70. Ra7+ Kg6 71. Ra8 Rg1+ 72. Kh4 Kh7 {[%CAl Rf6h6]
} 73. Ra7+ Rg7 {[%CAl Rf6h6] Weighted Error Value: White=0.56/Black=0.19} 0-1
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "11.4"]
[White "Shuvalova, Polina"]
[Black "Yip, Carissa"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2476"]
[BlackElo "2430"]
[Annotator "Shahid"]
[PlyCount "89"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,52,28,24,77,83,74,68,75,68,93,70,78,76,95,64,68,59,47,26,22,37,52,28,
67,62,64,62,88,15,20,19,48,-11,7,-46,-30,-37,-10,-37,-10,0,-19,16,7,0,0,38,39,
113,116,150,155,0,182]} 1. d4 {[%emt 0:00:00]} g6 {[%emt 0:00:00]} 2. e4 {
[%emt 0:00:39]} Bg7 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:01]} d6 {[%emt 0:00:02]
} 4. Be3 {[%emt 0:00:15]} c6 {[%emt 0:00:09]} 5. Nf3 {[%emt 0:00:32]} Nd7 {
[%emt 0:00:06]} 6. a4 {[%emt 0:00:10]} Qa5 {[%emt 0:00:25]} 7. Qd2 {[%emt 0:00:
06]} Ngf6 {[%emt 0:00:42]} 8. h3 {[%emt 0:00:04]} O-O {[%emt 0:00:19]} 9. Bd3 {
[%emt 0:00:15]} e5 {[%emt 0:00:19]} 10. O-O {[%emt 0:00:10]} Re8 {[%emt 0:00:
12]} 11. Rfe1 {[%emt 0:00:34]} Nf8 {[%emt 0:00:31]} 12. Rab1 {[%emt 0:00:41]}
Qc7 {[%emt 0:00:09]} 13. b4 {[%emt 0:00:37]} Ne6 {[%emt 0:00:19]} 14. dxe5 {
[%emt 0:00:11]} dxe5 {[%emt 0:00:01]} 15. Ne2 {[%emt 0:00:03]} Bd7 {[%emt 0:00:
28]} 16. c3 {[%emt 0:00:36]} Rad8 {[%emt 0:00:14]} 17. Qc2 {[%emt 0:00:13]} c5
{[%emt 0:00:35]} 18. Ng3 {[%emt 0:00:36]} b6 {[%emt 0:01:15]} 19. Red1 {
[%emt 0:01:37]} Bc6 {[%emt 0:00:37]} 20. b5 {[%emt 0:00:13]} Ba8 {[%emt 0:00:
05]} 21. Bc4 {[%emt 0:00:14]} Nf4 {[%emt 0:01:02]} 22. Ng5 {[%emt 0:00:17]}
Rxd1+ {[%emt 0:00:41]} 23. Rxd1 {[%emt 0:00:00]} Rf8 {[%emt 0:00:01]} 24. Qa2 {
[%emt 0:00:24]} Bb7 {[%emt 0:00:25]} 25. a5 {[%emt 0:00:37]} (25. Nxf7 Rxf7 26.
Bxf7+ Qxf7 27. Rd8+ Bf8 28. Qxf7+ Kxf7 29. f3) 25... h6 {[%emt 0:00:37]} 26.
Nxf7 {[%emt 0:00:16]} (26. axb6 axb6 27. Nxf7) 26... Rxf7 {[%emt 0:00:01]} 27.
a6 {[%emt 0:00:36]} Bxe4 {[%emt 0:00:09]} 28. Bxf7+ {[%emt 0:00:44]} Qxf7 {
[%emt 0:00:01]} 29. Rd8+ {[%emt 0:00:02]} Bf8 {[%emt 0:00:02]} 30. Qxf7+ {
[%emt 0:00:01]} Kxf7 {[%emt 0:00:01]} 31. Nxe4 {[%emt 0:00:07]} Nxe4 {[%emt 0:
00:02]} 32. Bxf4 {[%emt 0:00:15]} exf4 {[%emt 0:00:02]} 33. Rd7+ {[%emt 0:00:
01]} Ke6 {[%emt 0:01:26]} 34. Rxa7 {[%emt 0:00:00]} Nd6 {[%emt 0:00:01]} 35.
Ra8 {[%emt 0:00:53]} Nxb5 {[%emt 0:00:48]} 36. Rxf8 {[%emt 0:00:05]} Kd5 {
[%emt 0:00:16]} 37. Rxf4 {[%emt 0:00:26]} Kc6 {[%emt 0:00:16]} 38. Rf6+ {
[%emt 0:00:23]} Kc7 {[%emt 0:00:02]} 39. c4 {[%emt 0:00:04]} Nd4 {[%emt 0:00:
13]} 40. Rxg6 {[%emt 0:00:07]} b5 {[%emt 0:00:03]} 41. cxb5 {[%emt 0:00:05]}
Nxb5 {[%emt 0:00:02]} 42. Rxh6 {[%emt 0:00:01]} c4 {[%emt 0:00:02]} 43. Rh4 {
[%emt 0:00:03]} c3 {[%emt 0:00:01]} 44. Rc4+ {[%emt 0:00:06]} Kb6 {[%emt 0:00:
06]} 45. h4 {[%emt 0:00:01]} 1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "11.5"]
[White "Bjerre, Jonas Buhl"]
[Black "Lei, Tingjie"]
[Result "1-0"]
[ECO "E04"]
[WhiteElo "2550"]
[BlackElo "2505"]
[Annotator "Shahid"]
[PlyCount "135"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,135,24,24,29,-10,-10,6,6,-23,-14,-21,-8,-12,14,7,9,4,-3,4,-4,-1,-3,-4,
25,26,27,19,19,7,-7,9,71,67,72,74,74,80,61,79,108,77,79,84,79,85,79,87,100,97,
125,119,117,111,115,127,119,112,131,111,129,115,139,130,129,125,126,105,118,73,
129,129,162,164,167,154,161,134,155,92,135,146,186,186,225,219,240,248,253,247,
259,248,262,283,307,316,309,296,297,318,318,304,340,355,381,394,437,426,436,
374,370,385,433,414,507,506,529,571,644,633,679,552,569,494,561,603,625,689,
691,729,782,670,1225,797,797,1044,1272,1515]} 1. d4 {[%emt 0:00:00]} Nf6 {
[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:00:
00]} d5 {[%emt 0:00:00]} 4. g3 {[%emt 0:00:00]} dxc4 {[%emt 0:00:11]} 5. Bg2 {
[%emt 0:00:05]} Nc6 {[%emt 0:00:03]} 6. Qa4 {[%emt 0:00:33]} Bb4+ {[%emt 0:00:
04]} 7. Bd2 {[%emt 0:00:39]} Nd5 {[%emt 0:00:04]} 8. Bxb4 {[%emt 0:00:42]}
Ndxb4 {[%emt 0:00:03]} 9. Ne5 {[%emt 0:00:17]} O-O {[%emt 0:02:13]} 10. Nxc6 {
[%emt 0:00:06]} Nxc6 {[%emt 0:00:04]} 11. e3 {[%emt 0:00:03]} b5 {[%emt 0:01:
20]} 12. Qxb5 {[%emt 0:00:57]} Rb8 {[%emt 0:00:02]} 13. Qa4 {[%emt 0:01:41]} (
13. Qxc6 $2 Bb7 14. Qxc4 Bxg2) 13... Nb4 {[%emt 0:00:03]} 14. O-O {[%emt 0:00:
14]} Bd7 {[%emt 0:00:43]} 15. Qd1 {[%emt 0:00:02]} Qe7 {[%emt 0:03:58]} 16. Na3
{[%emt 0:00:59]} Nd3 {[%emt 0:00:50]} 17. Nxc4 {[%emt 0:00:08]} Nxb2 {[%emt 0:
00:02]} 18. Nxb2 {[%emt 0:00:02]} Rxb2 {[%emt 0:00:00]} 19. Qc1 {[%emt 0:00:05]
} Qa3 {[%emt 0:00:06]} 20. Qxc7 {[%emt 0:00:58]} Bb5 {[%emt 0:00:03]} 21. Rfb1
{[%emt 0:00:21]} Bd3 {[%emt 0:00:15]} 22. Rxb2 {[%emt 0:00:37]} Qxb2 {[%emt 0:
00:05]} 23. Qc1 {[%emt 0:00:10]} Qb4 {[%emt 0:00:46]} 24. Qd1 {[%emt 0:00:23]}
Qa3 {[%emt 0:00:29]} 25. Qb3 {[%emt 0:00:44]} Qxb3 {[%emt 0:00:02]} 26. axb3 {
[%emt 0:00:02]} Rc8 {[%emt 0:00:27]} 27. d5 {[%emt 0:01:08]} exd5 {[%emt 0:00:
05]} 28. Bxd5 {[%emt 0:00:03]} Rc7 {[%emt 0:00:04]} 29. e4 {[%emt 0:00:25]} g5
{[%emt 0:00:13]} 30. f3 {[%emt 0:00:22]} Kg7 {[%emt 0:00:02]} 31. Kf2 {[%emt 0:
00:03]} a6 {[%emt 0:00:02]} 32. Ke3 {[%emt 0:00:04]} Bb5 {[%emt 0:00:02]} 33.
Kd4 {[%emt 0:00:19]} Rc2 {[%emt 0:00:03]} 34. h4 {[%emt 0:00:07]} gxh4 {
[%emt 0:00:05]} 35. gxh4 {[%emt 0:00:03]} Rh2 {[%emt 0:00:08]} 36. Rg1+ {
[%emt 0:00:12]} Kf8 {[%emt 0:00:01]} 37. Rg4 {[%emt 0:00:05]} Be8 {[%emt 0:00:
16]} 38. e5 {[%emt 0:00:13]} Ke7 {[%emt 0:00:04]} 39. Bc4 {[%emt 0:00:09]} a5 {
[%emt 0:00:04]} 40. Rf4 {[%emt 0:00:07]} Rf2 {[%emt 0:00:07]} 41. Kc5 {[%emt 0:
00:04]} Rc2 {[%emt 0:00:06]} 42. Kb6 {[%emt 0:00:05]} Rc1 {[%emt 0:00:06]} 43.
Kxa5 {[%emt 0:00:03]} Re1 {[%emt 0:00:01]} 44. Rf5 {[%emt 0:00:06]} Rh1 {
[%emt 0:00:03]} 45. h5 {[%emt 0:00:02]} Rb1 {[%emt 0:00:10]} 46. Kb4 {[%emt 0:
00:03]} Rb2 {[%emt 0:00:01]} 47. Kc5 {[%emt 0:00:04]} Rc2 {[%emt 0:00:03]} 48.
h6 {[%emt 0:00:06]} Kd8 {[%emt 0:00:02]} 49. Kb4 {[%emt 0:00:04]} Ke7 {[%emt 0:
00:02]} 50. f4 {[%emt 0:00:02]} Rf2 {[%emt 0:00:08]} 51. Rf6 {[%emt 0:00:02]}
Rf3 {[%emt 0:00:02]} 52. Kc5 {[%emt 0:00:03]} Rc3 {[%emt 0:00:02]} 53. Kd4 {
[%emt 0:00:02]} Rc1 {[%emt 0:00:02]} 54. Bd3 {[%emt 0:00:05]} Rd1 {[%emt 0:00:
05]} 55. Kc3 {[%emt 0:00:02]} Rh1 {[%emt 0:00:11]} 56. Bxh7 {[%emt 0:00:04]}
Bd7 {[%emt 0:00:02]} 57. Be4 {[%emt 0:00:06]} Rh3+ {[%emt 0:00:02]} 58. Kd4 {
[%emt 0:00:09]} Be6 {[%emt 0:00:09]} 59. b4 {[%emt 0:00:03]} Rb3 {[%emt 0:00:
03]} 60. Kc5 {[%emt 0:00:07]} Rc3+ {[%emt 0:00:01]} 61. Kb5 {[%emt 0:00:12]}
Bd7+ {[%emt 0:00:19]} 62. Kb6 {[%emt 0:00:03]} Be6 {[%emt 0:00:06]} 63. h7 {
[%emt 0:00:03]} Rh3 {[%emt 0:00:01]} 64. b5 {[%emt 0:00:06]} Kf8 {[%emt 0:00:
03]} 65. f5 {[%emt 0:00:07]} Bd7 {[%emt 0:00:06]} 66. e6 {[%emt 0:00:07]} Be8 {
[%emt 0:00:02]} 67. exf7 {[%emt 0:00:02]} Bd7 {[%emt 0:00:04]} 68. Rd6 {
[%emt 0:00:04]} 1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "11.6"]
[White "Gukesh D"]
[Black "Badelka, Olga"]
[Result "1-0"]
[ECO "E04"]
[WhiteElo "2578"]
[BlackElo "2433"]
[Annotator "TA"]
[PlyCount "135"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 14,135,8,0,10,0,0,-14,-12,-17,-12,-11,-11,-11,-15,-17,-18,-107,-40,-30,
-32,-31,-40,-29,33,0,35,0,0,0,0,0,0,0,0,0,0,-22,216,212,201,212,205,197,197,
197,212,212,212,212,259,259,292,268,294,273,290,248,229,226,229,229,211,191,
281,258,510,428,646,425,420,401,411,235,29988,806,29989,393,754,393,5043,645,
582,395,364,243,250,242,240,168,214,208,193,175,189,178,324,319,288,249,397,
290,462,655,479,479,5122,140,383,345,432,289,454,446,460,443,29983,29984,29984,
29985,29985,29986,29986,29987]} 1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. g3 dxc4 5. Bg2
c6 6. O-O b5 7. Ne5 Bb7 8. Nc3 a6 {E04: Open Catalan: 5 Nf3.} 9. b3 cxb3 10.
Qxb3 $5 {[%mdl 4] Leaves trodden paths.} Qxd4 {The position is equal.} 11. Bf4
Be7 {[#]} 12. Rfd1 $146 ({Predecessor:} 12. a4 b4 13. Rac1 Qa7 14. Nc4 c5 15.
Bxb7 Qxb7 16. a5 Nc6 17. Na4 Rd8 18. Rfd1 {0-1 (34) Troff,K (2543)-Nyzhnyk,I
(2622) Las Vegas 2016}) 12... Qb4 13. Qc2 $1 O-O 14. Rab1 Qc5 15. Qd3 (15. a4
$1 $11) 15... Nd5 ({Black should try} 15... g5 $1 $17 16. Na4 bxa4 17. Rxb7
gxf4 18. gxf4 h5) 16. Nxd5 $1 $15 cxd5 17. Rbc1 Qb6 18. e4 {[%CAl Re4d5]} f6 {
[#]} (18... d4 $11 19. Qxd4 Qxd4 20. Rxd4 Rd8) 19. Be3 $1 Qd8 (19... d4 {
is more complex.} 20. Bxd4 Qa5 21. Nf3 Nc6 22. Qb3 Nd8) 20. Ng4 {[%CAl Re4d5]}
(20. Qb3 $5 {[%CAl Re4d5]} Kh8 21. exd5 exd5 22. Rxd5 (22. Bxd5 Bxd5 23. Rxd5
Qe8 $11) 22... Bxd5 23. Qxd5 Qxd5 24. Bxd5 $14) 20... Nc6 21. exd5 Nb4 {
[%mdl 64] Double Attack} 22. Qe2 Nxd5 {aiming for ...Qd7.} (22... Bxd5 $6 23.
a3 $16) 23. Bc5 Bxc5 (23... Kf7 24. Re1 Qd7) 24. Qxe6+ Kh8 {Threatens to win
with ...Re8.} 25. Bxd5 Bc8 $2 (25... Bxd5 $11 26. Rxd5 Qe7 (26... Qb6) 27. Qxe7
Bxe7) 26. Qe2 $18 Bxg4 27. Qxg4 Rc8 {...Bxf2+! is the strong threat.} 28. Be6
$1 {[%csl Bc8,Bd8][%mdl 64] Discovered Attack} Bxf2+ 29. Kxf2 Qb6+ 30. Kg2 Rxc1
31. Rxc1 Qe3 32. Rc2 Re8 33. Bd7 Rf8 34. Qf3 Qd4 35. Bf5 g6 36. Bd3 Rd8 37. Bf1
Qe5 38. Re2 Qd4 (38... Qd5 $142 39. Rc2 Rd6 40. Qxd5 Rxd5) 39. h4 Rf8 $2 (39...
Qd6 40. Kh2 Kg7) 40. Qb7 Qa4 (40... Rd8 $142 41. Qxa6 g5 42. hxg5 Qd5+ 43. Kh2
Qxg5) 41. Qe7 {[%CAl Re7f8]} Kg8 42. Kh2 {Black must now prevent Bh3.} Qd4 43.
Bh3 (43. Qe6+ $142 Rf7 44. Bg2) 43... Rd8 $2 (43... f5 $18 44. Qe6+ Kg7 45.
Qxa6 f4 46. Qb7+ (46. Qxb5 $2 fxg3+ {[%mdl 64] Discovered Attack} 47. Kxg3 Qf4+
48. Kg2 Qf1+ 49. Kh2 Rf2+ 50. Rxf2 Qxb5 $19) 46... Rf7) 44. Be6+ Kh8 45. Bb3 $2
(45. h5 {mates} Rb8 46. h6 Qh4+ 47. gxh4 Rg8 48. Bxg8 Kxg8 49. Qg7#) 45... a5
$2 (45... Qd6 46. Qf7 Rf8) 46. a3 b4 $2 (46... Qd6 47. Qa7 Qd7 48. Qxa5 Qd3)
47. a4 (47. Qf7 $142 g5 48. Bc2) 47... Qd6 {If only Black now had time for ...
Qxe7....} 48. Qf7 {White threatens Re7 and mate.} Rf8 49. Qe6 ({Weaker is} 49.
Re8 Rxe8 50. Qxe8+ Kg7 $18) 49... Rd8 {If Black can now play ...Qxe6 this
consolidates a bit.} 50. Qxd6 Rxd6 {[%mdl 4096] Endgame KRB-KR} 51. Re3 Rd2+
52. Kh3 Rb2 53. g4 Kg7 54. Kg3 h5 (54... Kf8 $142 55. Rf3 Ke7) 55. gxh5 gxh5
56. Kf3 Kg6 (56... Rh2 {might work better.} 57. Kg3 Rb2) 57. Ke4 Rh2 (57... Rg2
{was worth a try.} 58. Be6 Rg1) 58. Rg3+ Kh6 59. Kf5 Rxh4 (59... Rf2+ $142 60.
Ke6 Rf4) 60. Kxf6 $2 (60. Be6 $18 b3 61. Kxf6) 60... Rf4+ {A mistake that
costs the game.} (60... Rg4 $16 61. Rh3 Rf4+ 62. Ke5 Rf1) 61. Ke5 Rf2 62. Bd5
h4 (62... Rf8 {keeps fighting.} 63. Bb3 Rf2) 63. Rg8 Kh7 64. Rg4 Rh2 (64... h3
$18 65. Rh4+ Kg6 66. Rxh3 Rf5+ 67. Kd4 Rf1) 65. Be4+ {White mates.} Kh6 66. Kf6
Rf2+ {[#]} 67. Bf5 $1 {[%CAl Rg4h4]} Kh5 68. Rg8 {[%CAl Rg8h8] Weighted Error
Value: White=0.76/ Black=0.62} 1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "11.7"]
[White "Keymer, Vincent"]
[Black "Nihal Sarin"]
[Result "1/2-1/2"]
[ECO "D36"]
[WhiteElo "2591"]
[BlackElo "2620"]
[Annotator "Shahid"]
[PlyCount "98"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 23,98,50,54,47,41,49,78,22,92,83,49,94,199,210,209,198,189,169,162,177,
235,97,94,79,50,70,591,77,62,-91,-94,-191,0,0,0,-184,-12,-75,-72,-116,-117,
-203,-201,-201,-184,-207,0,0,0,0,0,0,0,-7,0,0,0,3,62,62,61,59,154,147,146,137,
135,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. Bg5 Nbd7 6.
cxd5 exd5 7. Qc2 Be7 8. e3 O-O 9. Bd3 Re8 10. h3 Nf8 11. O-O Ng6 12. Ne5 Nd7
13. Bxe7 {D36: Queen's Gambit Declined: Exchange Variation: Main line (5 Bg5
c6 6 Qc2).} Qxe7 14. f4 Ngf8 {[%CAl Bg6f8,Bf8e6,Be6f4][%mdl 32]} 15. e4 {[#]} (
15. Rae1 $16) 15... Qb4 $146 (15... dxe4 $11 {keeps the balance.} 16. Bc4 (16.
Nxe4 Nf6 $11) 16... Nxe5 17. fxe5 Be6 18. Nxe4 Qh4) ({Predecessor:} 15... Nf6
16. exd5 Nxd5 17. Nxd5 cxd5 18. Rae1 Qd8 19. f5 f6 20. Nf3 Bd7 21. Qb3 Bc6 22.
Rxe8 Qxe8 23. Re1 Qd7 24. Qa3 Kf7 25. b4 {1/2-1/2 (25) Kononenko,T (2305)
-Shadrina,T (2401) Vladimir 2004}) 16. Nf3 $16 (16. exd5 $6 Qxd4+ 17. Kh1 Nxe5
$11) 16... dxe4 17. Nxe4 h6 (17... Nb6 $16) 18. Rae1 $18 Ne6 19. a3 Qf8 20. f5
Nf4 21. Bc4 Nb6 (21... Nd5 {might work better.} 22. Qb3 N7b6) 22. Ba2 (22. Ne5
$18 {has better winning chances.} Nxc4 23. Qxc4) 22... Bxf5 $16 {[#]} 23. Nf6+
gxf6 24. Qxf5 {[%mdl 64] Double Attack} Qd6 {[%mdl 8192] [#]} (24... Nbd5 $14)
25. Rxe8+ $2 (25. Bxf7+ $1 $18 {[%mdl 512] is the precise move to win.} Kxf7
26. Ne5+ Rxe5 (26... Kg8 27. Qg4+ Kh7 28. Rxf4) 27. dxe5 Qd4+ 28. Kh1) 25...
Rxe8 26. Qg4+ $2 (26. Kh1 $1 $14 {stays ahead.}) 26... Kf8 $17 27. Qh4 (27. Kh1
$17 Ne2 28. Ne5 Qxd4 29. Qxd4 Nxd4 30. Ng4) 27... Kg7 (27... Ne2+ 28. Kf2 f5)
28. Qg4+ Kf8 {...h5 is the strong threat.} 29. Qh4 f5 $2 (29... Ne2+ $19 30.
Kf2 f5) 30. Kh1 (30. Ne5 $11 Qxd4+ {[%mdl 64] Double Attack} 31. Kh2 Qxe5 32.
Qxh6+ Ke7 33. Qg5+ f6 34. Qxf4) 30... Re4 $1 {aiming for ...Ne2.} 31. Ne5 Ne2 (
{But not} 31... Rxd4 $2 32. Nxf7 Nxg2 33. Qh5 $18 (33. Kxg2 Rd2+ 34. Rf2 Rxf2+
35. Qxf2 Qf6 $18)) 32. Qf2 (32. g4 $17) 32... Qxd4 $19 ({Don't do} 32... Nxd4
33. Nxf7 Qf6 34. Re1 $15) 33. Nxf7 Qxf2 34. Rxf2 Ng3+ $2 (34... Nc1 $19 35.
Rxf5 (35. Nd6 Re1+) 35... Re1+ 36. Kh2 Nxa2 37. Nd8+ (37. Nxh6+ Kg7) 37... Ke7
38. Nxb7 Nd5) 35. Kh2 $11 f4 36. Nxh6 Nd5 37. Bxd5 cxd5 {[%mdl 4096] Endgame
KRN-KRN} 38. Ng4 Ke7 39. Rf3 d4 40. h4 Ke6 (40... Ne2 $11) 41. Nf2 $14 Re3 42.
Rxf4 d3 {[#]} ({Black should try} 42... Nf5 $14) 43. Ng4 $1 $16 {[%CAl Rg4e3]}
Ne2 44. Rf6+ Ke7 {[#] Hoping for ...Rg3.} 45. Rf1 (45. Rf7+ $3 $16 {[%mdl 512]}
Kxf7 46. Nxe3) (45. Nxe3 Kxf6 46. Nf1) 45... Re4 $11 {The position is equal.}
46. Kh3 Nf4+ (46... d2 $5 47. Rd1 $8 Nf4+ 48. Kh2 Re2 $11) 47. Kh2 Ne2 (47...
d2 $5 48. Rd1 $8 Re2 $11) 48. Kh3 Nf4+ (48... d2 $5 49. Rd1 $8 Nf4+ 50. Kh2 Re2
$11) 49. Kh2 Ne2 {A wild game. Weighted Error Value: White=0.44/Black=0.54}
1/2-1/2
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "11.8"]
[White "Mendonca, Leon Luke"]
[Black "Mammadzada, Gunay"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "2549"]
[BlackElo "2443"]
[Annotator "Shahid"]
[PlyCount "51"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,51,32,22,27,6,33,31,34,31,12,15,44,14,12,14,0,-3,-5,3,3,-43,-4,26,30,
30,30,31,40,44,31,23,31,-24,-3,-2,-2,-2,4,4,0,-85,-85,184,184,184,185,185,186,
186,218,210,418,332]} 1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2. c4 {
[%emt 0:00:05]} c6 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:00:06]} Nf6 {[%emt 0:00:00]
} 4. e3 {[%emt 0:00:45]} Bf5 {[%emt 0:00:04]} 5. Nc3 {[%emt 0:00:03]} a6 {
[%emt 0:00:03]} 6. Ne5 {[%emt 0:01:54]} Nbd7 {[%emt 0:00:03]} 7. Qb3 {[%emt 0:
00:05]} Qc7 {[%emt 0:00:03]} 8. cxd5 {[%emt 0:00:25]} Nxe5 {[%emt 0:00:05]} 9.
dxe5 {[%emt 0:00:01]} Nxd5 {[%emt 0:00:01]} 10. Bc4 {[%emt 0:00:09]} e6 {
[%emt 0:00:34]} 11. e4 {[%emt 0:00:09]} Nxc3 {[%emt 0:00:38]} 12. exf5 {
[%emt 0:00:04]} Nd5 {[%emt 0:05:22]} 13. O-O {[%emt 0:00:41]} O-O-O {[%emt 0:
01:04]} 14. Bg5 {[%emt 0:01:01]} Rd7 {[%emt 0:00:21]} 15. fxe6 {[%emt 0:00:35]}
fxe6 {[%emt 0:00:00]} 16. Rac1 {[%emt 0:00:10]} h6 {[%emt 0:00:45]} 17. Be3 {
[%emt 0:01:42]} Qxe5 {[%emt 0:01:11]} 18. Rfe1 {[%emt 0:00:33]} Bd6 {[%emt 0:
00:51]} 19. g3 {[%emt 0:00:07]} Qf5 {[%emt 0:00:09]} 20. Bxa6 {[%emt 0:01:07]}
bxa6 $4 {[%emt 0:00:05]} (20... Nxe3 21. Rxc6+ Kd8 22. Qb6+ Bc7) 21. Rxc6+ {
[%emt 0:00:02]} Kd8 {[%emt 0:00:06]} 22. Rxd6 {[%emt 0:00:12]} Rxd6 {[%emt 0:
00:08]} 23. Qb8+ {[%emt 0:00:02]} Ke7 {[%emt 0:00:01]} 24. Qxh8 {[%emt 0:00:04]
} Kf7 {[%emt 0:00:05]} 25. Bc5 {[%emt 0:00:40]} Rb6 {[%emt 0:00:25]} (25... Rc6
26. Qf8+ Kg6 27. Qe8+) (25... Rd7 26. Qf8+ Kg6 27. Qe8+ Rf7 28. Qxe6+) 26. Qf8+
{[%emt 0:00:08]} 1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "11.9"]
[White "Abdumalik, Zhansaya"]
[Black "Murzin, Volodar"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "2472"]
[BlackElo "2478"]
[Annotator "Shahid"]
[PlyCount "56"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,56,27,38,77,67,61,40,43,36,42,64,53,13,8,2,11,1,10,7,12,12,12,1,0,-11,
-18,8,2,8,-8,-12,2,-17,-29,-90,-87,-135,-146,-161,-121,-127,-120,-442,-439,
-433,-433,-429,-288,-483,-461,-815,-584,-734,-802,-809,-813,-859,-851]} 1. e4 {
[%emt 0:00:00]} c6 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]}
3. Nd2 {[%emt 0:00:00]} dxe4 {[%emt 0:00:00]} 4. Nxe4 {[%emt 0:00:00]} Bf5 {
[%emt 0:00:03]} 5. Ng3 {[%emt 0:00:00]} Bg6 {[%emt 0:00:01]} 6. Nh3 {[%emt 0:
00:00]} Nf6 {[%emt 0:01:01]} 7. Nf4 {[%emt 0:00:03]} Nbd7 {[%emt 0:01:15]} 8.
c3 {[%emt 0:00:05]} Qc7 {[%emt 0:00:50]} 9. Bc4 {[%emt 0:00:06]} e6 {[%emt 0:
00:42]} 10. O-O {[%emt 0:00:28]} Bd6 {[%emt 0:00:04]} 11. Qf3 {[%emt 0:01:19]}
O-O-O {[%emt 0:00:31]} 12. a4 {[%emt 0:00:15]} Nb6 {[%emt 0:00:13]} 13. Bb3 {
[%emt 0:00:25]} Nbd5 {[%emt 0:00:07]} 14. Nxg6 {[%emt 0:00:40]} hxg6 {[%emt 0:
00:06]} 15. a5 {[%emt 0:00:00]} a6 {[%emt 0:00:30]} 16. c4 {[%emt 0:00:27]} Ne7
{[%emt 0:00:07]} 17. d5 $6 {[%emt 0:02:02]} (17. h3) (17. c5 $2 Bxg3 18. fxg3 (
18. Qxg3 Rxd4) 18... Rxd4) 17... exd5 {[%emt 0:00:22]} 18. cxd5 {[%emt 0:00:01]
} Nexd5 {[%emt 0:00:01]} 19. h3 {[%emt 0:00:15]} Bf4 {[%emt 0:00:26]} 20. Ne4 {
[%emt 0:00:18]} Nxe4 {[%emt 0:01:33]} 21. Bxd5 {[%emt 0:00:30]} Bh2+ {[%emt 0:
01:35]} 22. Kh1 {[%emt 0:00:02]} cxd5 {[%emt 0:00:01]} 23. Be3 {[%emt 0:00:07]}
Kb8 {[%emt 0:00:13]} 24. Rfc1 {[%emt 0:02:01]} Qd6 {[%emt 0:00:06]} 25. Qxf7 {
[%emt 0:00:41]} Rhf8 {[%emt 0:00:24]} 26. Qxg7 {[%emt 0:00:05]} Be5 {[%emt 0:
00:02]} 27. Qh7 {[%emt 0:00:27]} Rh8 {[%emt 0:00:05]} 28. Qf7 {[%emt 0:00:06]}
Rdf8 {[%emt 0:00:02]} 0-1
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "11.10"]
[White "Khademalsharieh, Sarasadat"]
[Black "Abdusattorov, Nodirbek"]
[Result "1/2-1/2"]
[ECO "D41"]
[WhiteElo "2494"]
[BlackElo "2627"]
[Annotator "TA"]
[PlyCount "131"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 26,130,29,0,21,0,18,18,15,0,0,0,0,0,0,0,0,-8,0,-9,-5,-7,-8,-5,-3,-22,
-49,-119,-3,-3,-4,-4,-5,-29,0,0,0,0,0,-1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-7,-8,
-9,-10,-12,0,0,0,0,0,-3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5
Nxd5 6. e4 Nxc3 7. bxc3 cxd4 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 O-O 11. Bc4 Nd7
12. O-O b6 13. Rfe1 Bb7 14. Rad1 Rc8 {D41: Queen's Gambit Declined:
Semi-Tarrasch with 5 cxd5.} 15. Bb3 h6 16. Re3 Re8 17. h3 Nf6 {[#]} 18. Rde1
$146 ({Predecessor:} 18. Qe2 Rc7 19. d5 exd5 20. e5 Nh5 21. Rd4 g6 22. Qd2 Qe7
23. Nh2 Qc5 24. Re1 {1-0 (39) Goryachkina,A (2579)-Ju,W (2583) Lausanne 2020})
18... Qc7 19. a4 Red8 20. Qb2 Qe7 21. Qd2 a5 22. d5 exd5 23. exd5 Qb4 24. Qxb4
axb4 25. Rd1 Bxd5 26. Bxd5 (26. Red3 $15 Rc3 27. Kh2) 26... Nxd5 (26... Rxd5
$17 27. Rb1 Rdc5) 27. Red3 $11 Rc5 28. Rd4 b3 {[#] ...b2 is the strong threat.}
29. Rb1 (29. Nd2 $5 {[%CAl Rd2b3]}) 29... Re8 30. Rxb3 {The position is equal.}
Re2 31. Rbd3 Nc3 32. Rb4 Ne4 33. Re3 Rxe3 34. fxe3 {[%mdl 4096] Endgame KRN-KRN
} Nc3 35. Rxb6 Nxa4 36. Rb8+ Kh7 37. Rb7 Kg6 38. Ra7 {And now Ra6+ would win.}
Nc3 39. Ra6+ f6 40. Ra7 h5 41. Nh4+ Kh6 42. Nf3 Nd5 43. e4 Nf4 44. Nh4 g6 45.
Ra6 Rc2 46. Rxf6 Kg5 {[%mdl 64] [#] Double Attack} 47. e5 Ne2+ 48. Kh2 $1 Kxh4
{KRN-KR} 49. Rf2 Kg5 {Hoping for ...Nd4.} 50. e6 Rc7 {Threatens to win with ...
Nf4.} 51. Rxe2 {aiming for e7. KR-KR} Kf6 52. Kg3 (52. g3 {looks sharper.} Re7
53. Rf2+ Kg7 54. Re2 Kf6) 52... Re7 53. Kh4 (53. h4 {feels hotter.} Rxe6 54.
Rxe6+ Kxe6 55. Kf4 Kf6 56. Ke4) 53... Rxe6 54. Rxe6+ Kxe6 {KPP-KPP} 55. Kg5 Kf7
56. Kh6 Kf6 57. g4 hxg4 58. hxg4 {KP-KP} g5 59. Kh5 Kf7 60. Kxg5 {White
threatens Kh6 and mate. KP-K} Kg7 61. Kh5 Kh7 62. g5 Kg7 63. g6 Kg8 64. Kh6 {
Intending g7 and mate.} Kh8 65. g7+ Kg8 66. Kg6 {Weighted Error Value: White=0.
04/Black=0.07} 1/2-1/2
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "12.1"]
[White "Zhu, Jiner"]
[Black "Abdusattorov, Nodirbek"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2459"]
[BlackElo "2627"]
[Annotator "TA"]
[PlyCount "58"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 15,58,25,37,43,39,23,27,17,37,37,50,29,79,79,79,68,93,80,75,42,54,53,50,
16,27,17,18,-11,8,0,0,0,0,-650,-72,-75,-69,-842,-831,-29989,-29990,-29991,
-1786,-1716,-1628]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 c5 6. Be3 cxd4
7. Nxd4 Ne7 8. O-O {now scores much better than the old 8.Nd2.} Nbc6 9. Bb5 {
B12: Caro-Kann: Advance Variation.} Bg6 10. c4 a6 11. cxd5 {White has an edge.}
axb5 12. dxc6 bxc6 {[#]} 13. Nc3 $146 ({Predecessor:} 13. Qe2 Nf5 14. Nxc6 Qd7
15. Rc1 Rc8 16. Qf3 Nh4 17. Qg4 Nf5 18. Qf3 Nh4 19. Qg4 Nf5 20. Qf3 Nh4 {
1/2-1/2 (20) Muminova,N (2312)-Yakubboev,N (2004) Tashkent 2013}) 13... Qd7 14.
Rc1 b4 15. Na4 {[#] And now Nb6 would win.} Nd5 16. Nxc6 Rc8 ({But not} 16...
Nxe3 $2 17. Qxd7+ Kxd7 18. Nb6+ Ke8 19. fxe3 $18 (19. Nxa8 Nxf1 20. Kxf1 f6 $18
)) 17. Nd4 Be7 18. Rxc8+ Qxc8 19. Qc1 O-O 20. Nc6 {Hoping for Nb6.} Bh4 {
Strongly threatening ...Qa6.} 21. Qc4 {[#]} Qd7 $1 22. Rc1 (22. Nb6 Nxe3) 22...
Nxe3 23. Qxh4 Qd2 {[%CAl Rd2c1]} 24. Ne7+ (24. Ra1 $1 $11 {keeps the balance.}
Nd5 25. Ne7+ Nxe7 26. Qxe7) 24... Kh8 $17 {[%CAl Rd2c1]} 25. Ra1 Nd1 $40 {
[%CAl Rd2e1][%mdl 1152] Black has strong compensation. Black mounts an attack.}
26. f3 $2 {[%mdl 8192] Loses the game.} ({Don't blunder} 26. Nxg6+ $2 fxg6 27.
f3 g5 $19) (26. h3 $15 Bc2 27. Nb6) 26... Bc2 $19 27. b3 g5 28. Qg3 Qe3+ (28...
Qd4+ $142 29. Kh1 Qxa1 30. Kg1 Qd4+ 31. Kh1 Nf2+ 32. Qxf2 Qxf2 33. h4 Bd3 34.
h5 Bf1 35. Ng6+ fxg6 36. hxg6 Qxg2#) 29. Kh1 Nf2+ {Weighted Error Value:
White=1.06/ Black=0.34} 0-1
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "12.2"]
[White "Murzin, Volodar"]
[Black "Khademalsharieh, Sarasadat"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "2478"]
[BlackElo "2494"]
[Annotator "ChessBase"]
[PlyCount "101"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,88,27,38,38,38,17,26,8,7,12,12,7,23,12,10,43,30,47,8,8,12,29,28,30,26,
24,43,39,52,40,36,14,-5,-17,-4,0,-6,-3,-13,-13,-9,-9,-10,-10,-2,0,0,34,-11,27,
0,27,0,29,45,56,38,91,60,84,85,42,46,138,138,172,172,175,150,174,162,171,134,
146,137,150,150,164,150,158,134,251,274,315,328,363,350,394,405,411]} 1. e4 {
[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} Nc6 {[%emt 0:00:00]
} 3. Bb5 {[%emt 0:00:00]} a6 {[%emt 0:00:00]} 4. Ba4 {[%emt 0:00:01]} Nf6 {
[%emt 0:00:00]} 5. O-O {[%emt 0:00:01]} b5 {[%emt 0:00:00]} 6. Bb3 {[%emt 0:00:
03]} Bc5 {[%emt 0:00:01]} 7. c3 {[%emt 0:00:02]} d6 {[%emt 0:00:01]} 8. d4 {
[%emt 0:00:02]} Bb6 {[%emt 0:00:02]} 9. Be3 {[%emt 0:00:02]} Bg4 {[%emt 0:00:
36]} 10. Nbd2 {[%emt 0:00:03]} O-O {[%emt 0:00:37]} 11. h3 {[%emt 0:00:06]} Bh5
{[%emt 0:00:37]} 12. dxe5 {[%emt 0:00:05]} Nxe5 {[%emt 0:00:39]} 13. Bxb6 {
[%emt 0:00:03]} cxb6 {[%emt 0:00:04]} 14. g4 {[%emt 0:00:03]} Bg6 {[%emt 0:00:
14]} 15. Nd4 {[%emt 0:00:06]} Nxe4 {[%emt 0:01:36]} 16. f4 {[%emt 0:00:10]} Qh4
{[%emt 0:00:12]} 17. Nxe4 {[%emt 0:00:06]} Bxe4 {[%emt 0:00:03]} 18. Qe1 {
[%emt 0:00:01]} Qxh3 {[%emt 0:01:49]} 19. Qxe4 {[%emt 0:00:03]} Nxg4 {[%emt 0:
00:01]} 20. Qg2 {[%emt 0:00:02]} Qxg2+ {[%emt 0:00:03]} 21. Kxg2 {[%emt 0:00:
00]} Ne3+ {[%emt 0:00:01]} 22. Kf3 {[%emt 0:00:01]} Nxf1 {[%emt 0:00:01]} 23.
Rxf1 {[%emt 0:00:00]} g6 {[%emt 0:00:16]} 24. Rd1 {[%emt 0:00:07]} Rad8 {
[%emt 0:00:09]} 25. Nc6 {[%emt 0:00:24]} Rd7 {[%emt 0:00:03]} 26. Nb4 {[%emt 0:
00:03]} a5 {[%emt 0:00:58]} 27. Nd5 {[%emt 0:00:02]} Rb7 {[%emt 0:00:03]} 28.
f5 {[%emt 0:00:47]} gxf5 {[%emt 0:00:17]} 29. Bc2 {[%emt 0:00:33]} Rc8 {
[%emt 0:01:07]} 30. Bxf5 {[%emt 0:00:06]} Rc5 {[%emt 0:00:03]} 31. Be4 {
[%emt 0:00:20]} Rb8 {[%emt 0:00:04]} 32. Nf6+ {[%emt 0:00:03]} Kg7 {[%emt 0:00:
08]} 33. Nd7 {[%emt 0:00:04]} Rd8 {[%emt 0:00:02]} 34. Rg1+ {[%emt 0:00:34]}
Kh8 {[%emt 0:00:08]} 35. Nxc5 {[%emt 0:00:07]} dxc5 {[%emt 0:00:09]} 36. Ke3 {
[%emt 0:00:25]} Rd6 {[%emt 0:00:02]} 37. Rg2 {[%emt 0:00:21]} h6 {[%emt 0:00:
11]} 38. Kf4 {[%emt 0:01:14]} Rd1 {[%emt 0:00:57]} 39. Ke5 {[%emt 0:00:13]} Re1
{[%emt 0:00:02]} 40. Kd5 {[%emt 0:00:09]} Rf1 {[%emt 0:00:40]} 41. Kc6 {
[%emt 0:00:16]} f5 {[%emt 0:00:41]} 42. Bd3 {[%emt 0:00:03]} Ra1 {[%emt 0:00:
05]} 43. Bxf5 {[%emt 0:00:44]} Rxa2 {[%emt 0:00:04]} 44. Kxb5 {[%emt 0:00:03]}
a4 {[%emt 0:00:02]} 45. Be6 {[%emt 0:00:02]} Ra1 {[%emt 0:00:08]} 46. Kxb6 {
[%emt 0:00:01]} Re1 {[%emt 0:00:05]} 47. Bd5 {[%emt 0:00:11]} Rc1 {[%emt 0:00:
24]} 48. Kxc5 {[%emt 0:00:21]} a3 {[%emt 0:00:01]} 49. Kb4 {[%emt 0:00:15]}
axb2 {[%emt 0:00:07]} 50. Rxb2 {[%emt 0:00:02]} Kg7 {[%emt 0:00:06]} 51. c4 {
[%emt 0:00:07]} 1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "12.3"]
[White "Mammadzada, Gunay"]
[Black "Abdumalik, Zhansaya"]
[Result "1-0"]
[ECO "C89"]
[WhiteElo "2443"]
[BlackElo "2472"]
[Annotator "Shahid"]
[PlyCount "103"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,103,27,38,38,38,26,22,16,-5,4,-46,19,-26,-1,-9,5,-27,30,30,30,36,27,
27,16,-3,1,8,17,-41,-3,19,42,36,33,27,34,31,65,60,58,56,41,42,59,28,85,62,90,
103,140,151,151,162,228,106,118,9,155,120,123,117,117,119,122,126,126,126,145,
126,171,84,224,208,239,239,266,274,275,286,275,281,283,302,312,312,383,384,413,
417,609,613,768,781,867,584,759,917,1036,1104,1152,1287,1215,1479,1739,1025]}
1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} Nc6 {
[%emt 0:00:00]} 3. Bb5 {[%emt 0:00:00]} a6 {[%emt 0:00:00]} 4. Ba4 {[%emt 0:00:
00]} Nf6 {[%emt 0:00:00]} 5. O-O {[%emt 0:00:03]} Be7 {[%emt 0:00:00]} 6. Re1 {
[%emt 0:00:01]} b5 {[%emt 0:00:00]} 7. Bb3 {[%emt 0:00:02]} O-O {[%emt 0:00:01]
} 8. c3 {[%emt 0:00:10]} d5 {[%emt 0:00:28]} 9. exd5 {[%emt 0:00:04]} Nxd5 {
[%emt 0:00:01]} 10. Nxe5 {[%emt 0:00:01]} Nxe5 {[%emt 0:00:01]} 11. Rxe5 {
[%emt 0:00:01]} c6 {[%emt 0:00:01]} 12. d3 {[%emt 0:00:01]} Bd6 {[%emt 0:00:10]
} 13. Re1 {[%emt 0:00:02]} Bf5 {[%emt 0:00:00]} 14. Qf3 {[%emt 0:00:05]} Qd7 {
[%emt 0:00:06]} 15. Bxd5 {[%emt 0:01:28]} cxd5 {[%emt 0:00:02]} 16. Bf4 {
[%emt 0:00:04]} Bxf4 {[%emt 0:00:09]} 17. Qxf4 {[%emt 0:00:01]} Bxd3 {[%emt 0:
00:03]} 18. Nd2 {[%emt 0:00:03]} d4 {[%emt 0:00:20]} 19. cxd4 {[%emt 0:01:27]}
Rad8 {[%emt 0:00:02]} 20. Nf3 {[%emt 0:00:07]} Bc4 {[%emt 0:00:06]} 21. b3 {
[%emt 0:01:19]} Bd5 {[%emt 0:00:04]} 22. Rad1 {[%emt 0:00:02]} Qb7 {[%emt 0:00:
21]} 23. Re3 {[%emt 0:00:11]} a5 {[%emt 0:00:29]} 24. Nh4 {[%emt 0:00:18]} Rfe8
$6 {[%emt 0:00:36]} (24... Be6) 25. Nf5 {[%emt 0:00:22]} Rxe3 {[%emt 0:00:03]}
26. fxe3 {[%emt 0:00:45]} g6 {[%emt 0:01:49]} 27. Rc1 {[%emt 0:00:24]} Qd7 {
[%emt 0:00:33]} 28. Qg5 {[%emt 0:01:53]} Re8 {[%emt 0:00:44]} 29. Rf1 {[%emt 0:
00:29]} Qd8 {[%emt 0:01:19]} 30. Qxd8 {[%emt 0:01:19]} Rxd8 {[%emt 0:00:01]}
31. Ne7+ {[%emt 0:00:02]} Kg7 {[%emt 0:00:01]} 32. Nxd5 {[%emt 0:00:04]} Rxd5 {
[%emt 0:00:00]} 33. Rc1 {[%emt 0:00:05]} a4 {[%emt 0:00:05]} 34. b4 {[%emt 0:
00:04]} f5 {[%emt 0:00:14]} 35. Rc5 {[%emt 0:00:42]} Rd7 {[%emt 0:00:07]} 36.
Rxb5 {[%emt 0:00:10]} f4 {[%emt 0:00:01]} 37. Kf2 {[%emt 0:00:02]} fxe3+ {
[%emt 0:00:33]} 38. Kxe3 {[%emt 0:00:00]} Re7+ {[%emt 0:00:00]} 39. Re5 {
[%emt 0:00:01]} Rc7 {[%emt 0:00:01]} 40. Kd3 {[%emt 0:00:19]} Rc1 {[%emt 0:00:
04]} 41. Ra5 {[%emt 0:00:06]} Rd1+ {[%emt 0:00:05]} 42. Kc4 {[%emt 0:00:03]}
Rd2 {[%emt 0:00:03]} 43. Rxa4 {[%emt 0:00:02]} Rxg2 {[%emt 0:00:00]} 44. b5 {
[%emt 0:00:01]} Rxh2 {[%emt 0:00:04]} 45. b6 {[%emt 0:00:05]} Rc2+ {[%emt 0:00:
01]} 46. Kb5 {[%emt 0:00:12]} Rc8 {[%emt 0:00:25]} 47. Rc4 {[%emt 0:00:01]} Rb8
{[%emt 0:00:02]} 48. a4 {[%emt 0:00:03]} h5 {[%emt 0:00:01]} 49. a5 {[%emt 0:
00:01]} h4 {[%emt 0:00:01]} 50. a6 {[%emt 0:00:01]} h3 {[%emt 0:00:00]} 51. a7
{[%emt 0:00:03]} Rh8 {[%emt 0:00:06]} 52. Rc1 {[%emt 0:00:04]} 1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "12.4"]
[White "Nihal Sarin"]
[Black "Mendonca, Leon Luke"]
[Result "1/2-1/2"]
[ECO "A50"]
[WhiteElo "2620"]
[BlackElo "2549"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 9,91,-36,-35,-56,-57,-53,-52,-64,-63,-65,-74,-72,-68,-75,-67,-77,-72,
-72,-68,-79,-69,-67,-59,-66,-46,-76,0,0,52,51,52,75,45,33,33,0,0,-77,0,0,0,0,0,
0,0,0,0,0,7,7,31,0,47,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0]} 1. d4 Nf6 2. c4 c6 3. Bf4 Qb6 4. Nc3 Qxb2 {[#]} 5. Bd2 $146 ({
Predecessor:} 5. Rc1 d6 6. e4 e5 7. Be3 Ng4 8. Bd2 exd4 9. Na4 Qa3 10. Rb1 c5
11. Bc1 Qxa2 {1-0 (48) Agopov,M (2431)-Solozhenkin,E (2457) Helsinki 2014})
5... Qb6 6. Nf3 {A50: Queen's Fianchetto Defence (1 d4 Nf6 2 c4 b6).} d6 7. Rb1
Qc7 8. e4 {Black is slightly better.} e5 9. h3 Nbd7 10. Be2 Be7 11. O-O O-O 12.
Be3 exd4 13. Nxd4 Re8 14. f4 Bf8 15. Qc2 Nc5 {[%CAl Rf6e4]} 16. Bf3 Qe7 {
[%CAl Rf6e4]} (16... g6 {is interesting.} 17. Rfe1 Nfd7 18. Nb3 b6 19. Bf2 Bh6)
17. Rbe1 Nfxe4 (17... Ncxe4 $2 18. Bf2 $18) (17... Nfd7 $17) 18. Nxc6 $1 $11
bxc6 (18... Qd7 $1 $11 19. Nxe4 bxc6) 19. Bxc5 $14 {[%CAl Rf3e4]} dxc5 20. Bxe4
Qd7 21. Bxh7+ Kh8 22. Be4 (22. Rd1 {feels hotter.} Qe7 23. Bd3 Ba6 24. Kh2 Rad8
25. Rfe1) 22... Ba6 23. Qf2 (23. Rd1 $11 {keeps the balance.} Qe6 24. Qa4 Qxc4
25. Qxc4 Bxc4 26. Bxc6 {[%mdl 64] Double Attack}) 23... Qd4 ({Black should play
} 23... f5 $17 24. Rd1 Qe6) 24. Bxc6 $11 Rxe1 25. Rxe1 Rc8 26. Bb5 Bxb5 27.
Nxb5 Qxc4 28. Nxa7 Ra8 {[#] Threatens to win with ...Qa4.} 29. Nc6 Kg8 (29...
Qd5 $5 {[%CAl Rd5c6]} 30. Ne7 Qd4 $14) 30. Re2 Qd5 31. Ne5 c4 {The position is
equal.} 32. Qf3 Qd1+ 33. Kh2 c3 $1 34. Qxa8 Qxe2 35. Qd5 c2 {[#] ...Qxe5! is
the strong threat.} 36. Qxf7+ Kh7 37. Qf5+ Kg8 38. Qe6+ Kh7 39. Qc6 {Strongly
threatening Nf3.} Qd1 40. Qg6+ Kg8 $1 ({But not} 40... Kh8 $2 41. Nf7+ Kg8 42.
Ng5 $18) 41. Qf7+ Kh7 42. Qf5+ Kg8 43. Qe6+ Kh7 44. Qg6+ Kg8 $1 ({Wrong is}
44... Kh8 $2 45. Nf7+ Kg8 46. Ng5 $18) 45. Qe6+ Kh7 46. Qg6+ {Weighted Error
Value: White=0.09/Black=0.08} 1/2-1/2
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "12.5"]
[White "Badelka, Olga"]
[Black "Keymer, Vincent"]
[Result "0-1"]
[ECO "A07"]
[WhiteElo "2433"]
[BlackElo "2591"]
[Annotator "Shahid"]
[PlyCount "86"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,86,27,26,27,-20,19,-5,39,8,44,37,40,41,19,13,34,33,9,7,22,30,36,27,31,
24,21,16,8,-7,3,6,7,3,8,-18,10,-2,-4,-39,-23,-27,-25,-28,-11,-32,-33,-34,-37,
-37,-26,-29,-26,-29,0,0,12,-38,-7,-34,14,0,-14,-18,0,0,0,0,-5,-93,-39,-39,-37,
-99,-91,-77,-77,-213,-200,-214,-209,-578,-570,-626,-653,-660,-667,-667,-675]}
1. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2. g3 {[%emt 0:00:00]} Bg4 {
[%emt 0:00:00]} 3. Bg2 {[%emt 0:00:00]} c6 {[%emt 0:00:00]} 4. h3 {[%emt 0:00:
03]} Bh5 {[%emt 0:00:07]} 5. O-O {[%emt 0:00:02]} Nd7 {[%emt 0:00:04]} 6. d4 {
[%emt 0:00:02]} Ngf6 {[%emt 0:00:06]} 7. c4 {[%emt 0:00:02]} e6 {[%emt 0:00:03]
} 8. cxd5 {[%emt 0:00:05]} exd5 {[%emt 0:00:01]} 9. Nh4 {[%emt 0:00:01]} Bg6 {
[%emt 0:00:19]} 10. Nc3 {[%emt 0:00:11]} Be7 {[%emt 0:00:19]} 11. Nxg6 {
[%emt 0:00:19]} hxg6 {[%emt 0:00:02]} 12. Bf4 {[%emt 0:00:24]} O-O {[%emt 0:00:
12]} 13. Qd2 {[%emt 0:00:29]} Re8 {[%emt 0:00:17]} 14. h4 {[%emt 0:00:11]} Nf8
{[%emt 0:00:07]} 15. Qd3 {[%emt 0:00:47]} a5 {[%emt 0:00:44]} 16. Rad1 {
[%emt 0:00:05]} Bd6 {[%emt 0:00:20]} 17. e3 {[%emt 0:02:20]} Be7 {[%emt 0:01:
00]} 18. Bf3 {[%emt 0:00:16]} Ne6 {[%emt 0:00:09]} 19. Kg2 {[%emt 0:00:10]}
Nxf4+ {[%emt 0:00:50]} 20. exf4 {[%emt 0:00:01]} Qd7 {[%emt 0:00:02]} 21. Rh1 {
[%emt 0:00:25]} Qf5 {[%emt 0:00:05]} 22. h5 {[%emt 0:01:26]} Qxd3 {[%emt 0:00:
21]} 23. Rxd3 {[%emt 0:00:00]} gxh5 {[%emt 0:00:15]} 24. Bxh5 {[%emt 0:00:03]}
g6 {[%emt 0:00:17]} 25. Bd1 {[%emt 0:01:03]} Nd7 {[%emt 0:01:07]} 26. f5 {
[%emt 0:01:07]} Bf6 {[%emt 0:01:05]} 27. fxg6 {[%emt 0:00:02]} fxg6 {[%emt 0:
00:00]} 28. Ne2 {[%emt 0:00:33]} Nf8 {[%emt 0:00:34]} 29. Kf1 {[%emt 0:01:18]}
Ra6 {[%emt 0:00:55]} 30. Rb3 {[%emt 0:00:03]} Re7 {[%emt 0:00:04]} 31. Bc2 {
[%emt 0:00:05]} Kg7 {[%emt 0:00:13]} 32. g4 {[%emt 0:00:13]} a4 {[%emt 0:00:49]
} 33. Rg3 {[%emt 0:00:04]} Rf7 {[%emt 0:01:46]} 34. Re3 {[%emt 0:00:18]} Rb6 {
[%emt 0:00:06]} 35. b3 {[%emt 0:00:04]} axb3 {[%emt 0:00:02]} 36. axb3 $2 {
[%emt 0:00:02]} (36. Bxb3) 36... Rb4 {[%emt 0:00:07]} 37. Rd3 {[%emt 0:00:12]}
Ne6 {[%emt 0:00:28]} 38. g5 {[%emt 0:00:01]} Bxd4 {[%emt 0:00:03]} 39. Nxd4 {
[%emt 0:00:26]} Rxd4 {[%emt 0:00:01]} 40. Rg3 {[%emt 0:00:03]} Rd2 {[%emt 0:00:
03]} 41. Bxg6 {[%emt 0:00:14]} Rfxf2+ {[%emt 0:00:10]} 42. Kg1 {[%emt 0:00:01]}
Rfe2 {[%emt 0:00:05]} 43. Rh7+ {[%emt 0:00:17]} Kxg6 {[%emt 0:00:03]} 0-1
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "12.6"]
[White "Lei, Tingjie"]
[Black "Gukesh D"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2505"]
[BlackElo "2578"]
[Annotator "ChessBase"]
[PlyCount "107"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,74,27,38,51,57,69,70,48,27,27,21,45,12,59,42,49,43,39,42,38,29,43,-13,
13,12,42,17,40,37,23,33,28,39,16,15,27,0,0,18,18,-15,-31,-28,-45,-27,-21,-15,0,
13,12,0,-4,0,39,50,37,-5,54,-32,-43,-51,0,-41,-43,-40,-54,-44,-42,-26,29,-43,
-56,-59,-45,-36,0]} 1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:
00:00]} d6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:00]} 4.
Nxd4 {[%emt 0:00:01]} Nf6 {[%emt 0:00:00]} 5. Nc3 {[%emt 0:00:01]} a6 {[%emt 0:
00:01]} 6. a4 {[%emt 0:00:01]} g6 {[%emt 0:00:18]} 7. Be2 {[%emt 0:00:05]} Bg7
{[%emt 0:00:02]} 8. O-O {[%emt 0:00:03]} O-O {[%emt 0:00:03]} 9. Be3 {[%emt 0:
00:05]} Nc6 {[%emt 0:00:29]} 10. Qd2 {[%emt 0:00:18]} Bd7 {[%emt 0:00:09]} 11.
f4 {[%emt 0:01:52]} Nxd4 {[%emt 0:00:18]} 12. Bxd4 {[%emt 0:00:04]} Bc6 {
[%emt 0:00:01]} 13. Bf3 {[%emt 0:00:03]} Nd7 {[%emt 0:01:15]} 14. Bxg7 {
[%emt 0:00:04]} Kxg7 {[%emt 0:00:02]} 15. a5 {[%emt 0:00:21]} b5 {[%emt 0:00:
58]} 16. e5 {[%emt 0:02:03]} Rc8 {[%emt 0:01:35]} 17. exd6 {[%emt 0:01:51]} Nf6
{[%emt 0:00:12]} 18. Rad1 {[%emt 0:00:49]} Qxd6 {[%emt 0:02:57]} 19. Qxd6 {
[%emt 0:00:46]} exd6 {[%emt 0:00:01]} 20. Rd2 {[%emt 0:00:06]} Rfe8 {[%emt 0:
01:08]} 21. Na2 {[%emt 0:01:33]} Bxf3 {[%emt 0:01:07]} 22. Rxf3 {[%emt 0:00:03]
} Ne4 {[%emt 0:00:37]} 23. Re2 {[%emt 0:00:21]} Ng5 {[%emt 0:00:03]} 24. Rfe3 {
[%emt 0:00:01]} Rxe3 {[%emt 0:00:02]} 25. Rxe3 {[%emt 0:00:01]} Ne6 {[%emt 0:
00:02]} 26. Nb4 {[%emt 0:00:05]} Rc4 {[%emt 0:00:23]} 27. c3 {[%emt 0:00:08]}
Rxf4 {[%emt 0:00:09]} 28. Rd3 {[%emt 0:00:08]} Re4 {[%emt 0:00:14]} 29. Kf2 {
[%emt 0:00:21]} Nc5 {[%emt 0:00:01]} 30. Rd1 {[%emt 0:00:23]} Kf8 {[%emt 0:00:
09]} 31. Kf3 {[%emt 0:00:06]} Re6 {[%emt 0:00:01]} 32. Nd5 {[%emt 0:00:09]} Nb3
{[%emt 0:00:08]} 33. Nc7 {[%emt 0:00:25]} Rf6+ {[%emt 0:00:01]} 34. Ke2 {
[%emt 0:00:05]} Nxa5 {[%emt 0:00:06]} 35. Nxa6 {[%emt 0:00:02]} Nc4 {[%emt 0:
00:02]} 36. b3 {[%emt 0:00:02]} Re6+ {[%emt 0:00:01]} 37. Kf2 {[%emt 0:00:03]}
Na5 {[%emt 0:00:17]} 38. b4 {[%emt 0:00:13]} Nc4 {[%emt 0:00:05]} 39. Nc7 {
[%emt 0:00:15]} Re5 {[%emt 0:00:04]} 40. Rd4 {[%emt 0:00:02]} Rf5+ {[%emt 0:00:
06]} 41. Ke2 {[%emt 0:00:03]} Re5+ {[%emt 0:00:01]} 42. Kf2 {[%emt 0:00:01]}
Ne3 {[%emt 0:00:09]} 43. Rxd6 {[%emt 0:00:20]} Ng4+ {[%emt 0:00:01]} 44. Kg3 {
[%emt 0:00:01]} h5 {[%emt 0:00:03]} 45. Rd3 {[%emt 0:00:01]} Kg7 {[%emt 0:00:
08]} 46. Nd5 {[%emt 0:00:09]} g5 {[%emt 0:00:06]} 47. h3 {[%emt 0:00:02]} Nh6 {
[%emt 0:00:01]} 48. Nc7 {[%emt 0:00:07]} Nf5+ {[%emt 0:00:02]} 49. Kf3 {
[%emt 0:00:01]} Nh4+ {[%emt 0:00:08]} 50. Kf2 {[%emt 0:00:03]} Rf5+ {[%emt 0:
00:07]} 51. Kg1 {[%emt 0:00:04]} Re5 {[%emt 0:00:03]} 52. Kf2 {[%emt 0:00:07]}
Rf5+ {[%emt 0:00:10]} 53. Kg1 {[%emt 0:00:02]} Re5 {[%emt 0:00:05]} 54. Kf2 {
[%emt 0:00:19]} 1/2-1/2
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "12.7"]
[White "Yip, Carissa"]
[Black "Bjerre, Jonas Buhl"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2430"]
[BlackElo "2550"]
[Annotator "Shahid"]
[PlyCount "56"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,56,27,38,57,44,85,69,56,27,33,43,45,42,33,35,38,26,37,23,23,15,31,-17,
-11,-14,-35,-19,-8,-23,-19,-13,0,-26,-26,-11,-8,-106,-58,-121,-121,-121,-100,
-100,-123,-133,-126,-124,-124,-124,-136,-183,-185,-184,-188,-244,-244,-262,
-257]} 1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d6 {
[%emt 0:00:00]} 3. d4 {[%emt 0:00:02]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:
00:00]} Nf6 {[%emt 0:00:00]} 5. Nc3 {[%emt 0:00:01]} a6 {[%emt 0:00:00]} 6. Be3
{[%emt 0:00:01]} e5 {[%emt 0:00:04]} 7. Nf3 {[%emt 0:00:01]} Be7 {[%emt 0:00:
02]} 8. Bc4 {[%emt 0:00:03]} O-O {[%emt 0:00:02]} 9. O-O {[%emt 0:00:03]} Nc6 {
[%emt 0:00:02]} 10. Re1 {[%emt 0:00:13]} Be6 {[%emt 0:00:34]} 11. Bxe6 {
[%emt 0:01:18]} fxe6 {[%emt 0:00:02]} 12. Ng5 {[%emt 0:00:01]} Qd7 {[%emt 0:00:
24]} 13. Na4 {[%emt 0:00:16]} Bd8 {[%emt 0:00:23]} 14. Nb6 {[%emt 0:00:02]}
Bxb6 {[%emt 0:00:04]} 15. Bxb6 {[%emt 0:00:00]} Ne7 {[%emt 0:00:50]} 16. c3 {
[%emt 0:00:15]} h6 {[%emt 0:00:20]} 17. Nf3 {[%emt 0:00:02]} Ng6 {[%emt 0:00:
42]} 18. Be3 $2 {[%emt 0:00:13]} (18. Qb3) 18... Nxe4 {[%emt 0:01:36]} 19. Bxh6
{[%emt 0:01:34]} Nxf2 {[%emt 0:01:14]} 20. Qc2 {[%emt 0:00:05]} e4 {[%emt 0:00:
41]} 21. Kxf2 {[%emt 0:00:12]} d5 {[%emt 0:01:02]} 22. Rxe4 {[%emt 0:00:58]}
dxe4 {[%emt 0:00:13]} 23. Qxe4 {[%emt 0:00:01]} Rf5 {[%emt 0:00:24]} 24. Be3 {
[%emt 0:00:38]} Ne5 {[%emt 0:00:17]} 25. Bd4 {[%emt 0:00:48]} Nxf3 {[%emt 0:00:
18]} 26. gxf3 {[%emt 0:00:00]} Raf8 {[%emt 0:00:15]} 27. Rg1 {[%emt 0:00:02]}
e5 {[%emt 0:00:21]} 28. Be3 {[%emt 0:01:07]} Rxf3+ {[%emt 0:00:23]} 0-1
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "12.8"]
[White "Praggnanandhaa R"]
[Black "Shuvalova, Polina"]
[Result "1-0"]
[ECO "E17"]
[WhiteElo "2608"]
[BlackElo "2476"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 24,77,8,-5,27,27,28,30,39,20,29,35,31,31,22,28,49,54,54,57,46,49,86,52,
52,55,51,54,222,230,218,214,244,245,239,243,240,248,243,209,216,206,340,316,
739,701,716,722,643,493,556,505,1191,1068,1293,1214]} 1. Nf3 Nf6 2. g3 d5 3.
Bg2 e6 4. O-O Be7 5. c4 O-O 6. b3 b6 7. Bb2 Bb7 8. cxd5 Nxd5 9. d4 Nf6 10. Na3
Nbd7 {[%CAl Bb8d7,Bd7c5,Bc5d3][%mdl 32]} 11. Rc1 c5 12. Nc4 Rc8 13. e3 {
13.Re1 is a critical line.} cxd4 {E17: Queen's Indian: 4 g3 Bb7 5 Bg2 Be7.} 14.
Nxd4 Bxg2 15. Kxg2 Nc5 {White has an edge.} 16. Qf3 Nd3 17. Nc6 Rxc6 18. Qxc6 {
[#] Strongly threatening Rcd1.} Nxc1 19. Rxc1 Qd5+ 20. Qxd5 Nxd5 {[#]} 21. Ne5
$146 ({Predecessor:} 21. e4 Nf6 22. Kf3 Rc8 23. Ne5 Rxc1 24. Bxc1 Bc5 25. Be3
Bxe3 26. Kxe3 Kf8 27. Kd4 Ke8 28. b4 {1-0 (50) Abramovic,B (2375)-Konstantinov,
A (2091) Paracin 2019}) 21... Bd6 22. Nc6 a5 23. Bd4 f5 $1 24. f3 Ba3 25. Rc2
Bc5 $2 {[#] A mistake that costs the game.} (25... b5 $14) 26. Bxc5 $18 bxc5
27. Rxc5 {[%mdl 4096] Endgame KRN-KRN} a4 28. bxa4 Nxe3+ 29. Kf2 Nd5 30. a5 Ra8
31. Ke2 Kf7 32. Kd3 Ra6 (32... Ke8 $142 33. Kc4 Kd7 34. Ne5+ Kd6) 33. Kc4 Kf6
$2 (33... Ra8 34. Rb5 g5) 34. Nb4 {White is clearly winning.} Nxb4 35. Kxb4 Ra8
36. f4 Rb8+ 37. Rb5 Rd8 (37... Ra8 $142 38. Rb6 Ke7) 38. a6 Rd2 39. a4 {
Weighted Error Value: White=0.19/Black=0.27} 1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "12.9"]
[White "Salimova, Nurgyul"]
[Black "Yoo, Christopher Woojin"]
[Result "1/2-1/2"]
[ECO "E06"]
[WhiteElo "2397"]
[BlackElo "2455"]
[Annotator "Shahid"]
[PlyCount "78"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,78,27,27,27,27,26,7,7,-24,-7,12,16,3,-4,1,12,21,12,24,12,17,27,25,76,
37,85,60,86,97,102,102,105,105,105,-31,130,192,195,157,253,266,422,364,408,293,
314,292,322,318,381,262,324,345,345,261,265,248,272,112,124,75,98,92,80,87,90,
88,52,66,42,0,0,0,0,0,0,0,0,0,0]} 1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]}
2. Nf3 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. c4 {[%emt 0:00:10]} d5 {[%emt 0:
00:02]} 4. g3 {[%emt 0:00:03]} Be7 {[%emt 0:00:04]} 5. Bg2 {[%emt 0:00:02]} O-O
{[%emt 0:00:01]} 6. Nc3 {[%emt 0:00:01]} dxc4 {[%emt 0:01:19]} 7. Ne5 {[%emt 0:
00:03]} c5 {[%emt 0:00:17]} 8. dxc5 {[%emt 0:00:21]} Qc7 {[%emt 0:01:14]} 9.
Nxc4 {[%emt 0:00:22]} Qxc5 {[%emt 0:00:11]} 10. Qb3 {[%emt 0:02:10]} Nc6 {
[%emt 0:00:46]} 11. Be3 {[%emt 0:00:18]} Qh5 {[%emt 0:00:06]} 12. h3 {[%emt 0:
00:29]} e5 {[%emt 0:01:29]} 13. g4 {[%emt 0:00:14]} Qh4 {[%emt 0:00:04]} 14.
Nd2 {[%emt 0:01:47]} Nd4 $2 {[%emt 0:00:46]} (14... Nd7) 15. Bxd4 {[%emt 0:00:
28]} exd4 {[%emt 0:00:06]} 16. Nf3 {[%emt 0:00:04]} Qh6 {[%emt 0:00:18]} 17. g5
{[%emt 0:00:20]} Qg6 {[%emt 0:00:12]} 18. gxf6 {[%emt 0:00:29]} Be6 {[%emt 0:
00:18]} 19. Nd5 {[%emt 0:01:49]} Bd6 {[%emt 0:01:20]} 20. Kf1 {[%emt 0:00:29]}
Qe4 {[%emt 0:01:11]} 21. Nd2 {[%emt 0:01:04]} Qh4 {[%emt 0:00:16]} 22. Qf3 {
[%emt 0:00:11]} g6 {[%emt 0:00:33]} 23. Rd1 {[%emt 0:00:22]} Kh8 {[%emt 0:00:
14]} 24. Qe4 {[%emt 0:00:12]} Qh5 {[%emt 0:00:38]} 25. Nf4 {[%emt 0:00:17]}
Bxf4 {[%emt 0:00:14]} 26. Qxf4 {[%emt 0:00:00]} d3 {[%emt 0:00:11]} 27. Qf3 {
[%emt 0:00:14]} dxe2+ {[%emt 0:00:06]} 28. Qxe2 {[%emt 0:00:01]} Qf5 {[%emt 0:
00:03]} 29. Qf3 {[%emt 0:00:16]} Qc2 {[%emt 0:00:07]} 30. Ne4 {[%emt 0:00:07]}
Bc4+ {[%emt 0:00:09]} 31. Kg1 {[%emt 0:00:02]} Be2 {[%emt 0:00:02]} 32. Qf4 $6
{[%emt 0:00:04]} (32. Rd2) 32... Qxd1+ {[%emt 0:00:05]} 33. Kh2 {[%emt 0:00:01]
} Qd4 {[%emt 0:00:11]} 34. Qh6 {[%emt 0:00:07]} Rg8 {[%emt 0:00:02]} 35. Ng5 {
[%emt 0:00:05]} Qf4+ {[%emt 0:00:08]} 36. Kg1 {[%emt 0:00:00]} Qc1+ {[%emt 0:
00:04]} 37. Kh2 {[%emt 0:00:01]} Qf4+ {[%emt 0:00:01]} 38. Kg1 {[%emt 0:00:01]}
Qc1+ {[%emt 0:00:01]} 39. Kh2 {[%emt 0:00:01]} Qf4+ {[%emt 0:00:03]} 1/2-1/2
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "13.1"]
[White "Liang, Awonder"]
[Black "Zhu, Jiner"]
[Result "1-0"]
[ECO "D40"]
[WhiteElo "2592"]
[BlackElo "2459"]
[Annotator "Shahid"]
[PlyCount "93"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,93,27,-20,7,-29,7,7,7,17,13,11,11,17,7,-10,-8,-7,28,15,10,-7,47,3,48,
22,79,73,58,58,22,47,46,12,11,-16,34,-3,23,14,13,23,23,23,10,10,10,19,19,22,0,
-5,-3,6,-5,-7,-3,-10,-10,-38,-22,-31,-27,-19,12,26,19,27,22,0,0,-1,5,-36,-34,
-54,-42,-32,-27,-19,-19,-20,-1,-2,0,0,0,0,0,0,0,0,377,397,997,1102]} 1. c4 {
[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. Nc3 {[%emt 0:00:00]} e6 {[%emt 0:00:04]
} 3. Nf3 {[%emt 0:00:02]} d5 {[%emt 0:00:12]} 4. e3 {[%emt 0:00:02]} c5 {
[%emt 0:00:18]} 5. d4 {[%emt 0:00:04]} Nc6 {[%emt 0:00:08]} 6. a3 {[%emt 0:00:
01]} a6 {[%emt 0:00:30]} 7. dxc5 {[%emt 0:00:08]} Bxc5 {[%emt 0:00:02]} 8. b4 {
[%emt 0:00:04]} Ba7 {[%emt 0:00:10]} 9. Bb2 {[%emt 0:00:03]} O-O {[%emt 0:00:
05]} 10. Qc2 {[%emt 0:00:03]} Qe7 {[%emt 0:00:30]} 11. Be2 {[%emt 0:01:03]} h6
{[%emt 0:00:23]} 12. O-O {[%emt 0:00:08]} dxc4 {[%emt 0:00:25]} 13. Bxc4 {
[%emt 0:00:02]} b5 {[%emt 0:01:02]} 14. Ba2 {[%emt 0:00:15]} Bb7 {[%emt 0:00:
07]} 15. Rac1 {[%emt 0:00:08]} Rac8 {[%emt 0:00:24]} 16. Bb1 {[%emt 0:00:32]}
Rfd8 {[%emt 0:01:47]} 17. Rfd1 {[%emt 0:00:30]} Rxd1+ {[%emt 0:00:11]} 18. Rxd1
{[%emt 0:00:02]} Bb8 {[%emt 0:00:27]} 19. Ne4 {[%emt 0:01:00]} Nxe4 {[%emt 0:
00:03]} 20. Qxe4 {[%emt 0:00:01]} f5 {[%emt 0:00:01]} 21. Qd3 {[%emt 0:00:04]}
Rd8 {[%emt 0:00:06]} 22. Qe2 {[%emt 0:00:02]} Rxd1+ {[%emt 0:00:03]} 23. Qxd1 {
[%emt 0:00:00]} Qd6 {[%emt 0:00:14]} 24. Qc2 {[%emt 0:00:23]} Qd5 {[%emt 0:00:
59]} 25. e4 {[%emt 0:01:24]} fxe4 {[%emt 0:00:07]} 26. Qxe4 {[%emt 0:00:00]}
Qd1+ {[%emt 0:00:36]} 27. Qe1 {[%emt 0:00:27]} Qxe1+ {[%emt 0:00:06]} 28. Nxe1
{[%emt 0:00:00]} Ne5 {[%emt 0:00:21]} 29. f3 {[%emt 0:01:03]} Ba7+ {[%emt 0:00:
16]} 30. Kf1 {[%emt 0:00:09]} Nc4 {[%emt 0:00:01]} 31. Bc1 {[%emt 0:00:04]} Be3
{[%emt 0:00:33]} 32. Bxe3 {[%emt 0:00:08]} Nxe3+ {[%emt 0:00:00]} 33. Ke2 {
[%emt 0:00:01]} Nc4 {[%emt 0:00:01]} 34. Nc2 {[%emt 0:00:02]} Bd5 {[%emt 0:00:
41]} 35. Kd3 {[%emt 0:00:48]} Kf7 {[%emt 0:00:05]} 36. Ne3 {[%emt 0:02:00]}
Nxa3 {[%emt 0:00:16]} 37. Nxd5 {[%emt 0:00:01]} exd5 {[%emt 0:00:03]} 38. Ba2 {
[%emt 0:00:02]} Ke6 {[%emt 0:00:07]} 39. f4 {[%emt 0:00:22]} Kd6 {[%emt 0:00:
19]} 40. h4 {[%emt 0:00:29]} Nc4 {[%emt 0:00:16]} 41. Kd4 {[%emt 0:00:09]} Na3
{[%emt 0:00:04]} 42. Bb3 {[%emt 0:00:16]} Nc4 {[%emt 0:00:03]} 43. g4 {[%emt 0:
00:03]} Nb6 {[%emt 0:00:14]} 44. f5 {[%emt 0:00:21]} Nc4 {[%emt 0:00:15]} 45.
g5 {[%emt 0:00:06]} Nb6 $4 {[%emt 0:00:34]} (45... hxg5 46. hxg5 Ke7 47. Kxd5
a5 $11) 46. f6 {[%emt 0:00:04]} gxf6 {[%emt 0:00:28]} 47. gxh6 {[%emt 0:00:02]}
1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "13.3"]
[White "Shuvalova, Polina"]
[Black "Salimova, Nurgyul"]
[Result "0-1"]
[ECO "E05"]
[WhiteElo "2476"]
[BlackElo "2397"]
[Annotator "Shahid"]
[PlyCount "98"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,98,27,26,26,7,10,17,18,-27,12,15,1,-9,-13,-15,3,3,3,3,3,11,25,-3,8,16,
16,12,32,29,65,59,21,49,64,54,73,-5,8,-14,-1,12,-6,10,15,19,0,24,23,25,26,12,
18,9,0,0,12,5,28,25,25,0,0,0,0,11,12,8,38,68,43,60,75,70,79,79,79,79,79,88,113,
114,125,125,137,135,101,67,73,-11,0,-51,-43,-108,-100,-90,-96,-79,-83,-83,-92]
} 1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {
[%emt 0:00:00]} 3. Nf3 {[%emt 0:00:02]} d5 {[%emt 0:00:04]} 4. g3 {[%emt 0:00:
03]} Be7 {[%emt 0:00:03]} 5. Bg2 {[%emt 0:00:02]} O-O {[%emt 0:00:02]} 6. O-O {
[%emt 0:00:00]} dxc4 {[%emt 0:00:01]} 7. Ne5 {[%emt 0:00:04]} Nc6 {[%emt 0:00:
22]} 8. Bxc6 {[%emt 0:00:03]} bxc6 {[%emt 0:00:02]} 9. Nxc6 {[%emt 0:00:00]}
Qe8 {[%emt 0:00:03]} 10. Nxe7+ {[%emt 0:00:02]} Qxe7 {[%emt 0:00:01]} 11. Nc3 {
[%emt 0:00:05]} c5 {[%emt 0:01:38]} 12. dxc5 {[%emt 0:00:04]} Qxc5 {[%emt 0:00:
08]} 13. Be3 {[%emt 0:00:02]} Qh5 {[%emt 0:00:36]} 14. f3 {[%emt 0:00:31]} e5 {
[%emt 0:00:45]} 15. Qa4 {[%emt 0:04:16]} Bh3 {[%emt 0:01:29]} 16. Rf2 {[%emt 0:
00:37]} Be6 {[%emt 0:00:18]} 17. Qa5 {[%emt 0:00:58]} Rab8 {[%emt 0:00:45]} 18.
Rd1 {[%emt 0:00:23]} Rxb2 {[%emt 0:01:25]} 19. Rd8 {[%emt 0:00:50]} Rb8 {
[%emt 0:00:19]} 20. Rxb8 {[%emt 0:00:05]} Rxb8 {[%emt 0:00:02]} 21. Qxa7 {
[%emt 0:00:29]} Rc8 {[%emt 0:00:16]} 22. Qa5 {[%emt 0:00:13]} Nd7 {[%emt 0:01:
23]} 23. Rf1 {[%emt 0:00:11]} Qg6 {[%emt 0:00:07]} 24. Rc1 {[%emt 0:01:00]} h5
{[%emt 0:00:17]} 25. Nd5 {[%emt 0:00:19]} Bxd5 {[%emt 0:00:26]} 26. Qxd5 {
[%emt 0:00:00]} Qc6 {[%emt 0:00:15]} 27. Qxc6 {[%emt 0:00:22]} Rxc6 {[%emt 0:
00:00]} 28. a4 {[%emt 0:00:13]} f6 {[%emt 0:00:08]} 29. a5 {[%emt 0:00:27]} Kf7
{[%emt 0:00:04]} 30. Ra1 {[%emt 0:00:12]} Nb8 {[%emt 0:00:01]} 31. Kf2 {
[%emt 0:00:24]} Ke6 {[%emt 0:00:04]} 32. Ke1 {[%emt 0:00:07]} Na6 {[%emt 0:00:
16]} 33. Kd2 {[%emt 0:00:01]} Nb4 {[%emt 0:00:13]} 34. Ra3 {[%emt 0:00:17]} Nd5
{[%emt 0:00:14]} 35. Bf2 {[%emt 0:00:06]} Nc7 {[%emt 0:00:41]} 36. Ra4 {
[%emt 0:00:09]} f5 {[%emt 0:00:08]} 37. e4 {[%emt 0:00:05]} fxe4 {[%emt 0:00:
01]} 38. fxe4 {[%emt 0:00:00]} Kd7 {[%emt 0:00:14]} 39. Be3 {[%emt 0:00:04]}
Kc8 {[%emt 0:00:06]} 40. Kc3 {[%emt 0:00:06]} Nb5+ {[%emt 0:00:02]} 41. Kb4 {
[%emt 0:00:10]} Nd6 {[%emt 0:00:17]} 42. a6 {[%emt 0:00:02]} Kb8 {[%emt 0:00:
03]} 43. a7+ {[%emt 0:00:05]} Ka8 {[%emt 0:00:01]} 44. Ra1 {[%emt 0:00:21]} (
44. Ra5) 44... c3 {[%emt 0:00:07]} 45. Rc1 {[%emt 0:00:07]} Nxe4 {[%emt 0:00:
05]} 46. Kb5 {[%emt 0:00:03]} Rc8 {[%emt 0:00:05]} 47. Rc2 {[%emt 0:00:06]}
Nd6+ {[%emt 0:00:04]} 48. Kb4 {[%emt 0:00:02]} Nf5 {[%emt 0:00:05]} 49. Bf2 {
[%emt 0:00:17]} Ne7 {[%emt 0:00:08]} 0-1
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "13.4"]
[White "Bjerre, Jonas Buhl"]
[Black "Praggnanandhaa R"]
[Result "0-1"]
[ECO "E94"]
[WhiteElo "2550"]
[BlackElo "2608"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 18,64,96,62,100,50,48,26,47,18,14,14,10,0,0,-41,-12,-36,-32,0,-41,-71,
-68,-60,-63,-55,0,-161,-134,-257,-232,-285,-301,-307,-268,-267,-270,-258,-254,
-898,-885,-2199,-2086,-29985,-29986,-29986,-29987,-29986,-29987]} 1. d4 Nf6 2.
c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 Nbd7 7. O-O e5 8. Be3 c6 9. d5 c5
10. Ne1 Kh8 {E94: King's Indian: Classical: 6 Be2 e5 7 0-0: Various Black 7th
moves.} 11. g4 Ng8 12. Qd2 f5 {aiming for ...f4.White has an edge.} 13. gxf5
gxf5 14. exf5 Ne7 15. Kh1 {[#]} Nf6 $146 ({Predecessor:} 15... Nxf5 16. Bg5 Bf6
17. Ne4 Bxg5 18. Nxg5 Nf6 19. Bd3 Qe7 20. f3 Nh5 21. Ng2 Nf4 22. Nxf4 Qxg5 {
0-1 (22) Jaeger,F (2020)-Ostenstad,B (2465) Harstad 1997}) 16. Bd3 Bxf5 17. Rg1
e4 18. Be2 Ng6 19. Rg5 {[#]} Qd7 20. Nc2 Rf7 21. Rag1 Raf8 (21... Ne5 $1 $15)
22. Qe1 $2 {[#]} (22. Ne1 $1 $11 {and White is okay.}) 22... Ne5 $1 $19 23. Qf1
(23. Nb5 $17 {was called for.} Ne8 24. Qd2) 23... Nf3 24. Bxf3 exf3 25. Ne1 Ng4
26. Bf4 ({Avoid the trap} 26. Nxf3 $2 Bxc3 27. Qc1 Bf6 $19) 26... Bd4 27. Bg3 {
intending Nb5.} Rf6 28. Nxf3 $4 (28. a4) 28... Bxc3 29. Nh4 (29. bxc3 Be4 $19)
29... Be4+ 30. f3 Rxf3 {Black mates.} 31. Nxf3 Rxf3 {[%CAl Rf3f1]} 32. Qg2 {[#]
} Rxg3 $1 {[%CAl Rg4f2][%mdl 512] Weighted Error Value: White=1.08/Black=0.06}
(32... Rxg3 33. hxg3 Ne3 $1) 0-1
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "13.5"]
[White "Gukesh D"]
[Black "Yip, Carissa"]
[Result "0-1"]
[ECO "C90"]
[WhiteElo "2578"]
[BlackElo "2430"]
[Annotator "Shahid"]
[PlyCount "124"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,124,26,38,38,17,21,16,16,1,10,12,24,9,26,20,33,-6,-8,-18,-11,6,-3,-6,
3,11,35,21,43,30,26,24,23,21,51,53,32,19,13,10,36,26,52,31,53,34,36,25,83,77,
83,17,61,70,44,51,68,68,77,53,-17,-66,-74,-150,-166,-642,-657,-650,-676,-687,
-679,-681,-702,-702,-717,-728,-574,-586,-625,-600,-469,-505,-511,-515,-507,
-511,-499,-492,-499,-502,-536,-846,-613,-629,-403,-424,-433,-456,-471,-480,
-450,-476,-483,-498,-498,-498,-498,-498,-530,-538,-548,-556,-583,-584,-616,
-618,-651,-651,-651,-644,-651,-684,-695,-695,-727,-727,-806]} 1. e4 {[%emt 0:
00:00]} e5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} Nc6 {[%emt 0:00:00]} 3. Bb5
{[%emt 0:00:02]} a6 {[%emt 0:00:00]} 4. Ba4 {[%emt 0:00:01]} Nf6 {[%emt 0:00:
01]} 5. O-O {[%emt 0:00:07]} Be7 {[%emt 0:00:02]} 6. d3 {[%emt 0:01:04]} b5 {
[%emt 0:00:32]} 7. Bb3 {[%emt 0:00:02]} d6 {[%emt 0:00:01]} 8. c3 {[%emt 0:00:
27]} O-O {[%emt 0:00:06]} 9. Nbd2 {[%emt 0:00:02]} Na5 {[%emt 0:00:07]} 10. Bc2
{[%emt 0:00:01]} c5 {[%emt 0:00:01]} 11. Re1 {[%emt 0:00:02]} Re8 {[%emt 0:00:
08]} 12. Nf1 {[%emt 0:00:03]} Bf8 {[%emt 0:00:02]} 13. Ng3 {[%emt 0:00:03]} g6
{[%emt 0:00:01]} 14. h3 {[%emt 0:00:12]} Bg7 {[%emt 0:00:02]} 15. Bg5 {[%emt 0:
00:02]} h6 {[%emt 0:00:13]} 16. Be3 {[%emt 0:00:02]} Bb7 {[%emt 0:00:14]} 17.
Qd2 {[%emt 0:00:36]} Kh7 {[%emt 0:00:02]} 18. b4 {[%emt 0:00:03]} cxb4 {
[%emt 0:00:12]} 19. cxb4 {[%emt 0:00:02]} Nc6 {[%emt 0:00:00]} 20. Bb3 {
[%emt 0:00:19]} d5 {[%emt 0:01:26]} 21. Bc5 {[%emt 0:01:19]} Qd7 {[%emt 0:00:
23]} 22. exd5 {[%emt 0:03:03]} Nxd5 {[%emt 0:00:03]} 23. Ne4 {[%emt 0:00:01]}
Nf4 {[%emt 0:03:01]} 24. d4 {[%emt 0:00:05]} Rad8 {[%emt 0:01:14]} 25. d5 {
[%emt 0:02:02]} Ne7 {[%emt 0:01:59]} 26. Bb6 {[%emt 0:01:17]} Rc8 {[%emt 0:01:
00]} 27. Nc5 {[%emt 0:00:08]} (27. Rad1 Nexd5 (27... f5 $2 28. Nc5) 28. Be3)
27... Rxc5 {[%emt 0:00:07]} 28. Bxc5 {[%emt 0:00:05]} Nexd5 {[%emt 0:00:02]}
29. Rad1 {[%emt 0:00:38]} Qf5 {[%emt 0:00:46]} 30. Bxd5 {[%emt 0:00:10]} (30.
Nh2) 30... Bxd5 {[%emt 0:00:02]} 31. Re3 {[%emt 0:00:01]} Nxh3+ {[%emt 0:00:15]
} 32. Kf1 {[%emt 0:00:14]} Bc4+ {[%emt 0:00:04]} 33. Ke1 {[%emt 0:00:13]} Nf4 {
[%emt 0:00:01]} 34. Nh4 {[%emt 0:00:11]} Qg4 {[%emt 0:00:06]} 35. Qd7 {[%emt 0:
00:06]} Qxh4 {[%emt 0:00:34]} 36. g3 {[%emt 0:00:01]} Ng2+ {[%emt 0:00:03]} 37.
Kd2 {[%emt 0:00:00]} Qd8 {[%emt 0:00:03]} 38. Rd3 {[%emt 0:00:15]} Bxd3 {
[%emt 0:00:04]} 39. Qxd3 {[%emt 0:00:02]} Qxd3+ {[%emt 0:00:10]} 40. Kxd3 {
[%emt 0:00:01]} Rd8+ {[%emt 0:00:05]} 41. Ke2 {[%emt 0:00:00]} Rxd1 {[%emt 0:
00:00]} 42. Kxd1 {[%emt 0:00:02]} h5 {[%emt 0:00:03]} 43. Ke2 {[%emt 0:00:00]}
h4 {[%emt 0:00:02]} 44. Kf1 {[%emt 0:00:04]} h3 {[%emt 0:00:02]} 45. f3 {
[%emt 0:00:09]} f5 {[%emt 0:00:04]} 46. Kg1 {[%emt 0:00:04]} f4 {[%emt 0:00:02]
} 47. Kh2 {[%emt 0:00:01]} fxg3+ {[%emt 0:00:02]} 48. Kxh3 {[%emt 0:00:01]}
Nf4+ {[%emt 0:00:03]} 49. Kxg3 {[%emt 0:00:00]} g5 {[%emt 0:00:02]} 50. Kg4 {
[%emt 0:00:03]} Kg6 {[%emt 0:00:01]} 51. Be7 {[%emt 0:00:01]} Bf6 {[%emt 0:00:
01]} 52. Bc5 {[%emt 0:00:01]} Nd3 {[%emt 0:00:05]} 53. Bd6 {[%emt 0:00:03]} Nc1
{[%emt 0:00:03]} 54. a3 {[%emt 0:00:01]} Ne2 {[%emt 0:00:03]} 55. Bc5 {[%emt 0:
00:02]} Nd4 {[%emt 0:00:02]} 56. Kg3 {[%emt 0:00:05]} Nc2 {[%emt 0:00:01]} 57.
Kg4 {[%emt 0:00:02]} Nxa3 {[%emt 0:00:01]} 58. Bd6 {[%emt 0:00:00]} Nc2 {
[%emt 0:00:02]} 59. Bc5 {[%emt 0:00:00]} Bg7 {[%emt 0:00:05]} 60. Bd6 {[%emt 0:
00:02]} Ne3+ {[%emt 0:00:01]} 61. Kh3 {[%emt 0:00:01]} Kf5 {[%emt 0:00:03]} 62.
Bc5 {[%emt 0:00:03]} Nd5 {[%emt 0:00:02]} 0-1
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "13.6"]
[White "Keymer, Vincent"]
[Black "Lei, Tingjie"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2591"]
[BlackElo "2505"]
[Annotator "Shahid"]
[PlyCount "107"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,107,26,26,26,15,20,16,11,18,16,-2,3,10,37,25,21,13,16,13,17,11,8,10,0,
7,4,0,2,3,9,9,13,-25,-26,-23,-6,-32,-16,-46,-52,-59,-81,-70,-35,-30,-2,-62,-25,
-16,-40,-39,17,13,5,14,10,10,29,29,31,2,145,174,174,138,144,118,137,137,134,
115,134,95,134,155,201,234,214,264,1256,391,847,837,837,887,898,898,908,939,
940,1145,1187,1187,1249,684,688,715,904,930,1496,1855,1855,1029,1033,28553,
29969,2384,2858,793]} 1. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2. e3 {
[%emt 0:00:00]} Nf6 {[%emt 0:00:01]} 3. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:04]}
4. Nc3 {[%emt 0:00:01]} Be7 {[%emt 0:00:09]} 5. b3 {[%emt 0:00:02]} O-O {
[%emt 0:00:06]} 6. Bb2 {[%emt 0:00:01]} dxc4 {[%emt 0:00:03]} 7. Bxc4 {[%emt 0:
00:05]} a6 {[%emt 0:00:02]} 8. a4 {[%emt 0:00:02]} c5 {[%emt 0:00:31]} 9. O-O {
[%emt 0:01:46]} Nc6 {[%emt 0:00:25]} 10. Ne2 {[%emt 0:00:08]} Bd7 {[%emt 0:00:
50]} 11. Qb1 {[%emt 0:00:47]} h6 {[%emt 0:02:49]} 12. Rd1 {[%emt 0:01:17]} Na5
{[%emt 0:00:42]} 13. Ng3 {[%emt 0:00:22]} b5 {[%emt 0:00:14]} 14. axb5 {
[%emt 0:00:02]} axb5 {[%emt 0:00:07]} 15. Be2 {[%emt 0:00:05]} Bc6 {[%emt 0:01:
27]} 16. e4 {[%emt 0:00:22]} Qb6 {[%emt 0:00:29]} 17. Qc2 {[%emt 0:00:24]} Rfc8
{[%emt 0:00:13]} 18. Rab1 {[%emt 0:00:37]} Be8 {[%emt 0:00:11]} 19. Bxf6 {
[%emt 0:00:20]} Bxf6 {[%emt 0:00:04]} 20. e5 {[%emt 0:00:01]} Be7 {[%emt 0:00:
41]} 21. Qe4 {[%emt 0:00:54]} Nc6 {[%emt 0:00:17]} 22. Bd3 {[%emt 0:00:10]} g6
{[%emt 0:00:09]} 23. Qf4 {[%emt 0:00:41]} Kg7 {[%emt 0:00:26]} 24. h4 {[%emt 0:
00:10]} Nb4 {[%emt 0:00:08]} 25. Be4 {[%emt 0:00:18]} Nd5 {[%emt 0:00:30]} 26.
Bxd5 {[%emt 0:01:24]} exd5 {[%emt 0:00:02]} 27. d4 {[%emt 0:00:11]} c4 {
[%emt 0:00:22]} 28. bxc4 {[%emt 0:00:01]} Rxc4 {[%emt 0:00:03]} 29. Nf1 {
[%emt 0:00:09]} Qe6 {[%emt 0:00:25]} 30. Ne3 {[%emt 0:00:02]} h5 $2 {[%emt 0:
00:37]} (30... Rc3) 31. Nxc4 {[%emt 0:00:21]} bxc4 {[%emt 0:00:01]} 32. Ng5 {
[%emt 0:00:03]} Qc6 {[%emt 0:00:08]} 33. Ra1 {[%emt 0:00:23]} Rxa1 {[%emt 0:00:
14]} 34. Rxa1 {[%emt 0:00:00]} Qb7 {[%emt 0:00:03]} 35. Qc1 {[%emt 0:00:14]}
Qb6 {[%emt 0:00:05]} 36. Qf4 {[%emt 0:00:16]} Qb7 {[%emt 0:00:10]} 37. Qf3 {
[%emt 0:00:08]} Bf8 {[%emt 0:00:11]} 38. Qf6+ {[%emt 0:00:18]} Kg8 {[%emt 0:00:
01]} 39. e6 {[%emt 0:00:00]} Bg7 {[%emt 0:00:01]} 40. exf7+ {[%emt 0:00:16]}
Bxf7 {[%emt 0:00:01]} 41. Ra8+ {[%emt 0:00:09]} Qxa8 {[%emt 0:00:04]} 42. Qxf7+
{[%emt 0:00:01]} Kh8 {[%emt 0:00:01]} 43. Qxg6 {[%emt 0:00:01]} Kg8 {[%emt 0:
00:14]} 44. Qf7+ {[%emt 0:00:02]} Kh8 {[%emt 0:00:02]} 45. Qxh5+ {[%emt 0:00:
01]} Kg8 {[%emt 0:00:01]} 46. Qh7+ {[%emt 0:00:09]} Kf8 {[%emt 0:00:01]} 47.
Ne6+ {[%emt 0:00:02]} Kf7 {[%emt 0:00:07]} 48. Nxg7 {[%emt 0:00:01]} Qa1+ {
[%emt 0:00:07]} 49. Kh2 {[%emt 0:00:01]} c3 {[%emt 0:00:02]} 50. Nf5+ {[%emt 0:
00:05]} Ke6 {[%emt 0:00:06]} 51. Qg6+ {[%emt 0:00:03]} Kd7 {[%emt 0:00:02]} 52.
Qd6+ {[%emt 0:00:04]} Kc8 {[%emt 0:00:01]} 53. Qc6+ {[%emt 0:00:10]} Kb8 {
[%emt 0:00:05]} 54. Ne3 {[%emt 0:00:06]} 1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "13.7"]
[White "Mendonca, Leon Luke"]
[Black "Badelka, Olga"]
[Result "1-0"]
[ECO "D24"]
[WhiteElo "2549"]
[BlackElo "2433"]
[Annotator "Shahid"]
[PlyCount "63"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,63,26,26,27,10,16,18,8,23,63,52,73,69,64,46,49,52,47,58,53,38,38,4,39,
24,24,45,52,51,33,46,45,32,33,20,15,12,11,4,4,4,32,0,39,23,26,-68,65,-114,-91,
-171,-69,-60,-57,-60,-60,-62,55,54,56,53,828,844,865,886]} 1. d4 {[%emt 0:00:
00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nf3 {
[%emt 0:00:03]} d5 {[%emt 0:00:00]} 4. Nc3 {[%emt 0:00:03]} dxc4 {[%emt 0:00:
02]} 5. e4 {[%emt 0:00:04]} b5 {[%emt 0:00:02]} 6. e5 {[%emt 0:00:04]} Nd5 {
[%emt 0:00:01]} 7. Nxb5 {[%emt 0:00:02]} Nb6 {[%emt 0:00:01]} 8. Be2 {[%emt 0:
00:14]} Be7 {[%emt 0:00:01]} 9. O-O {[%emt 0:00:04]} Nc6 {[%emt 0:00:03]} 10.
Be3 {[%emt 0:00:14]} O-O {[%emt 0:00:18]} 11. b3 {[%emt 0:01:08]} a6 {[%emt 0:
01:16]} 12. Nc3 {[%emt 0:00:18]} cxb3 {[%emt 0:00:02]} 13. axb3 {[%emt 0:00:01]
} Bb7 {[%emt 0:00:17]} 14. Qb1 {[%emt 0:00:28]} Nb4 {[%emt 0:00:09]} 15. Rc1 {
[%emt 0:00:30]} N6d5 {[%emt 0:00:44]} 16. Ne4 {[%emt 0:00:27]} Nxe3 {[%emt 0:
01:08]} 17. fxe3 {[%emt 0:00:03]} Nd5 {[%emt 0:00:33]} 18. Kf2 {[%emt 0:01:36]}
f5 {[%emt 0:00:19]} 19. exf6 {[%emt 0:00:34]} Nxf6 {[%emt 0:00:17]} 20. Nxf6+ {
[%emt 0:01:32]} Bxf6 {[%emt 0:00:02]} 21. Ra5 {[%emt 0:01:06]} Rb8 {[%emt 0:02:
13]} 22. Bd3 {[%emt 0:00:34]} g6 {[%emt 0:00:43]} 23. Be4 {[%emt 0:00:18]} Qd6
{[%emt 0:00:46]} 24. Rac5 {[%emt 0:00:48]} Bxd4 {[%emt 0:00:43]} 25. Rc6 {
[%emt 0:01:18]} Bxc6 {[%emt 0:00:02]} 26. Rxc6 {[%emt 0:00:01]} Bxe3+ {[%emt 0:
01:32]} 27. Kxe3 {[%emt 0:00:00]} Qf4+ {[%emt 0:00:01]} 28. Kf2 {[%emt 0:00:03]
} Rbd8 {[%emt 0:00:19]} 29. Kg1 {[%emt 0:00:38]} Qe3+ {[%emt 0:00:06]} 30. Kh1
{[%emt 0:00:01]} Qxe4 $4 {[%emt 0:00:17]} (30... Rd4 31. Rxe6 Qe2) 31. Qxe4 {
[%emt 0:00:10]} Rd1+ {[%emt 0:00:10]} 32. Ng1 {[%emt 0:00:01]} 1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "13.8"]
[White "Abdumalik, Zhansaya"]
[Black "Nihal Sarin"]
[Result "1/2-1/2"]
[ECO "B15"]
[WhiteElo "2472"]
[BlackElo "2620"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 12,96,29,0,0,-8,11,-20,-9,-55,-50,-89,-54,-95,-21,-25,-26,-23,-25,-164,
-150,-132,12,-83,-41,-51,-39,-49,-25,-36,-35,-32,-2,-7,-3,-5,-3,-11,0,0,0,0,0,
0,0,0,0,0,10,0,0,0,0,-2,-6,-10,-10,-12,-13,-25,-8,-131,-209,-191,-8,-8,-8,-8,
-8,-8,-3,-3,-2,-3,0,0,0,0,0,0,16,16,16,16,16,0,29]} 1. e4 c6 2. d4 d5 3. Nd2
dxe4 4. Nxe4 Nf6 5. Ng3 h5 6. h4 Bg4 7. Be2 Nbd7 {B15: Caro-Kann: 3 Nc3:3...
g6 and 3...dxe4 4 Nxe4 Nf6 5 Nxf6+ exf6.} 8. Nf3 Qc7 9. Qd3 e6 10. Bd2 Bd6 {[#]
} 11. Nf1 $146 ({Predecessor:} 11. Ng5 Bxe2 12. Nxe2 c5 13. g3 c4 14. Qf3 Nb6
15. Bf4 Nbd5 16. Bxd6 Qxd6 17. c3 {1-0 (45) Silva,K (1884)-Teshima,R (1970)
Sao Paulo 2018}) 11... e5 (11... O-O) 12. Nxe5 Bxe5 (12... Nxe5 $17 13. dxe5
Bxe5 14. Bxg4 Nxg4) 13. Bxg4 $1 $11 Nxg4 14. dxe5 O-O-O 15. Qa3 (15. Ne3 $1 $11
) 15... Qxe5+ $19 16. Ne3 a6 (16... Nc5 $17 17. Rf1 Nxe3 18. Bxe3 Rhe8) 17. Qc3
(17. O-O-O $1 $11 {remains equal.}) 17... Qxc3 18. Bxc3 Nxe3 19. fxe3 Rhe8 20.
Bxg7 Rxe3+ 21. Kf2 Re6 (21... Re4 {looks sharper.} 22. g3 Rg8 23. Bh6 Nc5 24.
Bf4 Ne6) 22. Rad1 Rg8 23. Bd4 Reg6 24. Rhg1 Rg4 25. g3 f5 26. Be3 Nf6 27. Bf4
Nd5 28. Bg5 Re8 29. Rge1 Rge4 (29... Rf8 {is more complex.} 30. Bh6 Rfg8 31.
Bg5 Rb4 32. b3 Nc3) 30. a3 Kd7 31. Rxe4 Rxe4 $11 {[%mdl 4096] Endgame KRB-KRN}
32. Rd3 Ke6 33. b3 b5 34. Rd2 a5 35. Re2 a4 {Black wants to play ...Rxe2+.} 36.
Kf3 (36. Rxe4+ $11 {keeps the balance.} fxe4 37. Bc1) 36... b4 (36... Rxe2 $17
37. Kxe2 b4) 37. Bc1 $19 Nc3 {[#]} (37... bxa3 $19 38. Bxa3 Rxe2 39. Kxe2 Nc3+
40. Kf3 Nb5) 38. Rxe4+ $11 {The position is equal.} fxe4+ {KB-KN} 39. Ke3 bxa3
40. Bxa3 {Black should prevent bxa4.} axb3 (40... Nb5 {keeps more tension.} 41.
Bc1 axb3 42. cxb3 Ke5 43. Bb2+ Kf5) 41. cxb3 Kf5 42. Bd6 Nd5+ 43. Kd4 e3 {
[#] ...e2 is the strong threat.} 44. Kd3 Kg4 {And now ...Kf3 would win.} 45.
Ke2 Kf5 {aiming for ...Ke4.} 46. Kf3 e2 47. Kxe2 Ke4 $1 48. Kd2 Nf6 {Weighted
Error Value: White=0.20/Black=0.23} 1/2-1/2
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "13.9"]
[White "Khademalsharieh, Sarasadat"]
[Black "Mammadzada, Gunay"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "2494"]
[BlackElo "2443"]
[Annotator "ChessBase"]
[PlyCount "115"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,82,26,19,19,15,12,16,40,44,44,55,44,14,0,11,11,-7,14,14,14,-44,30,31,
26,24,40,19,16,4,41,56,69,63,56,40,50,49,49,49,73,27,5,-10,-12,-29,-36,-36,-52,
-52,-41,-63,-43,-72,-57,-61,-69,-83,-78,-84,-68,-46,-39,-63,-62,-57,-66,-93,
-73,-135,-163,-146,-124,-102,-102,-102,42,35,24,30,30,49,49,64,71]} 1. Nf3 {
[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2. e3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:01]}
3. c4 {[%emt 0:00:01]} c6 {[%emt 0:00:02]} 4. Nc3 {[%emt 0:00:05]} a6 {[%emt 0:
00:07]} 5. d4 {[%emt 0:00:32]} Bf5 {[%emt 0:00:02]} 6. Ne5 {[%emt 0:00:01]}
Nbd7 {[%emt 0:00:02]} 7. Qb3 {[%emt 0:00:05]} Qc7 {[%emt 0:00:02]} 8. cxd5 {
[%emt 0:00:03]} Nxe5 {[%emt 0:00:02]} 9. dxe5 {[%emt 0:00:01]} Nxd5 {[%emt 0:
00:01]} 10. Bc4 {[%emt 0:00:02]} e6 {[%emt 0:00:03]} 11. e4 {[%emt 0:00:09]}
Nxc3 {[%emt 0:00:02]} 12. exf5 {[%emt 0:00:02]} Nd5 {[%emt 0:00:01]} 13. Bxd5 {
[%emt 0:00:00]} cxd5 {[%emt 0:01:33]} 14. O-O {[%emt 0:00:20]} Be7 {[%emt 0:02:
20]} 15. Qg3 {[%emt 0:00:22]} g6 {[%emt 0:02:37]} 16. f6 {[%emt 0:00:38]} Bc5 {
[%emt 0:00:02]} 17. Be3 {[%emt 0:00:42]} d4 {[%emt 0:01:20]} 18. Bh6 {[%emt 0:
00:27]} Qd7 {[%emt 0:00:34]} 19. Rac1 {[%emt 0:00:06]} Qd5 {[%emt 0:00:13]} 20.
a3 {[%emt 0:02:45]} Kd7 {[%emt 0:00:13]} 21. b4 {[%emt 0:00:21]} Bb6 {[%emt 0:
00:01]} 22. Rcd1 {[%emt 0:00:04]} Rac8 {[%emt 0:00:11]} 23. Rd3 {[%emt 0:00:02]
} Rc4 {[%emt 0:00:33]} 24. Rfd1 {[%emt 0:00:04]} Kc8 {[%emt 0:00:06]} 25. h4 {
[%emt 0:00:25]} Bc7 {[%emt 0:00:30]} 26. Re1 {[%emt 0:01:01]} Rd8 {[%emt 0:00:
11]} 27. h5 {[%emt 0:00:21]} Kb8 {[%emt 0:00:24]} 28. Bf4 {[%emt 0:00:04]} Qc6
{[%emt 0:00:12]} 29. Bd2 {[%emt 0:01:00]} Rd5 {[%emt 0:00:06]} 30. f4 {[%emt 0:
00:30]} Rd8 {[%emt 0:00:13]} 31. Rd1 {[%emt 0:00:04]} Bb6 {[%emt 0:00:03]} 32.
Be1 {[%emt 0:00:16]} gxh5 {[%emt 0:00:18]} 33. Bf2 {[%emt 0:00:09]} Qe4 {
[%emt 0:00:13]} 34. Qh4 {[%emt 0:00:15]} Rg8 {[%emt 0:00:03]} 35. Rg3 {[%emt 0:
00:10]} Rxg3 {[%emt 0:00:11]} 36. Qxg3 {[%emt 0:00:02]} Qg6 {[%emt 0:00:01]}
37. Qf3 {[%emt 0:00:07]} Qg4 {[%emt 0:00:04]} 38. Qxg4 {[%emt 0:00:29]} hxg4 {
[%emt 0:00:00]} 39. f5 {[%emt 0:00:10]} Rc6 {[%emt 0:00:32]} 40. Bxd4 {[%emt 0:
00:19]} Kc7 {[%emt 0:00:01]} 41. Bxb6+ {[%emt 0:00:10]} Rxb6 {[%emt 0:00:00]}
42. fxe6 {[%emt 0:00:19]} Rxe6 {[%emt 0:00:02]} 43. Rd5 {[%emt 0:00:02]} b6 {
[%emt 0:00:04]} 44. Kh2 {[%emt 0:00:11]} h5 {[%emt 0:00:15]} 45. Kg3 {[%emt 0:
00:05]} Kc6 {[%emt 0:00:00]} 46. Rd8 {[%emt 0:00:14]} Rxe5 {[%emt 0:00:02]} 47.
Rf8 {[%emt 0:00:01]} Kd6 {[%emt 0:00:02]} 48. Rxf7 {[%emt 0:00:03]} Ke6 {
[%emt 0:00:01]} 49. Rb7 {[%emt 0:00:26]} Kxf6 {[%emt 0:00:04]} 50. Rxb6+ {
[%emt 0:00:01]} Kg5 {[%emt 0:00:07]} 51. Rxa6 {[%emt 0:00:02]} Re3+ {[%emt 0:
00:01]} 52. Kh2 {[%emt 0:00:02]} Kh4 {[%emt 0:00:10]} 53. Rf6 {[%emt 0:00:11]}
Rxa3 {[%emt 0:00:05]} 54. Rf5 {[%emt 0:00:12]} Rb3 {[%emt 0:00:07]} 55. g3+ {
[%emt 0:00:04]} Rxg3 {[%emt 0:00:06]} 56. Rxh5+ {[%emt 0:00:00]} Kxh5 {[%emt 0:
00:00]} 57. Kxg3 {[%emt 0:00:01]} Kg5 {[%emt 0:00:09]} 58. b5 {[%emt 0:00:03]}
1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "13.10"]
[White "Abdusattorov, Nodirbek"]
[Black "Murzin, Volodar"]
[Result "1-0"]
[ECO "B14"]
[WhiteElo "2627"]
[BlackElo "2478"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 14,93,18,0,7,8,12,0,0,0,23,19,21,14,68,6,21,22,25,25,22,18,25,22,26,0,
56,66,70,51,58,43,76,52,62,55,47,55,66,61,48,20,61,54,54,54,56,54,87,86,81,50,
164,158,165,113,144,95,96,88,93,74,97,95,100,89,83,53,157,161,172,76,775,777,
774,759,1706,1089,1092,1072,29989,522]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4
Nf6 5. Nc3 g6 6. Qb3 Bg7 7. cxd5 O-O 8. g3 a5 {B14: Caro-Kann: Panov-Botvinnik
Attack with 5...e6 and 5...g6.} 9. Bg2 {[#]} a4 $146 ({Predecessor:} 9... Na6
10. Nge2 Nb4 11. O-O Bf5 12. Bf4 Bc2 13. Qa3 Nfxd5 14. Be5 Bf5 15. Bxg7 Kxg7
16. Rad1 {1/2-1/2 (57) Erdogdu,M (2396)-Purtseladze,M (2274) Chess.com INT 2021
}) 10. Nxa4 Nxd5 {The position is equal.} 11. Ne2 e6 12. O-O Nc6 13. Nac3 Re8 (
13... Nxc3 $11 14. bxc3 Na5) 14. Rd1 (14. Nxd5 $14 exd5 15. Be3) 14... Bd7 15.
Nxd5 (15. Qxb7 $2 Na5 $19) 15... exd5 16. Be3 Bg4 17. Nc3 Bxd1 18. Rxd1 Ne7 19.
Nxd5 {And now Bg5 would win.} ({Don't play} 19. Qxb7 Rb8 $15) 19... Nxd5 (19...
Nf5 $11) 20. Bxd5 $14 Qd7 21. Kg2 ({But not} 21. Bxb7 $2 Rab8 $19) 21... Red8
22. Bf3 ({Wrong is} 22. Bxb7 $2 Rab8 $19) 22... Ra5 23. a3 Rb5 24. Qc2 Rc8 25.
Qa4 Rd5 26. Qxd7 Rxd7 27. Rd2 Bf8 28. Bg4 f5 29. Bd1 $36 {[%mdl 2048]
Threatens to win with Bb3+. White is pushing.} Kg7 30. Bb3 {Be6 is the strong
threat.} Rdd8 31. Be6 Rc7 32. d5 {aiming for Bd4+.} Rc4 (32... Bc5 $14) 33.
Bd4+ $18 Kh6 {[#]} 34. Bf6 ({White should try} 34. Bb6 $1 $18 {[%CAl Rb6d8]}
Ra8 35. d6) 34... Rd6 35. Be5 Rd8 36. h4 Bd6 37. Bc3 Re8 38. Rd3 Ra8 39. Kh3
Re8 40. f3 f4 ({Black should play} 40... b5 $14) 41. g4 $16 {Intending g5+ and
mate.} g5 42. Bf6 (42. Rd1 $18 {has better winning chances.}) 42... gxh4 $2 {
[%mdl 8192] [#] Black cannot hold the game after this.} (42... Kg6 $16 43. hxg5
h6) 43. Bf7 $1 $18 {[%csl Gf6][%CAl Rg4g5]} Re5 44. Kxh4 Be7 45. g5+ {[%mdl 64]
Overworked Piece} Rxg5 46. Bxe7 {White threatens Bf8+ and mate.} Rg1 47. Bf8+ {
Weighted Error Value: White=0.14/Black=0.37} 1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "14.1"]
[White "Zhu, Jiner"]
[Black "Murzin, Volodar"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2459"]
[BlackElo "2478"]
[Annotator "Shahid"]
[PlyCount "150"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 12,150,17,20,56,37,37,38,39,29,33,29,38,5,138,130,133,133,126,127,150,
122,134,129,114,93,83,83,82,31,33,33,36,20,49,41,66,66,79,72,79,79,76,75,80,79,
80,34,47,29,46,55,77,72,144,138,139,0,107,108,102,66,105,106,104,74,125,85,83,
79,85,79,87,81,80,60,66,63,85,8,8,0,0,0,0,0,0,0,0,0,0,0,8,0,0,-32,-20,-33,-41,
-48,-29,-39,-29,-22,-43,-127,-143,-239,-239,-387,-255,-255,-255,-368,-360,-384,
-360,-351,-303,-346,-291,-274,-246,-666,-666,-535,-526,-506,-305,-865,-792,
-1033,-787,-1538,-1450,-29979,-29980,-29981,-29982,-29983,-29983]} 1. e4 c6 2.
d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. O-O c5 {6...h6 is setting a new trend.}
7. dxc5 Nbc6 {B12: Caro-Kann: Advance Variation.} 8. c4 dxc4 9. Bxc4 Ng6 {
White is slightly better.} 10. Be3 Be7 11. Nc3 O-O 12. Be2 {[#]} Ngxe5 $4 $146
(12... Qb8 $11) ({Predecessor:} 12... Qb8 13. Nd2 Rd8 14. f4 Nb4 15. Rc1 b6 16.
c6 Nxc6 17. Bf3 Qb7 18. Nb5 Rac8 {1-0 (42) Harikrishna,P (2729)-Mamedyarov,S
(2817) Kolkata 2018}) 13. Nxe5 $16 Nxe5 14. f4 $1 {Black must now prevent Qxd8.
} Qxd1 (14... Nc6 15. g4 $18) 15. Raxd1 Ng4 16. Bxg4 Bxg4 17. Rd7 {[%csl Bb7,
Be7][%mdl 64] Double Attack} Bf6 18. Rxb7 Bxc3 19. bxc3 {Strongly threatening
c6.} Bf5 20. c6 (20. Rd1 $16) 20... Be4 $14 21. Rxa7 Bxc6 22. Rd1 Bd5 23. a3
Rab8 24. Bc5 Rfc8 25. Bb4 h6 26. Rd4 Rc4 27. Rxc4 Bxc4 $16 {[%mdl 4096]
Endgame KRB-KRB} 28. Rc7 Bb3 29. Rd7 Rc8 30. Kf2 Rc4 31. Ke3 Rc6 32. g3 f6 (
32... g5 $142) 33. Ra7 Rc8 34. Rd7 ({White should play} 34. a4 $16) 34... Ba4 (
34... Rc6 $1 $11) 35. Rd6 (35. Re7 {feels hotter.} Bb3 36. Ra7 Re8 37. a4 e5
38. a5) 35... Bb3 36. Kd4 Rc4+ {[#]} 37. Kd3 $1 Rc8 38. Rd7 Ba4 (38... Kh7 $142
) 39. Rd4 Kf7 40. Bd6 Bc6 41. c4 g5 42. Kc3 Kg6 43. c5 Ra8 44. Kb3 Kf5 45. a4 (
45. Rb4 $16) 45... e5 $11 46. fxe5 fxe5 47. g4+ Ke6 48. Rb4 (48. Rd3 {is
interesting.} Bxa4+ 49. Kb4 Be8 50. Re3 Ra4+ 51. Kc3) 48... Kd5 49. Kc3 Bxa4
50. Rb2 Bc6 51. Rd2+ Ke6 52. Re2 e4 53. Kd4 Ra4+ 54. Ke3 Ra3+ 55. Kd4 Rd3+ 56.
Kc4 Bd5+ 57. Kb4 Rb3+ 58. Ka5 {[#] White is on the road to losing.} ({Better is
} 58. Ka4 $1 $15) 58... e3 $1 $17 59. Bg3 $4 (59. Bf8 $17 Bc4 60. Ka4) 59...
Bc4 $19 60. Rc2 (60. Ka4 {was the only defense.} Kd5 61. Bd6) 60... Rb5+ 61.
Ka4 Rxc5 {aiming for ...Bb5+.} 62. Kb4 (62. Rc3 {is the only way for White.} e2
63. Re3+ Kd5 64. Re5+ Kd4 65. Rxc5 Kxc5 66. Bf2+ Kd5 67. Kb4) 62... Kd5 63. Rc1
{Hoping for Rd1+.} Rb5+ 64. Kc3 {With the idea Rd1+.} Rb3+ 65. Kc2 Ke4 66. Ra1
Rb6 67. Ra7 $2 (67. Ra4 Kd4 68. Be1) 67... Bd3+ 68. Kc3 Rc6+ 69. Kb4 Kf3 70.
Re7 $2 (70. Rc7 Rb6+ 71. Kc3) 70... e2 71. Rd7 Be4 72. Re7 Rc1 73. Re6 Rg1 {
Black mates.} 74. Rf6+ Kxg4 75. Re6 Rxg3 {Weighted Error Value: White=0.19/
Black=0.18} 0-1
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "14.2"]
[White "Mammadzada, Gunay"]
[Black "Abdusattorov, Nodirbek"]
[Result "0-1"]
[ECO "C72"]
[WhiteElo "2443"]
[BlackElo "2627"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 10,68,35,34,41,57,46,35,116,0,0,-33,-39,-43,-20,-20,-20,-20,-22,-35,-31,
-41,-38,-36,0,-9,0,-31,-31,-31,-35,-37,-37,-33,-33,-113,-101,-158,-116,-245,
-231,-254,-241,-240,-250,-331,-302,-476,-516,-556,-547,-529,-529,-475,-341,
-797,-789,-756,-739,-1420,-1364]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5.
O-O Bd7 6. c3 g5 {C72: Ruy Lopez: Deferred Steinitz: 5 0-0.} 7. d4 g4 8. Ne1
Bg7 $5 {[%mdl 4] [#] A promising side line.} ({Better is} 8... h5 $14) 9. dxe5
$146 ({White should play} 9. d5 $16 Nce7 10. Qxg4) ({Predecessor:} 9. d5 Nce7
10. Qxg4 Bxa4 11. Qxg7 Ng6 12. f4 Qf6 13. Qxf6 Nxf6 14. fxe5 Nxe4 15. exd6 cxd6
16. Nd2 Nc5 17. Nc4 {1-0 (17) Boguslavsky,O (2316)-Dushatskiy,F (2225)
Eppingen 2004}) 9... Nxe5 $11 10. Bxd7+ Qxd7 11. Nd3 h5 12. Nxe5 Bxe5 13. Nd2
O-O-O 14. Nc4 $1 Bg7 15. Bg5 Re8 16. f3 h4 {White must now prevent ...Qb5.} (
16... Qb5 $5 17. Qd5 $8 Qxd5 18. exd5 b5 $11) 17. fxg4 h3 18. g3 Rxe4 19. Qd5
Qe6 20. Qxe6+ fxe6 21. Rf4 Re2 {Strongly threatening ...Nh6.} 22. Raf1 (22. Rf2
$15 Rxf2 23. Kxf2) 22... b5 23. Na5 (23. Ne3 $142) 23... Nh6 ({And not} 23...
Rxb2 24. Rf8+ $1 {[%mdl 512]} Bxf8 25. Rxf8+ Kd7 26. Rd8#) 24. R1f2 {[#] White
does not recover from this.} (24. R4f2 $17 Rxf2 25. Rxf2) 24... Re5 $1 $19 {
[%CAl Re5g5]} 25. Bh4 Re1+ 26. Rf1 Rxf1+ 27. Kxf1 e5 28. Rf3 (28. Re4 $142 d5
29. Re2) 28... Nxg4 29. Kg1 Bh6 30. Nc6 e4 31. Rf7 e3 {( -> ...e2)} 32. Kf1 (
32. Nd4) 32... Nxh2+ {Black is clearly winning.} 33. Ke2 Ng4 34. Ne7+ Kb7 {
Weighted Error Value: White=0.55/Black=0.13} 0-1
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "14.3"]
[White "Nihal Sarin"]
[Black "Khademalsharieh, Sarasadat"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2620"]
[BlackElo "2494"]
[Annotator "TA"]
[PlyCount "131"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 16,131,6,11,49,13,56,3,93,77,92,105,121,118,110,113,144,129,171,164,158,
132,137,135,138,134,129,129,125,123,138,126,154,150,154,154,154,0,123,133,136,
136,153,135,156,156,185,182,179,143,196,189,189,202,200,166,251,184,277,184,
266,259,284,268,372,365,517,322,301,0,366,359,466,344,443,443,444,443,449,449,
449,0,448,448,443,420,521,436,519,446,531,487,538,458,591,587,539,523,491,509,
604,594,710,725,855,850,801,789,683,671,1096,1018,2312,1840,2154,1878,29983,
29984]} 1. Nf3 d5 2. b3 Nf6 3. Bb2 g6 4. c4 dxc4 5. bxc4 Bg7 6. g3 O-O 7. Bg2
c5 8. O-O Nc6 9. d3 e6 {[#] A05: Réti Opening: 1 Nf3 Nf6.} 10. Nbd2 $146 ({
Predecessor:} 10. Nc3 Qc7 11. Qd2 Qd8 12. Rfd1 Bd7 13. Rac1 Qe7 14. e3 Rac8 15.
Ba3 b6 16. d4 {0-1 (42) Zarubitski,V (2442)-Lu,S (2615) Tornelo INT 2020})
10... Qe7 11. Rb1 (11. Ne5 $14) 11... Rd8 (11... Qc7 $11) 12. Ne5 $16 Nxe5 13.
Bxe5 Ne8 {[#]} 14. Bxg7 Kxg7 15. Qa4 Nd6 16. Qa5 Nf5 17. Nb3 Nd4 18. Rfe1 ({
Resist} 18. Qxc5 $6 Nxe2+ 19. Kh1 Qf6 $16) 18... Nxb3 19. Rxb3 Rd7 20. Reb1 Rc7
21. h4 h5 22. Bf3 e5 23. Bd5 Qd7 24. Rb5 Qe7 25. Qa3 Kh7 26. Qa5 Kg7 $1 27. Kg2
Kh7 28. Qa3 Kg7 29. Ra5 a6 30. Rb6 Ra7 31. Qb2 Kh7 32. Ra3 {[%CAl Ba5a3,Ba3b3,
Bb3b1][%mdl 32]} Ra8 (32... a5 $16 {was necessary.} 33. Kh1 a4) 33. Rab3 $18
Ra7 34. Qc1 Kg7 35. Qe3 Ra8 (35... a5 $142 36. Rb2 a4) 36. Rb1 Ra7 (36... a5
$142 37. Kg1 a4) 37. Qd2 Ra8 (37... Bd7 $142 38. Qe3 (38. Bxb7 $2 Rcxb7 39. f3
Bc8 $19) 38... Bc8) 38. a4 {[%CAl Ba2a4,Ba4a5][%mdl 32]} Ra7 39. a5 Kh7 40. Qe3
Rd7 (40... f6 $142 41. Kg1 Kg7) 41. Qf3 Kg7 42. Qe3 $2 {[#]} ({White should
play} 42. Qe4 $18) 42... Rc7 $2 {[%mdl 8192]} (42... Kh7 $1 $11 {and Black has
nothing to worry.} 43. Kg1 Rc7) 43. f3 Rd7 44. Qg5 Qxg5 45. hxg5 Rc7 46. Kf2
Kf8 47. Ke3 Re7 48. Kf2 Rc7 $1 49. e4 Re7 50. Ke3 Ke8 51. Rd6 Be6 52. Rbb6 Bxd5
53. Rxd5 {[%mdl 4096] Endgame KRR-KRR} Ra8 54. Rxc5 Rd8 55. Rd5 Rc8 56. f4
exf4+ 57. Kxf4 Rcc7 58. c5 Re6 59. d4 Ree7 60. Rdd6 Kf8 61. e5 Ke8 62. Ke4 Kf8
63. Rd8+ Kg7 64. Rbd6 Kh7 65. Rb8 Red7 66. d5 {Weighted Error Value: White=0.
32/Black=0.52} 1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "14.4"]
[White "Badelka, Olga"]
[Black "Abdumalik, Zhansaya"]
[Result "1-0"]
[ECO "E60"]
[WhiteElo "2433"]
[BlackElo "2472"]
[Annotator "Shahid"]
[PlyCount "133"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,133,26,23,15,28,44,30,23,19,1,6,21,22,33,24,27,3,-11,14,29,17,19,23,
32,23,23,28,20,39,39,45,55,51,47,44,88,59,52,40,29,7,2,3,-2,-6,6,-1,13,12,6,0,
0,-32,-21,-13,12,7,10,0,0,0,-65,-55,36,36,38,37,212,191,201,199,204,198,204,
194,315,319,927,220,277,241,241,241,220,224,248,231,231,242,254,249,367,370,
529,505,911,911,920,614,615,646,809,804,835,838,847,690,717,634,652,586,610,
609,677,640,663,567,663,663,653,667,675,675,683,571,985,1015,1124,1286,1286,
800,1033,822,1156,1156]} 1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. Nf3 {
[%emt 0:00:00]} g6 {[%emt 0:00:00]} 3. g3 {[%emt 0:00:04]} Bg7 {[%emt 0:00:14]}
4. c4 {[%emt 0:00:04]} c5 {[%emt 0:00:07]} 5. Nc3 {[%emt 0:00:04]} cxd4 {
[%emt 0:00:18]} 6. Nxd4 {[%emt 0:00:02]} O-O {[%emt 0:00:03]} 7. Bg2 {[%emt 0:
00:03]} Qc7 {[%emt 0:00:00]} 8. Qd3 {[%emt 0:00:03]} Nc6 {[%emt 0:00:34]} 9.
O-O {[%emt 0:00:05]} Ne5 {[%emt 0:00:36]} 10. Qe3 {[%emt 0:00:02]} d6 {[%emt 0:
00:43]} 11. b3 {[%emt 0:00:16]} Qb6 {[%emt 0:00:48]} 12. Na4 {[%emt 0:01:17]}
Qc7 {[%emt 0:00:51]} 13. Bb2 {[%emt 0:00:15]} Bd7 {[%emt 0:00:08]} 14. Nc3 {
[%emt 0:00:08]} a6 {[%emt 0:00:08]} 15. h3 {[%emt 0:00:30]} Rfe8 {[%emt 0:00:
12]} 16. Rac1 {[%emt 0:00:22]} Qb6 {[%emt 0:00:24]} 17. Nd5 {[%emt 0:01:27]}
Qd8 {[%emt 0:00:24]} 18. Nxf6+ {[%emt 0:02:09]} Bxf6 {[%emt 0:00:45]} 19. f4 {
[%emt 0:00:03]} Nc6 {[%emt 0:00:01]} 20. Nxc6 {[%emt 0:00:01]} Bxc6 {[%emt 0:
00:19]} 21. Bxf6 {[%emt 0:00:12]} exf6 {[%emt 0:00:03]} 22. Qf2 {[%emt 0:00:37]
} Qa5 {[%emt 0:00:13]} 23. Rc2 {[%emt 0:00:23]} Rac8 {[%emt 0:00:40]} 24. Rd1 {
[%emt 0:00:29]} Re6 {[%emt 0:00:33]} 25. Rcd2 {[%emt 0:00:31]} Rce8 {[%emt 0:
00:19]} 26. Bf1 {[%emt 0:00:32]} Qb4 {[%emt 0:00:26]} 27. f5 {[%emt 0:00:49]}
Re5 {[%emt 0:01:28]} 28. fxg6 {[%emt 0:00:02]} hxg6 {[%emt 0:00:01]} 29. Rxd6 {
[%emt 0:00:17]} Rf5 {[%emt 0:00:15]} 30. Qd4 {[%emt 0:00:10]} Re4 {[%emt 0:00:
09]} 31. Rd8+ {[%emt 0:00:24]} Kg7 {[%emt 0:00:01]} 32. Qd6 {[%emt 0:00:09]}
Qb6+ {[%emt 0:00:28]} 33. Rd4 {[%emt 0:00:06]} Kh7 $4 {[%emt 0:00:48]} (33...
Qxd4+ 34. Qxd4 Rxd4 35. Rxd4 Rg5) 34. Qf8 $18 {[%emt 0:00:31]} Qxd4+ {[%emt 0:
00:01]} 35. Rxd4 {[%emt 0:00:02]} Rxd4 {[%emt 0:00:01]} 36. Qxf7+ {[%emt 0:00:
01]} Kh6 {[%emt 0:00:04]} 37. Qf8+ {[%emt 0:00:05]} Kg5 {[%emt 0:00:16]} 38.
Qh8 {[%emt 0:00:34]} Re5 {[%emt 0:00:37]} 39. Kf2 {[%emt 0:00:02]} Kf5 {
[%emt 0:00:06]} 40. g4+ {[%emt 0:00:15]} Ke6 {[%emt 0:00:05]} 41. Qg8+ {
[%emt 0:00:07]} Ke7 {[%emt 0:00:05]} 42. Qg7+ {[%emt 0:00:02]} Ke6 {[%emt 0:00:
02]} 43. Qg8+ {[%emt 0:00:02]} Ke7 {[%emt 0:00:03]} 44. Qxg6 {[%emt 0:00:04]}
Rf4+ {[%emt 0:00:03]} 45. Ke1 {[%emt 0:00:01]} Rd4 {[%emt 0:00:12]} 46. h4 {
[%emt 0:00:06]} Be8 {[%emt 0:00:02]} 47. Qg7+ {[%emt 0:00:03]} Bf7 {[%emt 0:00:
01]} 48. g5 {[%emt 0:00:05]} Ke8 {[%emt 0:00:11]} 49. Qxf6 {[%emt 0:00:05]}
Rde4 {[%emt 0:00:05]} 50. g6 {[%emt 0:00:01]} Bg8 {[%emt 0:00:01]} 51. Qh8 {
[%emt 0:00:16]} Kf8 {[%emt 0:00:03]} 52. Qf6+ {[%emt 0:00:08]} Ke8 {[%emt 0:00:
01]} 53. g7 {[%emt 0:00:00]} Kd7 {[%emt 0:00:02]} 54. Qf8 {[%emt 0:00:03]} Re8
{[%emt 0:00:01]} 55. Qf5+ {[%emt 0:00:14]} Kc7 {[%emt 0:00:01]} 56. h5 {
[%emt 0:00:06]} R4e6 {[%emt 0:00:01]} 57. Qf4+ {[%emt 0:00:04]} Kb6 {[%emt 0:
00:06]} 58. h6 {[%emt 0:00:02]} Bh7 {[%emt 0:00:00]} 59. Qd4+ {[%emt 0:00:05]}
Kc7 {[%emt 0:00:04]} 60. Qf4+ {[%emt 0:00:05]} Kb6 {[%emt 0:00:01]} 61. Qd4+ {
[%emt 0:00:01]} Kc7 {[%emt 0:00:00]} 62. a4 {[%emt 0:00:02]} Rd6 {[%emt 0:00:
06]} 63. Qf4 {[%emt 0:00:02]} Kc6 {[%emt 0:00:06]} 64. Bg2+ {[%emt 0:00:06]}
Kd7 {[%emt 0:00:01]} 65. Bd5 {[%emt 0:00:06]} Rg6 {[%emt 0:00:06]} 66. Qf7+ {
[%emt 0:00:06]} Re7 {[%emt 0:00:04]} 67. Qxg6 {[%emt 0:00:02]} 1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "14.5"]
[White "Lei, Tingjie"]
[Black "Mendonca, Leon Luke"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2505"]
[BlackElo "2549"]
[Annotator "Shahid"]
[PlyCount "124"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,124,23,17,44,45,85,63,48,39,44,22,40,14,48,39,39,42,40,35,32,25,34,12,
38,20,34,27,25,27,63,52,43,55,54,63,57,41,52,44,26,15,57,47,9,44,45,45,47,46,
47,47,47,14,22,27,20,18,13,10,0,3,0,0,0,6,-1,-7,12,0,0,-7,11,0,0,0,0,-50,-58,
-58,-49,-47,-47,-47,-55,-65,-55,-59,-50,-88,-72,-118,-102,-105,-98,-104,-105,
-100,-104,-101,-93,-106,-107,-135,-138,-104,-93,-96,-107,-247,-252,-239,-136,
-111,-130,-130,-135,-148,-133,-293,-293,-293,-296,-298,-314,-326,-328]} 1. e4 {
[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d6 {[%emt 0:00:09]}
3. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:01]} 4. Nxd4 {[%emt 0:00:00]} Nf6 {
[%emt 0:00:00]} 5. Nc3 {[%emt 0:00:00]} a6 {[%emt 0:00:02]} 6. a4 {[%emt 0:00:
01]} g6 {[%emt 0:00:45]} 7. Be2 {[%emt 0:00:02]} Bg7 {[%emt 0:00:03]} 8. O-O {
[%emt 0:00:01]} O-O {[%emt 0:00:03]} 9. Be3 {[%emt 0:00:01]} Nc6 {[%emt 0:00:
08]} 10. Qd2 {[%emt 0:00:01]} Bd7 {[%emt 0:00:49]} 11. Rfd1 {[%emt 0:00:03]}
Rc8 {[%emt 0:00:50]} 12. f3 {[%emt 0:00:02]} Nxd4 {[%emt 0:02:40]} 13. Bxd4 {
[%emt 0:00:03]} Be6 {[%emt 0:00:03]} 14. a5 {[%emt 0:01:53]} Bc4 {[%emt 0:00:
51]} 15. Ra4 {[%emt 0:00:35]} Bxe2 {[%emt 0:00:24]} 16. Qxe2 {[%emt 0:00:07]}
Qd7 {[%emt 0:00:51]} 17. Rb4 {[%emt 0:00:29]} Qc7 {[%emt 0:00:15]} 18. Bb6 {
[%emt 0:01:03]} Qc6 {[%emt 0:00:16]} 19. Rd2 {[%emt 0:01:21]} Rfe8 {[%emt 0:00:
18]} 20. Nd5 {[%emt 0:00:59]} Nd7 {[%emt 0:00:48]} 21. Be3 {[%emt 0:00:14]} e6
{[%emt 0:00:16]} 22. Nb6 {[%emt 0:00:12]} Nxb6 {[%emt 0:00:01]} 23. Rxb6 {
[%emt 0:00:01]} Qa4 {[%emt 0:00:18]} 24. c3 {[%emt 0:00:57]} d5 {[%emt 0:00:24]
} 25. Rxb7 {[%emt 0:00:09]} Qxa5 {[%emt 0:00:10]} 26. Bd4 {[%emt 0:00:56]}
Bxd4+ {[%emt 0:00:46]} 27. Rxd4 {[%emt 0:00:03]} Qc5 {[%emt 0:00:24]} 28. Qf2 {
[%emt 0:00:26]} dxe4 {[%emt 0:00:22]} 29. fxe4 {[%emt 0:00:48]} Rc7 {[%emt 0:
00:16]} 30. Rxc7 {[%emt 0:01:02]} Qxc7 {[%emt 0:00:00]} 31. Qf6 {[%emt 0:00:02]
} Rb8 {[%emt 0:00:08]} 32. Rd2 {[%emt 0:00:35]} Qb6+ {[%emt 0:00:04]} 33. Qf2 {
[%emt 0:00:17]} Qc6 {[%emt 0:00:07]} 34. Qf4 {[%emt 0:00:04]} Qb6+ {[%emt 0:00:
05]} 35. Qf2 {[%emt 0:00:13]} Qc6 {[%emt 0:00:03]} 36. Qf4 {[%emt 0:00:07]}
Qc5+ {[%emt 0:00:06]} 37. Qf2 {[%emt 0:00:03]} Qe5 {[%emt 0:00:06]} 38. Qd4 {
[%emt 0:00:11]} Qxd4+ {[%emt 0:00:03]} 39. cxd4 {[%emt 0:00:01]} Kf8 {[%emt 0:
00:01]} 40. Kf2 {[%emt 0:00:02]} Ke7 {[%emt 0:00:01]} 41. Rc2 {[%emt 0:00:04]}
Kd6 {[%emt 0:00:07]} 42. Ke3 {[%emt 0:00:07]} Rb3+ {[%emt 0:00:03]} 43. Kf4 {
[%emt 0:00:10]} f5 {[%emt 0:00:05]} 44. exf5 {[%emt 0:00:04]} gxf5 {[%emt 0:00:
04]} 45. Rc8 {[%emt 0:00:10]} (45. h3 Rd3 46. Rc4 Rd2) 45... Rxb2 {[%emt 0:00:
06]} 46. Rd8+ {[%emt 0:00:02]} Ke7 {[%emt 0:00:03]} 47. Rh8 {[%emt 0:00:02]}
Rxg2 {[%emt 0:00:03]} 48. Rxh7+ {[%emt 0:00:01]} Kd6 {[%emt 0:00:02]} 49. h4 {
[%emt 0:00:10]} Rg4+ {[%emt 0:00:08]} 50. Ke3 {[%emt 0:00:01]} Rg3+ {[%emt 0:
00:07]} 51. Ke2 {[%emt 0:00:12]} Kd5 {[%emt 0:00:06]} 52. Rd7+ {[%emt 0:00:01]}
Kc6 {[%emt 0:00:12]} 53. Ra7 {[%emt 0:00:03]} Rh3 {[%emt 0:00:03]} 54. Re7 {
[%emt 0:00:09]} Kd5 {[%emt 0:00:04]} 55. Rd7+ {[%emt 0:00:01]} Kc6 {[%emt 0:00:
10]} 56. Ra7 {[%emt 0:00:08]} Rxh4 {[%emt 0:00:04]} 57. Rxa6+ {[%emt 0:00:01]}
Kd5 {[%emt 0:00:01]} 58. Ra5+ {[%emt 0:00:07]} Kc4 {[%emt 0:00:09]} 59. Ra6 {
[%emt 0:00:12]} Re4+ {[%emt 0:00:08]} 60. Kf3 {[%emt 0:00:01]} Kxd4 {[%emt 0:
00:04]} 61. Ra4+ {[%emt 0:00:03]} Ke5 {[%emt 0:00:01]} 62. Ra5+ {[%emt 0:00:04]
} Kf6 {[%emt 0:00:01]} 0-1
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "14.6"]
[White "Yip, Carissa"]
[Black "Keymer, Vincent"]
[Result "0-1"]
[ECO "B97"]
[WhiteElo "2430"]
[BlackElo "2591"]
[Annotator "ChessBase"]
[PlyCount "86"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,76,23,17,45,45,81,64,52,21,42,26,55,51,68,28,46,-2,24,16,11,11,110,
-46,-13,-29,19,-20,46,73,61,54,133,133,132,118,115,74,68,29,55,5,52,39,30,36,
25,9,61,20,33,0,52,-63,35,14,50,72,80,43,37,2,15,-16,10,3,25,-16,4,-82,-67,
-139,-133,-154,-158,-192,-159,-154,-166]} 1. e4 {[%emt 0:00:00]} c5 {[%emt 0:
00:00]} 2. Nf3 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:00]} cxd4
{[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 5. Nc3 {[%emt 0:
00:00]} a6 {[%emt 0:00:00]} 6. Bg5 {[%emt 0:00:05]} e6 {[%emt 0:00:00]} 7. f4 {
[%emt 0:00:03]} Qb6 {[%emt 0:00:01]} 8. Qd2 {[%emt 0:00:15]} Qxb2 {[%emt 0:00:
02]} 9. Rb1 {[%emt 0:00:01]} Qa3 {[%emt 0:00:02]} 10. f5 {[%emt 0:00:03]} Be7 {
[%emt 0:00:15]} 11. Be2 {[%emt 0:00:15]} O-O {[%emt 0:02:42]} 12. Be3 {[%emt 0:
00:18]} Qa5 {[%emt 0:01:09]} 13. g4 {[%emt 0:00:33]} Qd8 {[%emt 0:01:01]} 14.
g5 {[%emt 0:00:06]} Nfd7 {[%emt 0:00:11]} 15. Rg1 {[%emt 0:01:05]} Nc6 {
[%emt 0:00:39]} 16. f6 {[%emt 0:02:05]} Nxf6 {[%emt 0:00:01]} 17. gxf6 {
[%emt 0:00:01]} Bxf6 {[%emt 0:00:01]} 18. Nf3 {[%emt 0:00:56]} b5 {[%emt 0:00:
32]} 19. Bg5 {[%emt 0:00:28]} Bb7 {[%emt 0:00:15]} 20. Nd1 {[%emt 0:00:18]} Rc8
{[%emt 0:00:48]} 21. Nf2 {[%emt 0:00:58]} Bxg5 {[%emt 0:00:41]} 22. Qxg5 {
[%emt 0:00:32]} Qxg5 {[%emt 0:00:05]} 23. Rxg5 {[%emt 0:00:01]} Ba8 {[%emt 0:
00:21]} 24. Kd2 {[%emt 0:00:12]} f6 {[%emt 0:00:31]} 25. Rgg1 {[%emt 0:00:26]}
Rfd8 {[%emt 0:00:05]} 26. Rgd1 {[%emt 0:00:25]} Rc7 {[%emt 0:00:17]} 27. Ke1 {
[%emt 0:00:13]} Kf7 {[%emt 0:00:08]} 28. c4 {[%emt 0:00:29]} b4 {[%emt 0:00:04]
} 29. Nd3 {[%emt 0:00:23]} a5 {[%emt 0:00:02]} 30. c5 {[%emt 0:00:08]} d5 {
[%emt 0:00:24]} 31. exd5 {[%emt 0:00:10]} Rxd5 {[%emt 0:00:00]} 32. Rbc1 {
[%emt 0:00:12]} Ne7 {[%emt 0:00:10]} 33. Rc4 {[%emt 0:00:36]} Bb7 {[%emt 0:00:
19]} 34. Rd4 {[%emt 0:00:08]} e5 {[%emt 0:00:02]} 35. Rxd5 {[%emt 0:00:36]}
Nxd5 {[%emt 0:00:00]} 36. c6 {[%emt 0:00:28]} Bxc6 {[%emt 0:00:15]} 37. Ndxe5+
{[%emt 0:00:20]} fxe5 {[%emt 0:00:03]} 38. Bc4 {[%emt 0:00:01]} Ke6 {[%emt 0:
00:11]} 39. Kf2 {[%emt 0:00:05]} Bb7 {[%emt 0:00:41]} 40. Bb3 {[%emt 0:00:06]}
a4 {[%emt 0:00:08]} 41. Bxa4 {[%emt 0:00:01]} Rf7 {[%emt 0:00:09]} 42. Bb3 {
[%emt 0:00:04]} e4 {[%emt 0:00:03]} 43. Re1 {[%emt 0:00:12]} Rxf3+ {[%emt 0:00:
02]} 0-1
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "14.7"]
[White "Praggnanandhaa R"]
[Black "Gukesh D"]
[Result "1/2-1/2"]
[ECO "D32"]
[WhiteElo "2608"]
[BlackElo "2578"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 13,92,22,31,29,24,24,25,32,38,28,74,68,73,54,60,66,80,13,22,14,31,27,23,
40,96,93,160,160,164,146,144,155,136,141,145,146,137,134,129,135,142,142,237,
239,320,328,302,283,527,511,507,489,516,431,380,55,58,63,67,81,79,0,0,0,8,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 c5 5. cxd5
exd5 6. Bg5 Be6 7. Bxf6 Qxf6 8. e4 {D32: Tarrasch Defence: Sidelines and lines
without g3.} dxe4 9. Nxe4 Qf4 10. Bb5+ {White has an edge.} Nc6 11. Qe2 {
Strongly threatening d5!} O-O-O 12. Bxc6 (12. dxc5 Bd5 $15) 12... bxc6 13. O-O
$1 ({Weaker is} 13. dxc5 Bd5 $15) 13... Bd5 14. Rfe1 ({But not} 14. Nxc5 Bxc5
15. Qa6+ (15. dxc5 Bc4 $17) 15... Kb8 $15) 14... cxd4 {White should prevent ...
Bb4.} 15. Qa6+ (15. g3 $16 Qc7 16. Nxd4) 15... Kb8 $11 16. Nxd4 Bb4 $1 {
[%CAl Rb4e1] [#]} 17. g3 $1 Qc7 18. Nc3 {[#]} Bxc3 $146 (18... Qb7 $14 19. Qa4
Bh1 20. Kxh1 Rxd4) ({Predecessor:} 18... Qb7 19. Qa4 Bh1 20. Kxh1 Rxd4 21. Qc2
h5 22. Qf5 Ka8 23. a3 Bxc3 24. bxc3 Rd5 {1/2-1/2 (36) Nozicka,V (2018)-Green,M
(2047) ICCF email 2017}) 19. bxc3 $16 {[%CAl Bb2c3,Bc3c4][%mdl 32] Threatens
to win with c4.} Rhe8 {[#]} ({Black should play} 19... Ka8) 20. c4 $1 $36 {
[%CAl Rc4d5][%mdl 2048] White has strong initiative.} Rxe1+ 21. Rxe1 Bh1 22.
Kxh1 Rxd4 {[%mdl 4096] Endgame KQR-KQR} 23. Re8+ Rd8 24. Rxd8+ {[%mdl 64]
Overworked Piece} Qxd8 25. Qxc6 {KQ-KQ} Qc7 26. Qd5 Qb7 {[#]} 27. Kg2 $1 Qc7 (
27... Qe7 $16 {was worth a try.} 28. Qd4 g6) 28. Kf3 $18 g6 29. c5 Kc8 30. h4
h5 (30... a5 31. Kg4 f6) 31. Ke4 Qe7+ 32. Kd3 {aiming for Qa8+.} Kc7 33. f4 f6
34. f5 $2 (34. Kd4 $18 Qf8 35. f5 gxf5 36. Qxf5) 34... gxf5 $14 35. Qxf5 Qe1 {
And now ...Qb1+ would win.} 36. Qf4+ Kc8 37. Kc4 (37. Qf3 $16) 37... Qe2+ $11 {
The position is equal.} 38. Kb3 (38. Kd5 {seems wilder.} Qxa2+ 39. Kd6 Qf7 40.
Qf5+ Kd8 41. g4) 38... Qb5+ (38... Qd3+ {is more complex.} 39. Kb2 f5 40. c6
Qb5+ 41. Ka1 Qc5) 39. Qb4 Qd3+ 40. Qc3 Qb5+ 41. Ka3 Qa6+ 42. Kb2 Qe2+ 43. Qc2
Qe5+ 44. Qc3 {Black must now prevent Qxe5.} Qe2+ 45. Ka3 Qa6+ 46. Kb2 Qe2+ {
White really could win this. Weighted Error Value: White=0.23/Black=0.16}
1/2-1/2
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "14.8"]
[White "Salimova, Nurgyul"]
[Black "Bjerre, Jonas Buhl"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "2397"]
[BlackElo "2550"]
[Annotator "Shahid"]
[PlyCount "148"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,148,23,19,28,26,28,18,16,-27,6,17,23,-10,0,-3,36,7,1,1,1,10,35,40,15,
29,25,15,18,19,20,27,23,23,26,15,20,-1,36,47,63,31,94,107,111,108,82,68,81,61,
90,38,4,10,-5,-40,40,38,40,9,79,68,47,45,57,42,72,43,81,59,43,0,30,14,180,143,
172,121,250,266,254,262,283,311,338,283,342,319,393,369,444,367,389,387,390,
394,985,310,325,282,309,307,302,302,302,255,269,77,45,42,97,106,106,106,134,
125,129,137,129,145,144,113,107,93,97,100,138,133,133,128,130,130,130,91,93,91,
95,93,100,93,130,95,121,121,117,123,115,112,110,85,124]} 1. d4 {[%emt 0:00:00]}
Nf6 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:01]} d5 {[%emt 0:00:00]} 3. c4 {
[%emt 0:00:04]} e6 {[%emt 0:00:00]} 4. g3 {[%emt 0:00:01]} Bb4+ {[%emt 0:00:01]
} 5. Bd2 {[%emt 0:00:03]} Be7 {[%emt 0:00:01]} 6. Bg2 {[%emt 0:00:07]} O-O {
[%emt 0:00:01]} 7. O-O {[%emt 0:00:23]} c6 {[%emt 0:00:02]} 8. Bf4 {[%emt 0:00:
10]} dxc4 {[%emt 0:00:03]} 9. Ne5 {[%emt 0:00:24]} Nd5 {[%emt 0:00:01]} 10.
Nxc4 {[%emt 0:00:03]} Nxf4 {[%emt 0:00:01]} 11. gxf4 {[%emt 0:00:01]} Qc7 {
[%emt 0:00:01]} 12. e3 {[%emt 0:00:15]} Nd7 {[%emt 0:00:11]} 13. Nc3 {[%emt 0:
00:16]} b6 {[%emt 0:00:24]} 14. Rc1 {[%emt 0:00:40]} Bb7 {[%emt 0:00:06]} 15.
Qf3 {[%emt 0:00:17]} Rab8 {[%emt 0:01:24]} 16. Qg3 {[%emt 0:00:27]} f5 {
[%emt 0:01:22]} 17. Ne5 {[%emt 0:00:31]} Nxe5 {[%emt 0:00:35]} 18. dxe5 {
[%emt 0:00:07]} Rbd8 {[%emt 0:01:09]} 19. Nb5 {[%emt 0:00:30]} Qd7 {[%emt 0:00:
10]} 20. Nd4 {[%emt 0:00:24]} c5 {[%emt 0:00:53]} 21. Nxe6 {[%emt 0:03:02]}
Qxe6 {[%emt 0:00:43]} 22. Bxb7 {[%emt 0:00:01]} Rd2 {[%emt 0:00:15]} 23. Ba6 {
[%emt 0:00:29]} Kh8 {[%emt 0:00:40]} 24. Bc4 {[%emt 0:00:06]} Qc6 {[%emt 0:00:
14]} 25. Rfd1 {[%emt 0:01:17]} Rxb2 {[%emt 0:00:35]} 26. Bd5 {[%emt 0:00:02]}
Qh6 {[%emt 0:00:04]} 27. Rb1 {[%emt 0:00:57]} Rxb1 {[%emt 0:01:27]} 28. Rxb1 {
[%emt 0:00:02]} Rd8 {[%emt 0:00:01]} 29. Qg2 {[%emt 0:00:12]} Qg6 {[%emt 0:00:
37]} 30. Qxg6 {[%emt 0:00:44]} hxg6 {[%emt 0:00:03]} 31. Bf7 {[%emt 0:00:09]}
Kh7 {[%emt 0:00:31]} 32. Kg2 {[%emt 0:00:08]} Rd2 {[%emt 0:00:06]} 33. h4 {
[%emt 0:00:06]} Kh6 {[%emt 0:00:12]} 34. Rh1 {[%emt 0:00:35]} (34. Rg1) 34...
b5 {[%emt 0:00:22]} 35. Rh3 {[%emt 0:00:08]} (35. Rg1) 35... c4 {[%emt 0:00:14]
} 36. Rg3 {[%emt 0:00:03]} c3 {[%emt 0:00:14]} 37. Rxg6+ {[%emt 0:00:03]} Kh7 {
[%emt 0:00:01]} 38. Rc6 {[%emt 0:00:06]} c2 {[%emt 0:00:08]} 39. Bg6+ {[%emt 0:
00:04]} Kg8 {[%emt 0:00:02]} 40. Rc8+ {[%emt 0:00:07]} Rd8 {[%emt 0:00:15]} 41.
Rxc2 {[%emt 0:00:03]} Bxh4 {[%emt 0:00:02]} 42. Bxf5 {[%emt 0:00:04]} b4 {
[%emt 0:00:06]} 43. Be6+ {[%emt 0:00:05]} Kh8 {[%emt 0:00:04]} 44. Kf3 {
[%emt 0:00:06]} g6 {[%emt 0:00:05]} 45. Rc1 {[%emt 0:00:08]} Kg7 {[%emt 0:00:
08]} 46. Rc7+ {[%emt 0:00:02]} Kh6 {[%emt 0:00:01]} 47. Rxa7 {[%emt 0:00:04]}
Rd2 {[%emt 0:00:01]} 48. Ra8 {[%emt 0:00:10]} Rxf2+ {[%emt 0:00:05]} 49. Kg4 {
[%emt 0:00:06]} (49. Ke4) 49... Be7 {[%emt 0:00:04]} 50. Rh8+ {[%emt 0:00:03]}
Kg7 {[%emt 0:00:03]} 51. Rg8+ {[%emt 0:00:01]} Kh6 {[%emt 0:00:02]} 52. Re8 {
[%emt 0:00:08]} Bc5 {[%emt 0:00:01]} 53. f5 {[%emt 0:00:10]} (53. e4) 53...
gxf5+ {[%emt 0:00:03]} 54. Bxf5 {[%emt 0:00:01]} Bxe3 {[%emt 0:00:02]} 55. Be6
{[%emt 0:00:08]} Bd4 {[%emt 0:00:05]} 56. Bb3 {[%emt 0:00:05]} Re2 {[%emt 0:00:
06]} 57. Kf5 {[%emt 0:00:03]} Kg7 {[%emt 0:00:04]} 58. Rg8+ {[%emt 0:00:03]}
Kh7 {[%emt 0:00:01]} 59. Re8 {[%emt 0:00:06]} Kg7 {[%emt 0:00:04]} 60. e6 {
[%emt 0:00:08]} Bc5 {[%emt 0:00:03]} 61. Rc8 {[%emt 0:00:04]} Be7 {[%emt 0:00:
04]} 62. Rc7 {[%emt 0:00:03]} Kf8 {[%emt 0:00:01]} 63. Rb7 {[%emt 0:00:04]} Re1
{[%emt 0:00:03]} 64. Kg6 {[%emt 0:00:06]} Rg1+ {[%emt 0:00:03]} 65. Kf5 {
[%emt 0:00:01]} Re1 {[%emt 0:00:01]} 66. Rb8+ {[%emt 0:00:04]} Kg7 {[%emt 0:00:
01]} 67. Re8 {[%emt 0:00:02]} Bc5 {[%emt 0:00:03]} 68. Rc8 {[%emt 0:00:09]} Be7
{[%emt 0:00:01]} 69. Rc2 {[%emt 0:00:04]} Kf8 {[%emt 0:00:13]} 70. Rg2 {
[%emt 0:00:04]} Re3 {[%emt 0:00:11]} 71. Rh2 {[%emt 0:00:09]} Kg7 {[%emt 0:00:
07]} 72. Rg2+ {[%emt 0:00:01]} Kf8 {[%emt 0:00:02]} 73. Kf4 {[%emt 0:00:04]}
Re1 {[%emt 0:00:03]} 74. Kf5 {[%emt 0:00:06]} Re3 {[%emt 0:00:04]} 1/2-1/2
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "14.10"]
[White "Liang, Awonder"]
[Black "Yoo, Christopher Woojin"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "2592"]
[BlackElo "2455"]
[Annotator "Shahid"]
[PlyCount "69"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,69,23,17,45,65,49,43,43,38,44,44,41,1,-2,-5,2,0,43,-3,9,12,57,57,61,
-19,15,-4,80,54,94,116,85,106,112,78,116,116,106,123,179,135,155,156,126,112,
215,140,144,153,230,230,194,169,178,182,271,267,415,423,643,656,659,659,659,
676,733,793,1240,1203,1501,1501]} 1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2.
Nf3 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:00]} Nc6 {[%emt 0:
00:01]} 4. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:07]} 5. Nxd4 {[%emt 0:00:01]}
Nf6 {[%emt 0:00:18]} 6. Nxc6 {[%emt 0:00:07]} bxc6 {[%emt 0:00:00]} 7. Bd3 {
[%emt 0:00:01]} d5 {[%emt 0:00:04]} 8. O-O {[%emt 0:00:01]} Be7 {[%emt 0:00:01]
} 9. e5 {[%emt 0:00:16]} Nd7 {[%emt 0:00:03]} 10. Re1 {[%emt 0:00:02]} c5 {
[%emt 0:01:21]} 11. Qg4 {[%emt 0:00:10]} g6 {[%emt 0:00:11]} 12. Bh6 {[%emt 0:
00:10]} c4 {[%emt 0:00:46]} 13. Bf1 {[%emt 0:00:02]} Bf8 $6 {[%emt 0:01:08]} (
13... Qa5) 14. Bxf8 {[%emt 0:00:36]} Kxf8 {[%emt 0:00:03]} 15. b3 {[%emt 0:00:
01]} cxb3 {[%emt 0:02:11]} 16. axb3 {[%emt 0:00:00]} Kg7 {[%emt 0:00:16]} 17.
Nb5 {[%emt 0:00:14]} a6 {[%emt 0:00:38]} 18. Qf4 {[%emt 0:00:10]} Qe7 {[%emt 0:
00:55]} 19. Nd6 {[%emt 0:00:19]} a5 {[%emt 0:00:51]} 20. c4 {[%emt 0:01:41]}
dxc4 {[%emt 0:00:13]} 21. bxc4 {[%emt 0:00:59]} a4 {[%emt 0:00:07]} 22. Ra3 {
[%emt 0:00:15]} Ra5 {[%emt 0:00:46]} 23. Qd4 {[%emt 0:00:06]} Rd8 {[%emt 0:00:
39]} 24. Qc3 {[%emt 0:00:29]} Ra6 {[%emt 0:00:23]} 25. Qb4 {[%emt 0:01:19]} Kg8
{[%emt 0:00:43]} 26. Rxa4 {[%emt 0:00:06]} Rxa4 {[%emt 0:00:04]} 27. Qxa4 {
[%emt 0:00:01]} Nxe5 {[%emt 0:00:07]} 28. Nxc8 {[%emt 0:00:03]} Qg5 {[%emt 0:
00:03]} 29. Rxe5 {[%emt 0:00:05]} Qc1 {[%emt 0:00:17]} 30. Ne7+ {[%emt 0:00:12]
} Kg7 {[%emt 0:00:05]} 31. c5 {[%emt 0:00:06]} Rd1 {[%emt 0:00:03]} 32. Qb5 {
[%emt 0:00:01]} Qf4 {[%emt 0:00:08]} 33. Re3 {[%emt 0:00:08]} Rd2 {[%emt 0:00:
07]} 34. Rf3 {[%emt 0:00:01]} Qg5 {[%emt 0:00:09]} 35. Qe8 {[%emt 0:00:03]} 1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "15.1"]
[White "Yoo, Christopher Woojin"]
[Black "Zhu, Jiner"]
[Result "1/2-1/2"]
[ECO "C84"]
[WhiteElo "2455"]
[BlackElo "2459"]
[Annotator "TA"]
[PlyCount "148"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 20,148,17,14,13,20,16,16,12,12,14,12,60,0,10,0,0,0,0,0,8,2,4,8,27,0,6,
10,14,0,0,-5,-1,-15,-3,-3,0,0,-2,-38,-30,-28,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,22,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2.
Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d4 exd4 6. O-O Be7 7. e5 Ne4 8. Nxd4 Nxd4 9.
Qxd4 Nc5 10. Nc3 O-O 11. Bb3 d6 {C84: Closed Ruy Lopez: Unusual White 6th
moves.} 12. Bf4 dxe5 13. Qxe5 Bd6 14. Qd4 Bxf4 15. Qxf4 Nxb3 16. axb3 (16. Rad1
$5 {[%CAl Rd1d8]} Qf6 17. Qxf6 gxf6 18. cxb3 $14) 16... Be6 17. Rfe1 {[#]} Qd7
$146 ({Predecessor:} 17... Qd6 18. Qxd6 cxd6 19. Rad1 Rfd8 20. Re2 Rac8 21.
Red2 Rc6 22. f3 Kf8 23. g4 Ke7 {0-1 (49) Izbinsky,S-Romanovsky,A St Petersburg
1906}) 18. Rad1 {[%CAl Ba1d1,Bd1d3,Bd3g3][%mdl 32]} Qc6 19. Rd3 Rad8 20. Rg3 f6
21. h4 Kh8 22. Rge3 Rfe8 23. Qa4 Bd7 24. Rxe8+ Rxe8 25. Rxe8+ Bxe8 26. Qb4 {
[%CAl Rb4f8] [#]} (26. Qc4 {is interesting.} Bg6 27. Nd5 Bxc2 28. Nxc7 Bxb3 29.
Qxc6 bxc6 30. Nxa6 g5 31. hxg5 fxg5 32. f3) 26... Kg8 27. Qe7 Qd7 28. Qe4 c6
29. Qf4 (29. Na4 {feels hotter.} Bf7 30. Nb6 Qd1+ 31. Kh2 h6 32. Nc4) 29... Bg6
30. Ne4 Bxe4 (30... Qd1+ {seems wilder.} 31. Kh2 h5 32. Nc5 Bxc2 33. b4 b6) 31.
Qxe4 $11 {[%mdl 4096] Endgame KQ-KQ. The position is equal.} h6 (31... a5 {
is interesting.} 32. Qc4+ Kh8 33. Qc5 h6 34. g3 Kh7) 32. g3 Kf7 33. Kg2 Qd6 34.
b4 Qd7 35. h5 Qd6 36. c3 Qd7 37. g4 Qd6 38. Qg6+ Kf8 39. Qf5 Kf7 40. Qe4 Qd7
41. Qf4 Qd5+ 42. Kg3 Qd3+ 43. f3 Qd7 44. Qc4+ Kf8 45. Qf4 Kf7 46. Kf2 Kf8 47.
Ke3 Qe6+ 48. Qe4 Qd6 49. Qf5 {Threatens to win with Qc8+.} Qe7+ 50. Kf2 Kf7 51.
Qg6+ Kf8 52. Qd3 Qc7 53. Ke3 Qe5+ 54. Qe4 {[#] Hoping for Qxe5.} Qd6 55. Qd4
Qe6+ 56. Kf2 Qb3 57. Qd8+ Kf7 58. Qd7+ Kg8 59. Qe8+ Kh7 60. Qg6+ Kh8 61. Qe8+
Kh7 62. Qe2 Kh8 63. Kg3 Qf7 64. Qe4 Qb3 65. Qe2 Kh7 66. f4 Qd5 67. Qf3 Qd2 68.
Qf2 Qd3+ 69. Kg2 Qe4+ 70. Kg3 Qd3+ 71. Qf3 Qc2 72. Qg2 Qd3+ 73. Qf3 Qc2 74. Qf2
Qd3+ {Weighted Error Value: White=0.04/Black=0.03} 1/2-1/2
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "15.2"]
[White "Shuvalova, Polina"]
[Black "Liang, Awonder"]
[Result "0-1"]
[ECO "E97"]
[WhiteElo "2476"]
[BlackElo "2592"]
[Annotator "ChessBase"]
[PlyCount "70"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,70,23,19,26,10,44,44,45,40,36,37,41,31,41,28,72,66,58,53,50,43,50,48,
84,31,31,-1,17,17,-5,-12,21,-55,-69,-31,-46,-47,-57,-17,-18,-19,8,-1,24,-26,13,
17,19,24,52,50,40,-92,-78,-95,-111,-109,-111,-102,-109,-111,-116,-126,-117,
-108,-125,-173,-145,-152,-145,-471,-504]} 1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:
00:00]} 2. c4 {[%emt 0:00:00]} g6 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:00]} Bg7
{[%emt 0:00:00]} 4. e4 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 5. Nf3 {[%emt 0:00:
00]} O-O {[%emt 0:00:00]} 6. Be2 {[%emt 0:00:01]} e5 {[%emt 0:00:01]} 7. O-O {
[%emt 0:00:01]} Nc6 {[%emt 0:00:01]} 8. d5 {[%emt 0:00:01]} Ne7 {[%emt 0:00:01]
} 9. Bg5 {[%emt 0:00:01]} h6 {[%emt 0:00:11]} 10. Bd2 {[%emt 0:00:03]} a5 {
[%emt 0:00:59]} 11. Rc1 {[%emt 0:00:13]} c5 {[%emt 0:00:46]} 12. dxc6 {[%emt 0:
00:46]} bxc6 {[%emt 0:00:02]} 13. c5 {[%emt 0:00:21]} d5 {[%emt 0:00:06]} 14.
exd5 {[%emt 0:00:43]} Nfxd5 {[%emt 0:00:02]} 15. Bc4 {[%emt 0:02:42]} f5 {
[%emt 0:00:46]} 16. Qe2 {[%emt 0:00:24]} e4 {[%emt 0:00:15]} 17. Ne1 {[%emt 0:
00:02]} Kh7 {[%emt 0:00:09]} 18. Nc2 {[%emt 0:00:06]} Be6 {[%emt 0:00:48]} 19.
f3 {[%emt 0:01:16]} Nxc3 {[%emt 0:02:00]} 20. Bxc3 {[%emt 0:00:05]} Bxc3 {
[%emt 0:00:03]} 21. Bxe6 {[%emt 0:00:49]} Qd2 {[%emt 0:00:50]} 22. Rce1 {
[%emt 0:01:34]} Qxe2 {[%emt 0:01:18]} 23. Rxe2 {[%emt 0:00:01]} Bxb2 {[%emt 0:
00:01]} 24. fxe4 {[%emt 0:00:09]} f4 {[%emt 0:00:00]} 25. e5 {[%emt 0:00:07]}
g5 {[%emt 0:00:15]} 26. a4 {[%emt 0:00:33]} Ng6 {[%emt 0:00:15]} 27. Rfe1 {
[%emt 0:00:34]} Rae8 {[%emt 0:00:51]} 28. Bd7 {[%emt 0:00:18]} Rxe5 {[%emt 0:
00:01]} 29. Bxc6 {[%emt 0:00:02]} Rxc5 {[%emt 0:00:08]} 30. Be4 {[%emt 0:00:56]
} Kg7 {[%emt 0:00:02]} 31. Rd1 {[%emt 0:00:04]} Ne5 {[%emt 0:00:25]} 32. h3 {
[%emt 0:00:23]} Rc4 {[%emt 0:00:31]} 33. Ne1 {[%emt 0:00:14]} Bd4+ {[%emt 0:00:
11]} 34. Kh2 {[%emt 0:00:01]} Be3 {[%emt 0:00:02]} 35. Rd5 {[%emt 0:00:17]}
Rxe4 {[%emt 0:00:02]} 0-1
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "15.4"]
[White "Gukesh D"]
[Black "Salimova, Nurgyul"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2578"]
[BlackElo "2397"]
[Annotator "Shahid"]
[PlyCount "133"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,133,23,17,67,61,63,69,70,46,45,33,40,10,3,10,1,-23,30,27,50,29,51,56,
95,57,139,60,95,93,90,101,103,103,100,98,98,97,97,104,103,60,112,96,159,133,
169,180,181,175,181,110,121,119,155,136,139,159,129,117,115,127,235,136,193,
136,195,205,255,170,-22,74,-17,-65,-80,-350,242,-366,0,-311,118,114,126,156,
154,148,153,145,134,133,179,109,143,139,182,179,231,198,198,143,152,202,222,
147,151,151,201,74,93,64,40,49,69,67,76,93,96,88,121,123,337,358,303,144,177,
104,668,853,854,977,1081,1071,29987,29988,29991,29992]} 1. e4 {[%emt 0:00:00]}
c6 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 3. e5 {[%emt 0:
00:00]} Bf5 {[%emt 0:00:02]} 4. Nf3 {[%emt 0:00:00]} e6 {[%emt 0:00:01]} 5. Be2
{[%emt 0:00:01]} Ne7 {[%emt 0:00:02]} 6. c3 {[%emt 0:00:04]} Nd7 {[%emt 0:00:
31]} 7. O-O {[%emt 0:00:09]} Ng6 {[%emt 0:00:15]} 8. Ne1 {[%emt 0:00:02]} h5 {
[%emt 0:00:41]} 9. Nc2 {[%emt 0:00:03]} c5 {[%emt 0:02:07]} 10. Ne3 {[%emt 0:
00:17]} Bxb1 {[%emt 0:00:07]} (10... Ne7) 11. Rxb1 {[%emt 0:00:02]} Qb6 {
[%emt 0:00:20]} 12. Bxh5 {[%emt 0:00:41]} O-O-O {[%emt 0:00:41]} 13. Re1 {
[%emt 0:02:50]} (13. Bxg6 fxg6 14. b4) 13... cxd4 {[%emt 0:00:27]} 14. cxd4 {
[%emt 0:00:04]} Bb4 {[%emt 0:00:02]} 15. Rf1 {[%emt 0:00:09]} Nf4 {[%emt 0:01:
07]} 16. Bf3 {[%emt 0:01:05]} Kb8 {[%emt 0:00:15]} 17. Nc2 {[%emt 0:00:27]} Ng6
{[%emt 0:00:18]} 18. Nxb4 {[%emt 0:00:40]} Qxb4 {[%emt 0:00:00]} 19. g3 {
[%emt 0:00:03]} Ne7 {[%emt 0:00:52]} 20. Qd3 {[%emt 0:00:13]} Nf5 {[%emt 0:01:
03]} 21. Rd1 {[%emt 0:00:03]} f6 {[%emt 0:00:13]} 22. exf6 {[%emt 0:00:23]}
gxf6 {[%emt 0:00:09]} 23. Bf4+ {[%emt 0:00:13]} Ka8 {[%emt 0:00:01]} 24. Bg4 {
[%emt 0:00:07]} Ng7 {[%emt 0:00:24]} 25. Rbc1 {[%emt 0:00:55]} e5 {[%emt 0:00:
54]} 26. Bd2 {[%emt 0:00:12]} Qd6 {[%emt 0:00:20]} 27. Qb3 {[%emt 0:01:17]} f5
{[%emt 0:00:28]} 28. dxe5 {[%emt 0:00:17]} Nxe5 {[%emt 0:00:04]} 29. Be2 {
[%emt 0:00:02]} Ne6 {[%emt 0:00:08]} 30. Ba5 {[%emt 0:00:16]} Nf4 {[%emt 0:00:
33]} 31. Qe3 {[%emt 0:01:35]} Nh3+ {[%emt 0:00:17]} 32. Kf1 {[%emt 0:00:07]}
Rde8 {[%emt 0:00:07]} 33. Bc7 {[%emt 0:00:04]} Qf6 {[%emt 0:00:06]} 34. Qd4 {
[%emt 0:00:09]} f4 {[%emt 0:00:07]} 35. Bxe5 {[%emt 0:00:04]} (35. Rd3 fxg3 36.
Rxg3) 35... Rxe5 {[%emt 0:00:02]} 36. Rc5 {[%emt 0:00:14]} fxg3 {[%emt 0:00:07]
} 37. hxg3 {[%emt 0:00:03]} Ng5 {[%emt 0:00:05]} (37... Nxf2 38. Qxe5 Qxe5 39.
Rcxd5 Qb8 (39... Rh1+ 40. Kg2 Rg1+ (40... Qe4+ $4 41. Bf3) 41. Kxg1 Qxg3+ 42.
Kf1 a6) 40. Kxf2 Rh2+ $19) 38. Qh4 {[%emt 0:00:07]} Rf8 {[%emt 0:00:03]} 39.
Qf4 {[%emt 0:00:03]} Qe7 {[%emt 0:00:04]} (39... Rf5) 40. Rdc1 {[%emt 0:00:02]}
b6 {[%emt 0:00:09]} 41. Qxf8+ {[%emt 0:00:04]} Qxf8 {[%emt 0:00:02]} 42. Rc8+ {
[%emt 0:00:01]} Qxc8 {[%emt 0:00:01]} 43. Rxc8+ {[%emt 0:00:00]} Kb7 {[%emt 0:
00:00]} 44. Rc2 {[%emt 0:00:02]} Ne6 {[%emt 0:00:08]} 45. Rd2 {[%emt 0:00:02]}
Kc6 {[%emt 0:00:09]} 46. f4 {[%emt 0:00:04]} Re3 {[%emt 0:00:02]} 47. Kf2 {
[%emt 0:00:01]} d4 {[%emt 0:00:02]} 48. Bf3+ {[%emt 0:00:02]} Kc5 {[%emt 0:00:
05]} 49. a3 {[%emt 0:00:18]} Rb3 {[%emt 0:00:15]} 50. Bd1 {[%emt 0:00:08]} Re3
{[%emt 0:00:02]} 51. Bg4 {[%emt 0:00:08]} Nc7 {[%emt 0:00:06]} 52. Be2 {
[%emt 0:00:06]} Ne6 {[%emt 0:00:04]} 53. b4+ {[%emt 0:00:04]} Kd5 {[%emt 0:00:
07]} 54. Rc2 {[%emt 0:00:17]} Rxa3 {[%emt 0:00:02]} 55. Bc4+ {[%emt 0:00:04]}
Kd6 {[%emt 0:00:02]} 56. Rd2 {[%emt 0:00:01]} Rc3 {[%emt 0:00:14]} (56... Ra4
57. Bxe6 (57. Rb2 a5) 57... Kxe6 58. Rxd4) 57. Bxe6 {[%emt 0:00:04]} Kxe6 {
[%emt 0:00:00]} 58. Rxd4 {[%emt 0:00:00]} Kf5 {[%emt 0:00:05]} 59. Rd5+ {
[%emt 0:00:02]} Kg4 {[%emt 0:00:08]} 60. Rg5+ {[%emt 0:00:04]} Kh3 {[%emt 0:00:
01]} 61. b5 {[%emt 0:00:01]} Rb3 {[%emt 0:00:06]} 62. Rg7 {[%emt 0:00:15]} Rxb5
{[%emt 0:00:05]} 63. Rh7+ {[%emt 0:00:02]} Kg4 {[%emt 0:00:02]} 64. Rh4+ {
[%emt 0:00:00]} Kf5 {[%emt 0:00:03]} 65. Rh5+ {[%emt 0:00:01]} Kg4 {[%emt 0:00:
01]} 66. Rxb5 {[%emt 0:00:01]} a6 {[%emt 0:00:07]} 67. Rxb6 {[%emt 0:00:01]}
1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "15.5"]
[White "Keymer, Vincent"]
[Black "Praggnanandhaa R"]
[Result "1-0"]
[ECO "E62"]
[WhiteElo "2591"]
[BlackElo "2608"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 19,93,51,58,43,60,60,54,49,56,25,10,15,12,15,15,11,10,10,10,10,10,10,7,
10,10,6,8,9,10,7,7,6,16,10,10,5,8,5,9,0,11,0,5,0,0,0,10,2,5,6,8,9,10,0,0,0,0,0,
7,0,43,43,39,60,77,75,500,499,463,444,518,508,29987,29988,29991,29992]} 1. Nf3
Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. d4 Nc6 7. O-O e5 8. dxe5 dxe5 9.
Bg5 h6 10. Qxd8 Rxd8 11. Bxf6 {E62: King's Indian: Fianchetto: 6...c6 and
Panno Variation (6...Nc6) without ...a6.} Bxf6 12. Nd5 Kg7 {outshines the
older 12...Bg7.} 13. Nxc7 {White is slightly better.} Rb8 14. Nd5 e4 15. Nd2 e3
16. Nxf6 {[#] Nde4 is the strong threat.} exd2 17. Nd5 Bg4 18. f3 Be6 {[#] And
now ...b5 would win.} 19. e4 $146 ({Predecessor:} 19. f4 Na5 20. Rfd1 Nxc4 21.
e4 Bg4 22. b3 Bxd1 23. Rxd1 Nd6 24. Rxd2 Rbc8 25. Kf2 {0-1 (43) Oparin,G (2652)
-Shevchenko,K (2599) Tornelo INT 2021}) 19... Na5 20. Rfd1 Nxc4 21. b3 Bxd5 22.
exd5 Ne3 23. Rxd2 Rxd5 24. Rxd5 Nxd5 $11 {[%mdl 4096] Endgame KRB-KRN} 25. Rc1
Nf6 26. f4 Ne8 27. Kf2 b6 28. Bf3 Rd8 29. Ke3 Kf8 30. Rc4 Nd6 31. Rc7 Nf5+ 32.
Ke4 a5 (32... Re8+ {with more complications.} 33. Kd5 Rd8+ 34. Ke5 Re8+ 35. Kd5
) 33. Bg4 Re8+ 34. Kd3 Rd8+ 35. Kc3 Ne3 {[#] White must now prevent ...Nd5+.}
36. Bf3 Rd6 37. a4 h5 38. b4 axb4+ 39. Kxb4 Rd2 40. Kb5 Rb2+ 41. Ka6 Rxh2 42.
Kxb6 Rh3 $2 {[%mdl 8192] Black cannot hold the game after this.} (42... Rb2+
$16 {is a better chance.} 43. Ka6 Nf5) 43. Rc3 $18 Nf5 44. a5 Rxg3 {If only
Black now had time for ...Rg1....} 45. a6 {Threatens to win with a7.} Ne7 (
45... Rg1 $18 46. a7 Ra1 47. a8=Q+ Rxa8) 46. a7 Rxf3 47. a8=Q+ {[%mdl 64]
Double Attack. Weighted Error Value: White=0.02/Black=0.41} 1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "15.6"]
[White "Mendonca, Leon Luke"]
[Black "Yip, Carissa"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "2549"]
[BlackElo "2430"]
[PlyCount "95"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,95,23,21,26,16,45,45,40,41,31,8,-4,15,8,12,9,5,12,9,36,1,7,15,33,13,
49,41,46,46,118,121,105,108,111,109,110,112,122,99,128,91,112,112,109,130,108,
136,126,66,62,64,61,54,68,55,71,67,67,62,71,62,83,62,62,46,62,54,65,75,78,52,
48,46,62,48,96,92,122,109,113,99,174,112,306,291,303,303,312,304,366,326,348,
412,741,843,846,848]} 1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {
[%emt 0:00:04]} g6 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:03]} Bg7 {[%emt 0:00:00]
} 4. Nf3 {[%emt 0:00:09]} O-O {[%emt 0:00:01]} 5. e3 {[%emt 0:00:02]} d6 {
[%emt 0:00:05]} 6. Be2 {[%emt 0:00:02]} b6 {[%emt 0:00:10]} 7. O-O {[%emt 0:00:
10]} Bb7 {[%emt 0:00:01]} 8. Qc2 {[%emt 0:00:52]} Nbd7 {[%emt 0:00:10]} 9. b3 {
[%emt 0:00:26]} e5 {[%emt 0:00:07]} 10. Bb2 {[%emt 0:00:07]} Qe7 {[%emt 0:00:
01]} 11. Rfd1 {[%emt 0:00:24]} Rad8 {[%emt 0:00:04]} 12. Rac1 {[%emt 0:01:25]}
h6 {[%emt 0:00:25]} 13. dxe5 {[%emt 0:00:51]} Nxe5 {[%emt 0:00:21]} 14. Nd5 {
[%emt 0:00:34]} Bxd5 {[%emt 0:01:19]} 15. cxd5 {[%emt 0:00:06]} Nxf3+ {[%emt 0:
00:02]} 16. Bxf3 {[%emt 0:00:02]} Ne8 {[%emt 0:00:01]} 17. Bxg7 {[%emt 0:00:10]
} Kxg7 {[%emt 0:00:01]} 18. Rd4 {[%emt 0:00:34]} f5 {[%emt 0:00:05]} 19. g3 {
[%emt 0:00:15]} Rc8 {[%emt 0:00:13]} 20. Be2 {[%emt 0:00:17]} a5 {[%emt 0:00:
11]} 21. Ba6 {[%emt 0:00:11]} Ra8 {[%emt 0:00:03]} 22. Bb5 {[%emt 0:00:06]} Rf7
{[%emt 0:00:05]} 23. Rc4 {[%emt 0:00:08]} Ra7 {[%emt 0:00:08]} 24. Bxe8 {
[%emt 0:00:58]} Qxe8 {[%emt 0:00:00]} 25. Qc3+ {[%emt 0:00:20]} Kg8 {[%emt 0:
00:03]} 26. Kg2 {[%emt 0:00:05]} Kh7 {[%emt 0:00:48]} 27. h4 {[%emt 0:00:11]}
Qe7 {[%emt 0:00:07]} 28. Qd4 {[%emt 0:00:07]} Qe8 {[%emt 0:00:14]} 29. Qf4 {
[%emt 0:00:21]} Qe7 {[%emt 0:00:35]} 30. Qd4 {[%emt 0:00:15]} Qe8 {[%emt 0:00:
04]} 31. Kf1 {[%emt 0:00:52]} Qe7 {[%emt 0:00:13]} 32. Qc3 {[%emt 0:00:10]} Qe8
{[%emt 0:00:05]} 33. Ke2 {[%emt 0:00:04]} Qb5 {[%emt 0:00:25]} 34. Qd3 {
[%emt 0:00:06]} Qe8 {[%emt 0:00:28]} 35. Kd2 {[%emt 0:00:22]} Kg8 {[%emt 0:00:
25]} 36. Qc3 {[%emt 0:00:09]} Qb5 {[%emt 0:00:07]} 37. Qd3 {[%emt 0:00:06]} a4
{[%emt 0:00:43]} 38. Rxa4 {[%emt 0:00:26]} Ra5 {[%emt 0:00:08]} 39. Qxb5 {
[%emt 0:00:06]} Rxb5 {[%emt 0:00:01]} 40. Rd4 {[%emt 0:00:01]} Re7 {[%emt 0:00:
05]} 41. Rcc4 {[%emt 0:00:10]} Kf7 {[%emt 0:00:15]} 42. b4 {[%emt 0:00:15]} Re5
{[%emt 0:00:10]} 43. Rxc7+ {[%emt 0:00:09]} Kf6 {[%emt 0:00:02]} 44. Rc6 {
[%emt 0:00:30]} Rexd5 {[%emt 0:00:05]} 45. Kc3 {[%emt 0:00:04]} Rxd4 {[%emt 0:
00:08]} 46. exd4 {[%emt 0:00:00]} Ke6 {[%emt 0:00:10]} 47. a4 {[%emt 0:00:03]}
Rd5 {[%emt 0:00:03]} 48. Rxb6 {[%emt 0:00:01]} 1-0
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "15.7"]
[White "Abdumalik, Zhansaya"]
[Black "Lei, Tingjie"]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2472"]
[BlackElo "2505"]
[Annotator "ChessBase"]
[PlyCount "141"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,112,21,17,17,25,16,10,13,24,17,-4,16,22,22,20,22,14,25,25,32,16,50,46,
45,31,53,43,44,47,51,62,28,47,88,86,73,66,91,74,70,67,54,60,60,57,56,51,39,2,
16,14,-1,0,-12,0,-19,-15,-8,-2,-6,0,0,-95,-93,-84,-25,-87,-83,-88,-90,-110,0,0,
0,0,18,-45,10,-21,21,27,49,77,72,-41,-45,-81,-79,-86,22,0,0,-50,0,-387,-405,
-402,-464,-357,-310,-346,-140,-140,-126,-132,-132,-167,-138,-124,-101,-114,
-102,-94,-106]} 1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:
00]} Nc6 {[%emt 0:00:00]} 3. Bb5 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 4. d3 {
[%emt 0:00:08]} Bc5 {[%emt 0:00:00]} 5. Nbd2 {[%emt 0:00:02]} O-O {[%emt 0:00:
04]} 6. Nb3 {[%emt 0:00:05]} Bd6 {[%emt 0:00:02]} 7. O-O {[%emt 0:00:10]} a6 {
[%emt 0:00:01]} 8. Bxc6 {[%emt 0:00:04]} dxc6 {[%emt 0:00:01]} 9. Na5 {[%emt 0:
00:03]} Re8 {[%emt 0:00:33]} 10. b3 {[%emt 0:00:12]} c5 {[%emt 0:00:21]} 11.
Bb2 {[%emt 0:00:17]} Nd7 {[%emt 0:01:35]} 12. Nc4 {[%emt 0:00:34]} Qe7 {
[%emt 0:01:00]} 13. a4 {[%emt 0:00:26]} f6 {[%emt 0:00:11]} 14. Nh4 {[%emt 0:
00:15]} Nf8 {[%emt 0:00:03]} 15. Nf5 {[%emt 0:00:29]} Bxf5 {[%emt 0:00:31]} 16.
exf5 {[%emt 0:00:01]} b5 {[%emt 0:01:07]} 17. Nd2 {[%emt 0:00:35]} Nd7 {
[%emt 0:00:03]} 18. Qf3 {[%emt 0:00:05]} Rab8 {[%emt 0:00:14]} 19. Rfe1 {
[%emt 0:00:09]} Qf7 {[%emt 0:00:41]} 20. h3 {[%emt 0:00:30]} Nb6 {[%emt 0:00:
11]} 21. axb5 {[%emt 0:00:21]} axb5 {[%emt 0:00:01]} 22. Ra5 {[%emt 0:00:43]}
Nd5 {[%emt 0:01:02]} 23. Rea1 {[%emt 0:00:13]} Red8 {[%emt 0:00:39]} 24. Qe4 {
[%emt 0:00:47]} Bf8 {[%emt 0:00:31]} 25. Qg4 {[%emt 0:01:41]} Nb4 {[%emt 0:00:
13]} 26. Rc1 {[%emt 0:00:01]} Ra8 {[%emt 0:00:17]} 27. Rxa8 {[%emt 0:01:06]}
Rxa8 {[%emt 0:00:03]} 28. Bc3 {[%emt 0:00:27]} Nd5 {[%emt 0:00:48]} 29. Ra1 {
[%emt 0:00:07]} Rxa1+ {[%emt 0:00:13]} 30. Bxa1 {[%emt 0:00:02]} Nb4 {[%emt 0:
00:13]} 31. c4 {[%emt 0:00:32]} c6 {[%emt 0:00:26]} 32. f4 {[%emt 0:01:07]}
exf4 {[%emt 0:00:56]} 33. Ne4 {[%emt 0:00:07]} Kh8 {[%emt 0:00:03]} 34. Qxf4 {
[%emt 0:00:30]} Nxd3 {[%emt 0:00:17]} 35. Qb8 {[%emt 0:00:04]} h6 {[%emt 0:00:
01]} 36. cxb5 {[%emt 0:00:10]} cxb5 {[%emt 0:00:01]} 37. Qxb5 {[%emt 0:00:01]}
Nf4 {[%emt 0:00:19]} 38. Qf1 {[%emt 0:00:21]} Qc7 {[%emt 0:00:11]} 39. Qc4 {
[%emt 0:00:12]} Qa7 {[%emt 0:00:06]} 40. Bc3 {[%emt 0:00:07]} Qa2 {[%emt 0:00:
07]} 41. Bd2 {[%emt 0:00:05]} Qa1+ {[%emt 0:00:09]} 42. Kh2 {[%emt 0:00:20]}
Qe5 {[%emt 0:00:01]} 43. g3 {[%emt 0:00:11]} Nd5 {[%emt 0:00:04]} 44. Kg2 {
[%emt 0:00:07]} Kh7 {[%emt 0:00:03]} 45. Qd3 {[%emt 0:00:01]} Nb4 {[%emt 0:00:
06]} 46. Qb1 {[%emt 0:00:03]} Kh8 {[%emt 0:00:07]} 47. Nf2 {[%emt 0:00:03]}
Qd5+ {[%emt 0:00:04]} 48. Ne4 {[%emt 0:00:02]} Nd3 {[%emt 0:00:04]} 49. Kf3 {
[%emt 0:00:02]} Qxf5+ {[%emt 0:00:02]} 50. Ke3 {[%emt 0:00:01]} Nb4 {[%emt 0:
00:15]} 51. g4 {[%emt 0:00:04]} Nd5+ {[%emt 0:00:02]} 52. Ke2 {[%emt 0:00:01]}
Qe5 {[%emt 0:00:02]} 53. Kf3 {[%emt 0:00:03]} f5 {[%emt 0:00:02]} 54. Nf2 {
[%emt 0:00:03]} fxg4+ {[%emt 0:00:07]} 55. Nxg4 {[%emt 0:00:08]} Qh5 {[%emt 0:
00:05]} 56. Kg2 {[%emt 0:00:04]} Qe8 {[%emt 0:00:02]} 57. Qd3 {[%emt 0:00:03]}
Nc7 {[%emt 0:00:14]} 58. Qf3 {[%emt 0:00:03]} Bd6 {[%emt 0:00:05]} 59. Bc3 {
[%emt 0:00:01]} Ne6 {[%emt 0:00:06]} 60. Nxh6 {[%emt 0:00:26]} Qg6+ {[%emt 0:
00:02]} 61. Ng4 {[%emt 0:00:01]} Nf4+ {[%emt 0:00:02]} 62. Kf1 {[%emt 0:00:09]}
Qb1+ {[%emt 0:00:02]} 63. Be1 {[%emt 0:00:01]} Qf5 {[%emt 0:00:16]} 64. Nf2 {
[%emt 0:00:02]} Qe6 {[%emt 0:00:04]} 65. Qa8+ {[%emt 0:00:03]} Kh7 {[%emt 0:00:
01]} 66. Qe4+ {[%emt 0:00:01]} Qxe4 {[%emt 0:00:01]} 67. Nxe4 {[%emt 0:00:00]}
Be7 {[%emt 0:00:03]} 68. Bd2 {[%emt 0:00:06]} Nd5 {[%emt 0:00:10]} 69. Kf2 {
[%emt 0:00:02]} Kg6 {[%emt 0:00:03]} 70. Kf3 {[%emt 0:00:08]} Kf5 {[%emt 0:00:
08]} 71. Nc3 {[%emt 0:00:01]} 1/2-1/2
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "15.8"]
[White "Khademalsharieh, Sarasadat"]
[Black "Badelka, Olga"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "2494"]
[BlackElo "2433"]
[Annotator "ChessBase"]
[PlyCount "104"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,104,21,19,26,11,13,6,11,-21,-9,-17,-7,-49,-25,-35,-4,-47,-13,-10,3,21,
-9,23,7,12,16,23,44,-30,29,4,11,11,10,-2,-7,-7,-4,20,12,21,21,-5,21,0,0,-12,-6,
-21,-28,-22,-29,-41,-37,-48,-34,-54,-31,-27,-47,-39,-48,-10,-19,-15,-5,0,-6,
-39,-39,-78,-64,-52,-34,-85,-83,-105,-46,-31,0,0,14,0,0,0,0,0,10,0,50,61,37,51,
63,51,129,0,51,0,0,0,0,0,0,0,12]} 1. Nf3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]}
2. e3 {[%emt 0:00:02]} d5 {[%emt 0:00:00]} 3. c4 {[%emt 0:00:01]} e6 {[%emt 0:
00:06]} 4. b3 {[%emt 0:00:02]} c5 {[%emt 0:00:05]} 5. cxd5 {[%emt 0:00:02]}
exd5 {[%emt 0:00:06]} 6. d4 {[%emt 0:00:13]} Nc6 {[%emt 0:00:02]} 7. Be2 {
[%emt 0:00:29]} Bg4 {[%emt 0:00:14]} 8. dxc5 {[%emt 0:00:13]} Bxc5 {[%emt 0:00:
06]} 9. O-O {[%emt 0:00:03]} O-O {[%emt 0:00:28]} 10. Bb2 {[%emt 0:00:04]} Re8
{[%emt 0:00:26]} 11. Nc3 {[%emt 0:00:43]} Rc8 {[%emt 0:00:29]} 12. Nb5 {
[%emt 0:00:07]} a6 {[%emt 0:00:29]} 13. Nbd4 {[%emt 0:00:01]} Ne4 {[%emt 0:00:
42]} 14. Rc1 {[%emt 0:00:03]} Qb6 {[%emt 0:00:44]} 15. h3 {[%emt 0:01:10]} Bd7
{[%emt 0:00:17]} 16. Nxc6 {[%emt 0:00:11]} bxc6 {[%emt 0:00:21]} 17. Bd4 {
[%emt 0:00:38]} Bxd4 {[%emt 0:00:13]} 18. Qxd4 {[%emt 0:00:04]} Qxd4 {[%emt 0:
00:16]} 19. exd4 {[%emt 0:00:02]} f6 {[%emt 0:01:40]} 20. Bd3 {[%emt 0:00:29]}
a5 {[%emt 0:00:32]} 21. Rc2 {[%emt 0:00:28]} Ra8 {[%emt 0:00:28]} 22. Nd2 {
[%emt 0:01:06]} Nxd2 {[%emt 0:00:26]} 23. Rxd2 {[%emt 0:00:02]} a4 {[%emt 0:00:
02]} 24. bxa4 {[%emt 0:00:42]} Rxa4 {[%emt 0:00:02]} 25. Bc2 {[%emt 0:00:03]}
Rb4 {[%emt 0:00:26]} 26. Bb3 {[%emt 0:00:10]} Kf7 {[%emt 0:00:56]} 27. f3 {
[%emt 0:00:03]} f5 {[%emt 0:00:15]} 28. Kf2 {[%emt 0:00:11]} f4 {[%emt 0:00:05]
} 29. Re1 {[%emt 0:00:11]} Rxe1 {[%emt 0:00:12]} 30. Kxe1 {[%emt 0:00:01]} Ke7
{[%emt 0:00:11]} 31. Kd1 {[%emt 0:00:06]} Bf5 {[%emt 0:00:28]} 32. Kc1 {
[%emt 0:00:02]} Kd6 {[%emt 0:00:25]} 33. Kb2 {[%emt 0:00:02]} Rb7 {[%emt 0:00:
18]} 34. Re2 {[%emt 0:00:16]} Bd3 {[%emt 0:00:05]} 35. Re5 {[%emt 0:00:35]} h6
{[%emt 0:00:11]} 36. h4 {[%emt 0:00:31]} Re7 {[%emt 0:00:20]} 37. Kc3 {[%emt 0:
00:04]} Bf1 {[%emt 0:00:04]} 38. Rf5 {[%emt 0:00:07]} Bxg2 {[%emt 0:00:22]} 39.
Rxf4 {[%emt 0:00:01]} g5 {[%emt 0:00:12]} 40. hxg5 {[%emt 0:00:25]} hxg5 {
[%emt 0:00:00]} 41. Rg4 {[%emt 0:00:21]} Bxf3 {[%emt 0:00:03]} 42. Rxg5 {
[%emt 0:00:01]} Kc7 {[%emt 0:00:04]} 43. Kb4 {[%emt 0:00:08]} Kb6 {[%emt 0:00:
02]} 44. a4 {[%emt 0:00:03]} Ra7 {[%emt 0:00:22]} 45. Rg6 {[%emt 0:00:11]} Be4
{[%emt 0:00:02]} 46. Rf6 {[%emt 0:00:03]} Ra8 {[%emt 0:00:03]} 47. Bd1 {
[%emt 0:00:10]} Ra7 {[%emt 0:00:04]} 48. Bg4 {[%emt 0:00:04]} Bd3 {[%emt 0:00:
05]} 49. Bh5 {[%emt 0:00:05]} Bc2 {[%emt 0:00:03]} 50. a5+ {[%emt 0:00:31]}
Rxa5 {[%emt 0:00:01]} 51. Rxc6+ {[%emt 0:00:01]} Kxc6 {[%emt 0:00:01]} 52. Kxa5
{[%emt 0:00:05]} Be4 {[%emt 0:00:03]} 1/2-1/2
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "15.9"]
[White "Abdusattorov, Nodirbek"]
[Black "Nihal Sarin"]
[Result "0-1"]
[ECO "C68"]
[WhiteElo "2627"]
[BlackElo "2620"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 17,102,0,6,0,22,-22,-8,-24,-25,-24,-9,-16,26,23,18,22,30,19,46,25,27,2,
55,39,57,11,20,15,26,26,18,0,0,0,33,35,77,102,92,0,0,0,0,0,99,0,68,69,56,0,0,0,
0,0,0,-21,-62,-402,-400,-441,-434,-489,-462,-481,-481,-776,-831,-777,-512,-916,
-908,-1550,-1521,-1418,0,-389,0,-1683,-1581,-29976,-29977,-29978,-29979,-29978,
-29980,-29990,-29991]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Bd6 6.
d4 exd4 7. Qxd4 f6 8. Be3 Ne7 9. Nbd2 Be6 10. Qc3 {C68: Ruy Lopez: Exchange
Variation, sidelines.} Ng6 11. Rad1 Qe7 12. Nd4 {The position is equal.} Bb4
13. Qd3 Ne5 ({Not} 13... Bxa2 $2 14. c3 $18) 14. Qe2 {[#]} Bxd2 $5 $146 {
[%mdl 8] New and interesting.} ({Predecessor:} 14... O-O-O 15. Nxe6 Qxe6 16. a3
Bxd2 17. Bxd2 Nc4 18. Bc1 Rxd1 19. Rxd1 Re8 20. Re1 Nd6 {1/2-1/2 (36) Guseinov,
G (2634)-Khairullin,I (2652) Skopje 2015}) 15. Qxd2 O-O-O {[#] ...c5 is the
strong threat.} 16. Qc3 g5 17. f3 Rhg8 18. b3 h5 19. Rd2 Rd7 (19... Bd7 $11)
20. Rfd1 Rgd8 21. Nxe6 Rxd2 22. Rxd2 Rxd2 23. Qxd2 {Strongly threatening Nd4.}
Qxe6 24. Bd4 b6 25. Kf2 c5 26. Bc3 a5 27. Qd5 Qe7 28. h4 (28. Bxe5 $16 fxe5 29.
Qa8+ Kd7 30. Qd5+ Kc8 31. Qa8+ Kd7 32. Qh8) 28... gxh4 $11 29. f4 Ng4+ 30. Ke2
Qe8 (30... Qh7 $11) 31. Be1 (31. Qa8+ $16 Kd7 32. Qxe8+ Kxe8 33. Be1) 31... Kb8
(31... Qg6 $1 $11) 32. Bxh4 $14 a4 33. e5 ({White should try} 33. f5 $14) 33...
axb3 34. axb3 fxe5 35. f5 Qb5+ 36. Qd3 Qc6 37. Qf3 $4 {[%mdl 8192] White is on
the road to losing.} (37. Kf1 $15) 37... e4 $19 38. Qf4 e3 39. Qf3 {[#]} Qb5+
40. c4 Qxb3 41. Qd5 (41. Qe4 $142 Qb2+ 42. Kf3) 41... Qc2+ 42. Kf3 Qb1 {
White must now prevent ...Qf1+.} 43. Kf4 (43. Ke2 $142 Qc2+ 44. Kf3) 43... e2
44. Qd8+ Kb7 45. Qd5+ Kb8 $2 (45... Ka7 46. Kg5 Qc1+ 47. Kg6 Qf4) 46. Qd8+ Kb7
$2 (46... Ka7 47. Kg5 e1=Q 48. Bxe1 Qxe1 49. Qxc7+ Ka6) 47. Qd5+ $1 Ka7 {
( -> ...Qc1+)} 48. Qd2 Qf1+ {Black mates.} 49. Kg5 Nf2 50. Qf4 Qxg2+ 51. Bg3
Nh3+ {[%mdl 64] Double Attack. Weighted Error Value: White=0.60/Black=0.54} 0-1
[Event "Polgar Challenge 2021"]
[Site "Online"]
[Date "2021.04.10"]
[Round "15.10"]
[White "Murzin, Volodar"]
[Black "Mammadzada, Gunay"]
[Result "1-0"]
[ECO "B53"]
[WhiteElo "2478"]
[BlackElo "2443"]
[Annotator "Shahid"]
[PlyCount "85"]
[EventDate "2021.04.08"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "600+5"]
{[%evp 0,85,21,33,43,41,79,53,62,61,37,49,19,21,30,44,29,17,22,22,30,10,31,13,
6,0,0,-3,51,29,26,48,43,18,24,0,0,1,32,39,38,38,42,43,58,43,56,57,61,54,45,53,
40,34,43,14,35,24,24,19,15,20,17,0,49,43,43,12,36,23,19,22,33,17,0,0,29,-32,60,
115,208,116,294,317,369,372,762,1081]} 1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:
00]} 2. Nf3 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:00]} cxd4 {
[%emt 0:00:00]} 4. Qxd4 {[%emt 0:00:02]} Nf6 {[%emt 0:00:01]} 5. Be2 {[%emt 0:
00:03]} Nc6 {[%emt 0:00:23]} 6. Qe3 {[%emt 0:00:03]} g6 {[%emt 0:00:01]} 7. O-O
{[%emt 0:00:02]} Bg7 {[%emt 0:00:08]} 8. Rd1 {[%emt 0:00:02]} O-O {[%emt 0:00:
11]} 9. Nc3 {[%emt 0:00:03]} Nd7 {[%emt 0:00:53]} 10. Nd5 {[%emt 0:00:47]} a6 {
[%emt 0:00:10]} 11. c3 {[%emt 0:00:25]} b6 {[%emt 0:01:07]} 12. Qf4 {[%emt 0:
00:56]} Bb7 {[%emt 0:00:19]} 13. Qg3 {[%emt 0:00:05]} Nce5 {[%emt 0:01:01]} 14.
Bg5 {[%emt 0:00:51]} Re8 {[%emt 0:02:50]} 15. Nxe5 {[%emt 0:00:40]} Bxe5 {
[%emt 0:00:08]} 16. Qh4 {[%emt 0:00:24]} Bxd5 {[%emt 0:00:11]} 17. exd5 {
[%emt 0:00:11]} Bf6 {[%emt 0:00:04]} 18. a4 {[%emt 0:00:08]} Qc7 {[%emt 0:00:
26]} 19. Rd3 {[%emt 0:00:54]} Bxg5 {[%emt 0:01:14]} 20. Qxg5 {[%emt 0:00:03]}
Nf6 {[%emt 0:00:01]} 21. Rd4 {[%emt 0:00:09]} Kg7 {[%emt 0:00:53]} 22. Rad1 {
[%emt 0:00:22]} Qc5 {[%emt 0:00:18]} 23. Rc4 {[%emt 0:01:17]} Qa5 {[%emt 0:00:
19]} 24. Qd2 {[%emt 0:00:16]} Rec8 {[%emt 0:00:35]} 25. Rd4 {[%emt 0:00:10]} b5
{[%emt 0:00:06]} 26. axb5 {[%emt 0:01:23]} axb5 {[%emt 0:00:00]} 27. h3 {
[%emt 0:00:06]} Rab8 {[%emt 0:00:12]} 28. Bf1 {[%emt 0:00:28]} Rc7 {[%emt 0:00:
25]} 29. Qe1 {[%emt 0:00:11]} Qa2 {[%emt 0:00:06]} 30. Qd2 {[%emt 0:01:28]} Rc5
{[%emt 0:00:05]} 31. f4 {[%emt 0:00:40]} b4 {[%emt 0:00:20]} 32. cxb4 {[%emt 0:
00:02]} Rc7 {[%emt 0:00:03]} 33. b5 {[%emt 0:00:02]} Qa7 {[%emt 0:00:03]} 34.
Kh2 {[%emt 0:00:08]} Rbc8 {[%emt 0:00:01]} 35. Qb4 {[%emt 0:00:12]} Qb6 {
[%emt 0:00:02]} 36. Ra1 {[%emt 0:00:13]} Rc1 {[%emt 0:00:03]} 37. Ra6 {[%emt 0:
00:03]} Qb7 {[%emt 0:00:15]} 38. Be2 {[%emt 0:00:02]} h5 $4 {[%emt 0:00:08]} (
38... Nxd5) 39. Rc6 {[%emt 0:00:08]} h4 {[%emt 0:00:05]} 40. Bf3 {[%emt 0:00:
07]} Kh7 {[%emt 0:00:03]} 41. Qd2 {[%emt 0:00:06]} Ra1 {[%emt 0:00:04]} 42. f5
{[%emt 0:00:02]} Rca8 {[%emt 0:00:13]} 43. Rxh4+ {[%emt 0:00:01]} 1-0