[Event "FTX Crypto Cup Prelims 2021"]
[Site "Chess24"]
[Date "2021.05.18"]
[Round "15.5"]
[White "Dubov, Daniil"]
[Black "Mamedyarov, Shakhriyar"]
[Result "1-0"]
[ECO "D79"]
[WhiteElo "2770"]
[BlackElo "2761"]
[Annotator "Finkel,A"]
[PlyCount "85"]
[EventDate "2021.05.23"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 20,85,-7,1,9,-33,-23,-9,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,65,63,57,58,60,
60,63,52,61,58,59,53,95,94,98,95,98,92,112,103,106,106,101,101,136,136,136,136,
136,136,135,122,111,106,125,125,123,130,144,136,164,136,359,356]} 1. Nf3 Nf6 2.
g3 g6 3. d4 Bg7 4. Bg2 O-O 5. O-O d5 6. c4 c6 7. cxd5 cxd5 8. Ne5 (8. Nc3) 8...
Ng4 9. Nxg4 Bxg4 10. Nc3 Nc6 {[%mdl 32]} 11. h3 (11. Be3 e5 12. Nxd5 exd4 13.
Bc1 Re8 14. Re1 Rc8 15. a3 d3 16. Qxd3 Nd4 17. Be3 Bf5 18. Qd2 Nb3 19. Qb4 Nxa1
20. Rxa1 Rc2 21. Rd1 Bxb2 22. Bxa7 Rcxe2 23. Bf3 Rc2 24. Bd4 Bxd4 25. Qxd4 Rc6
26. h4 h5 27. Qf4 Qd6 28. Qxd6 Rxd6 29. Ne7+ Rxe7 30. Rxd6 {1/2-1/2 (30)
Donner,J-Trifunovic,P Amsterdam 1950 MCL [Ftacnik,L]}) 11... Bd7 {D79:
Fianchetto Grünfeld: Symmetrical Variation (6 0-0 c6 7 cxd5 cxd5).} (11... Be6
12. e3 (12. e4 $5 Nxd4 13. Nxd5 $6 (13. exd5 Bf5 (13... Bd7 14. Bg5 Nf5 15. Re1
h6 16. Bf4 Re8 17. Rc1 {+/= Christiansen,L-Browne,W/Buenos Aires 1981} Qb6 18.
Na4 Bxa4 19. Qxa4 Nd6 20. Rc2 Kf8 21. h4 Nf5 22. Qa3 a5 23. Bh3 Nd6 24. Rxe7
Rad8 25. Rxe8+ Kxe8 26. Be3 Qb4 27. Qxb4 axb4 28. Bb6 Ra8 29. Re2+ Kf8 30. Bc5
Rd8 31. Bxb4 Bf6 32. Bc8 b6 33. Bb7 Kg7 34. Bxd6 Rxd6 35. Bc6 g5 36. hxg5 hxg5
37. Kg2 Bd4 38. b4 Rf6 39. a4 g4 40. a5 bxa5 41. bxa5 Rf3 42. a6 Bb6 43. d6 Ra3
44. Bb5 Rb3 45. Ba4 Rb4 46. Bc6 Rc4 47. d7 Rd4 48. Rb2 Bc5 49. Rb5 Ba7 50. Rd5
{1-0 (50) Christiansen,L (2515)-Browne,W (2555) Moron 1981}) 14. g4 $6 (14. Bg5
Re8 15. g4 Bc8 16. Re1 Qd6 17. Re4 e5 18. Qxd4 f5 19. Qb4 Bf8 20. Qxd6 Bxd6 21.
Re2 Bd7 22. Bf6 Kf7 23. g5 b5 24. a4 bxa4 25. Nxa4 f4 26. Nc3 {1-0 (26) Lazic,
M (2493)-Cotonnec,M (2251) Malakoff 2006}) 14... Bc2 $1 15. Qd2 Rc8 16. f4 b5
$15 {Egger,T-Mann,C/BL2-S 1991 (30)}) 13... Qd7 14. Kh2 Rac8 15. Bh6 Bxh6 16.
Qxd4 Bxd5 17. exd5 b5 $15 {Feick,S-Zuse,P/BL 1988 (33)}) 12... Qd7 13. Kh2 f5
$5 $146 (13... Rfd8 14. Bd2 (14. b3 $5 f6 15. Bb2 Rac8 16. Qe2 Bf7 17. Rfd1 b6
$11 {Birnboim,N-Ftacnik,L/EU-chT Skara 1980 (32)}) 14... Rac8 15. Qe2 (15. Rc1
f5 (15... f6 16. Qa4 (16. Na4 b6 17. b4 Nb8 18. Qb3 Na6 19. Nb2 Nc7 20. a4 Bf7
21. Rc2 Ne8 22. Rfc1 Rxc2 23. Rxc2 e5 24. b5 exd4 25. exd4 Nc7 26. Nd3 Ne6 27.
Be3 Bf8 28. Rc6 Be7 29. h4 Nc5 30. Nxc5 bxc5 31. Bf4 cxd4 32. Rc7 Qe6 33. Rxa7
g5 34. Bc7 Re8 35. b6 Bd6 36. Bxd6 Qxd6 37. b7 d3 38. Ra8 d2 39. Rxe8+ Bxe8 40.
Qxd5+ {1-0 (40) Ilincic,Z (2461)-To,N (2356) Budapest 2018}) 16... Bf7 17. Rfd1
a6 18. Be1 e6 19. b4 Be8 20. e4 dxe4 21. Nxe4 Qe7 22. b5 axb5 23. Qxb5 Nxd4 24.
Qb6 Rxc1 25. Rxc1 Rd7 26. Bb4 Qd8 27. Qxd8 Rxd8 28. Be7 Ra8 29. Nxf6+ Bxf6 30.
Bxf6 Nc6 31. Rc2 Kf7 32. Bg5 Bd7 33. Be3 Ke7 34. Rb2 Bc8 35. Bc5+ Kd8 36. Rd2+
Bd7 37. Bd6 Ra4 38. f4 Ke8 39. g4 Nb4 40. a3 Nd5 41. Bxd5 exd5 42. Rxd5 Re4 43.
Kg3 Re3+ 44. Kh4 Bc6 45. Rd2 Kf7 46. Bc5 Rc3 47. Bb4 Rf3 48. Rd8 h6 49. Bf8
Rxf4 50. Bxh6 Rf3 51. Rf8+ Ke6 52. Rg8 Be4 53. Re8+ Kd5 54. Bg7 Bd3 55. Rd8+
Ke6 56. Bf8 Kf6 57. Rd6+ Ke5 58. Be7 Be4 59. Rd2 Bd3 60. Rb2 Be4 61. Rh2 Ke6
62. Re2 Kxe7 63. Kg5 Rxa3 64. Rxe4+ Kd7 65. Rd4+ Kc7 66. Rc4+ Kd7 67. Rb4 Kc7
68. h4 Ra6 69. Rf4 b5 70. Rf7+ Kc6 71. Rf6+ Kb7 72. Rxa6 Kxa6 73. h5 {1-0 (73)
Kurajica,B (2507)-Rogulj,B (2405) Bol 2013}) 16. Na4 b6 17. b4 Bf7 18. f4 e6
19. Nb2 $14 {Nalbandian,T-Mirumian,V/Erevan op 1996 (44)} a5 20. a3 axb4 21.
axb4 Na7 22. Nd3 Rxc1 23. Qxc1 Rc8 24. Qd1 Be8 25. g4 Qa4 26. Qxa4 Bxa4 27. Ra1
Bb5 28. Ne5 Nc6 29. Nxc6 Rxc6 30. Ra2 Bf8 31. gxf5 gxf5 32. Bf3 Bc4 33. Ra3 b5
34. Bh5 Kg7 35. Ra7+ Kg8 36. Be8 Rb6 37. Bf7+ Kh8 38. Be1 h6 39. Bh4 Bg7 40.
Bg6 Rb8 41. Bf7 Rb6 42. Be7 Bd3 43. h4 Rc6 44. Ra8+ Kh7 45. h5 {1-0 (45)
Nalbandian,T (2475)-Mirumian,V (2425) Yerevan 1996}) 15... f6 16. Rfd1 Bf7 17.
Be1 a6 $6 18. Rac1 b5 19. b3 Qb7 20. f4 Qb6 21. Bf3 Rc7 22. Qg2 $14 {Garcia,
R-Dubin,J/Buenos Aires ARG ch 1964 (89)}) (13... Rac8 14. Bd2 h5 (14... f6 15.
Qf3 (15. Qa4 $5 Bf7 16. b4 e5 $6 17. b5 Ne7 18. Qxa7 Ra8 19. Qc5 Rfc8 20. Qb4
Rc4 21. Qb2 exd4 22. exd4 Rxd4 23. Ne2 $14 {Smyslov,V-Korchnoi,V/USSR 1975 (43)
} Rda4 24. Bc3 d4 25. Bxd4 Rxa2 26. Rfe1 f5 27. Rxa2 Rxa2 28. Qc3 Bf8 29. Qe3
Bd5 30. Nc3 Bxg2 31. Kxg2 Ra8 32. Qe5 Kf7 33. Qh8 Qd6 34. Qxh7+ Ke8 35. Be5 Qe6
36. Re3 Qf7 37. Qh4 Rd8 38. Bf6 Rd6 39. Bxe7 Bxe7 40. Qh8+ Qf8 41. Qe5 Kf7 42.
Nd5 Bd8 43. h4 Kg8 44. h5 {1-0 (44) Smyslov,V (2605)-Kortschnoj,V (2665) Riga
1975}) (15. b4 $5 Nxb4 $6 16. Qb3 Nc6 17. Bxd5 Bxd5 18. Nxd5 Kh8 19. Nf4 $16 {
Radashkovich,I-Birnboim,N/Netanya 1977 (36)}) 15... Rcd8 16. Rfd1 Bf7 17. Be1
e6 18. Rac1 Qe7 19. Qe2 Rd7 20. Na4 Rc7 21. Nc5 Rfc8 $11 {Ionescu,C-Rogozenko,
D/mvc-igm 1996 (44)}) (14... f5 15. f4 h5 16. Rc1 Rfd8 17. Bf3 Bf6 18. Qe2 Kg7
19. h4 b6 20. Qb5 Bf7 21. Be2 Qb7 22. Qa6 Qd7 23. Qa4 Be8 24. Ba6 Ra8 25. b4 e6
26. Qb3 Be7 27. Ne2 Nb8 28. Bd3 b5 29. Ng1 Qb7 30. Nf3 Nd7 31. Ng5 Bxg5 32.
hxg5 Nb6 33. Rc5 Nc4 34. Qc3 Rac8 35. Bc1 Nb6 36. Bc2 Nd7 37. Rd1 Nb6 38. Bb3
Kf8 39. Bb2 Nc4 40. Bxc4 bxc4 41. Ra5 a6 42. a4 Ra8 43. Ba3 Kg7 44. Rb1 Rdb8
45. b5 axb5 46. axb5 Rxa5 47. Qxa5 Ra8 48. Qb4 Bxb5 49. Qc5 Rxa3 50. Qxa3 Qa6
51. Qxa6 Bxa6 52. Rb6 Bc8 53. Rc6 {1-0 (53) Westerberg,J (2546)-Petriashvili,N
(2441) Batumi 2019}) 15. f4 $6 Nb4 16. Qb3 Rc4 17. a3 Nc6 18. Qa2 Nb8 $11 {
Khasin,A-Epishin,V/Tashkent Agzamov mem 1986 (33)}) 14. f4 Bf7 15. Bd2 e6 $11 {
The position is symethrical and it seems that neither side can make any
progress,but the game shows that everything is not so simple...} 16. Qe2 Bf6
17. Rac1 Rfc8 18. b3 {Weakening square a3 and giving black a chanse to fight
for the advantage.} Be7 19. Na4 Ba3 20. Rc3 (20. Rc2 $5) 20... Qe7 21. Nc5 b6
22. Nd3 $6 (22. Na6 $5 Bd6 (22... Qb7 $2 23. b4 $1 Nxb4 24. Nxb4 Bxb4 25. Rxc8+
Rxc8 26. Bxb4 $18) 23. Rfc1 Qb7 24. Bf1 Be8 25. Qg2 Ne7 $11) 22... a5 $1 {
The position remains equal,but now white has to be carefull.} 23. Bc1 Bd6 24.
Bb2 Nb4 $1 25. a4 $6 {After this move white is slightly worse.The simpliest
way to keep the balance was} (25. Rxc8+ Rxc8 26. Rc1 $1 (26. Nxb4 axb4 27. Rc1
Ra8 $1 {[%csl Ra2]}) 26... Rxc1 27. Bxc1 Nxd3 28. Qxd3 g5 29. Qc3 $11) 25...
Rxc3 26. Bxc3 Rc8 27. Rc1 (27. Bxb4 axb4 28. Rc1 Rc3 29. Rxc3 (29. Qd1 g5 30.
Bf3 Kg7 $15 {[%csl Rf4][%CAl Gh7h5,Gh5h4]}) 29... bxc3 30. Qc2 Qc7 31. Bf1 g5
$15) 27... Nxd3 28. Qxd3 g5 $1 $15 {Finally black gets the the real target:
white can't prevent h7-h5-h4 and the white pawns on d4 and f4 become weak.} 29.
Bd2 Rxc1 30. Bxc1 h5 31. Bd2 $5 {Bringing bishop to defense.} h4 $5 32. gxh4
gxf4 33. exf4 Bh5 $1 ({Of course not} 33... Qxh4 34. Qg3+ Qxg3+ 35. Kxg3 Bh5
36. Bf3 Bxf3 37. Kxf3 Kf7 $11 {and the draw is inevitable.}) 34. Kg3 (34. Qg3+
Kh7 $1 35. Qg5 Bd1 $1 (35... Qxg5 $2 36. hxg5 Bd1 37. Bf1 Bxb3 38. Bb5 $16 {
[%CAl Gh3h5]}) 36. Qg3 Qf6 37. Qe3 Qh6 38. Kh1 Kg8 39. Bc1 Kf7 $15) 34... Qg7+
35. Kh2 Qf6 36. Qe3 Kf7 37. Be1 Qh8 $1 38. Bf2 Qb8 $1 {Very tricky move
forcing white to make a decision with what piece to defend on f4.} 39. Bg3 $2 {
After this mistake white's position is lost.It was nessasary to play} (39. Kg3
Qg8+ (39... Qc7 40. Bf3) 40. Kh2 Qc8 41. Bf3 Bxf3 42. Qxf3 Qc1 43. Kg3 Kg6 44.
h5+ {with unclear position.}) 39... Qc7 $17 40. Qd2 Bb4 ({More accurate was}
40... Kf6 $5 41. Bf1 Bb4 42. Qd3 Qc1 43. Kg2 Bd2 $17 {depriving white any
counterchanses.}) 41. Qd3 Qc3 42. Qxc3 (42. Qb5 Qxd4 43. Qd7+ Be7 $17) 42...
Bxc3 43. Bf2 Bd1 44. Bf1 Bxb3 45. Bb5 Bd1 46. Kg3 Bd2 $1 $19 {Now the only
white piece that can move is darksquared bishop.} 47. Bg1 (47. Bc6 $6 Be2 $1
48. Bg1 Ke7 49. Bf2 Kd8 $1 50. Bg1 b5 $1 51. axb5 a4 52. b6 a3 $19) 47... Ke7
48. Bf2 Kd8 49. Bg1 Bh5 {[%CAl Gd2b4,Gb4e7,Ge7f6,Gh5e8,Gd8c6,Gb6b5] 0-1 (49)
Zalkind,K (2275)-Finkel,A (2500) Israel 1998 CBM 064 [Finkel,A]}) (11... Bc8
12. e3 e6 13. Rb1 (13. b3 b6 14. Ba3 Re8 15. Qd2 Ba6 16. Rfd1 Rc8 17. Rac1 Qd7
18. Na4 Ne7 19. Nb2 $1 {[%CAl Gb2d3,Gd3e5]} Rxc1 20. Rxc1 Rc8 21. Rc3 (21. Nd3
Rxc1+ 22. Bxc1 Qc6 23. Nb4) 21... Rxc3 22. Qxc3 Qc8 23. Qxc8+ Nxc8 24. Bf1 Bxf1
25. Kxf1 {1/2-1/2 (25) Sellos,D (2310)-Roos,D (2380) Puteaux 1980 EXT 2014
[Primel,D]}) 13... Ne7 14. b4 Nf5 15. Ba3 Nd6 16. b5 Re8 17. Bxd6 Qxd6 18. Qb3
f5 19. Na4 b6 20. Rfc1 Bd7 21. Nb2 Rec8 22. Nd3 Rxc1+ 23. Rxc1 Rc8 24. Rxc8+
Bxc8 25. Qc2 Bd7 26. a4 Kf8 27. Qc3 Ke7 28. Bf1 Kd8 {1/2-1/2 (28) Phillips,
A-Barden,L London, National Chess Centre 1954}) (11... Bf5 12. e3 e5 13. dxe5
d4 14. exd4 Nxd4 15. Bf4 Ne6 16. Qc1 Nxf4 17. Qxf4 Re8 18. Rfe1 Qa5 19. Nd5
Bxh3 20. b4 Qd8 21. Rad1 Bd7 22. Re3 g5 23. Nf6+ Bxf6 24. Qxf6 Qxf6 25. exf6
Rxe3 26. fxe3 Bg4 27. Rd4 Be6 28. Bxb7 Rb8 29. a4 h6 30. Be4 Rc8 31. b5 Kf8 32.
a5 Ke8 33. Bc6+ Kf8 34. Bb7 {1-0 (34) Burmakin,V (2550)-Donk,M (2310)
Pardubice 1997}) 12. e4 $5 {[%mdl 4] A promising side line.} (12. Nxd5 e6 (
12... Nxd4 13. Bg5 (13. Be3 e5 14. Bxd4 exd4 15. Nf4 Bc6 16. Bxc6 bxc6 17. Qa4
Qb6 18. Nd3 Rfe8 19. Rfe1 Bh6 20. Rad1 c5 21. b3 Rac8 22. h4 Re7 23. Qc4 Qe6
24. Qxe6 Rxe6 25. f4 Ra6 26. Rd2 c4 27. bxc4 Rxc4 28. Rb1 Bf8 29. Kf2 Bd6 30.
g4 Rb6 31. Rdb2 Rxb2 32. Rxb2 a5 33. g5 Bb4 34. Kf3 Bc3 35. Rb8+ Kg7 36. Ne5
Rb4 37. Rc8 h5 38. Nd7 f5 39. gxf6+ Kf7 40. Rc6 Rb7 41. Ne5+ {1-0 (41)
Mikhalchishin,A (2480)-Heinig,W (2300) Leipzig 1979}) 13... Re8 14. e4 h6 15.
Bxh6 Bxh6 16. Qxd4 Bg7 17. Qd2 Bb5 18. Rfd1 Ba4 19. Re1 e6 20. Qb4 exd5 21.
Qxa4 dxe4 22. Rxe4 Rxe4 23. Qxe4 Bxb2 24. Rb1 Bd4 25. Rxb7 Qf6 26. Qf3 Qxf3 27.
Bxf3 Rd8 28. Be2 Rd6 29. Kg2 Rf6 30. f4 g5 31. Kf3 gxf4 32. gxf4 Kg7 33. Ke4
Bb6 34. Bc4 Bc5 35. f5 Bf2 36. a4 a5 37. Bd5 Be1 38. Ra7 Bb4 39. h4 Be1 40. h5
Bd2 41. Ke5 Bc3+ 42. Kf4 Bd2+ 43. Kg4 Bc3 44. Ba2 Bd2 45. Bc4 Bb4 46. Kf4 Bd2+
47. Ke4 Bb4 48. h6+ Kxh6 49. Bxf7 Kg5 50. Be6 Rh6 51. Kd5 Bc3 52. Rc7 Bb4 53.
Ke5 Rh1 54. Rg7+ Kh6 55. Rg6+ Kh7 56. Bg8+ Kh8 57. Bd5 Re1+ 58. Kf6 Be7+ 59.
Kf7 Kh7 60. f6 Bb4 61. Rg3 Kh6 62. Bf3 Bc3 63. Rg6+ Kh7 64. Rg5 Bd2 65. Rh5+
Bh6 66. Bg4 {1-0 (66) Lima,D (2528)-Andrade,R (2087) Rio de Janeiro 2019}) 13.
Nc3 Nxd4 14. Bxb7 Rb8 15. Bg2 Qc8 16. Qd3 Bc6 17. Rb1 Rd8 18. Qc4 Bxg2 19. Qxc8
Rdxc8 20. Kxg2 Rxc3 21. bxc3 Rxb1 22. cxd4 Bxd4 23. Bh6 Rxf1 24. Kxf1 f6 25.
Bd2 e5 26. e4 Kf7 27. Ke2 Ke6 {1/2-1/2 (27) Mamedyarov,S (2726)-Radjabov,T
(2788) Astana 2012}) 12... dxe4 ({Wrong is} 12... Bxd4 $2 13. exd5 Rc8 14. Bh6
$18) 13. d5 {[#]} Ne5 $146 {The position is equal.} ({Predecessor:} 13... Nb4
14. Qb3 a5 15. a3 Nd3 16. Nxe4 Nxc1 17. Raxc1 a4 18. Qb4 Ra6 19. Qxb7 Rb6 {
1/2-1/2 (72) Milovanovic,M (2358)-Staal,J (2435) ICCF corr 1988}) 14. Nxe4 Bb5
15. Re1 Nd3 {[%mdl 64] Double Attack} 16. Re3 Nxc1 ({Much weaker is} 16... Bxb2
$6 17. Bxb2 Nxb2 18. Qb3 $16) 17. Rxc1 Bh6 ({Not} 17... Bxb2 $2 18. Rb1 $18)
18. f4 Qb6 19. Qd2 Rac8 20. Kh2 Rxc1 21. Qxc1 Qd8 (21... Bg7 $11) 22. Qc5 a6
23. Nc3 Qd6 24. Qxd6 exd6 25. Nxb5 axb5 $14 {[%mdl 4096] Endgame KRB-KRB} 26.
Rb3 Ra8 27. a3 Ra5 28. Bf1 Bg7 29. Bxb5 Bd4 30. Kg2 h5 31. Kf3 Kg7 32. g4 hxg4+
33. hxg4 Ra8 34. Bd7 b6 {[#]} 35. Rb4 $1 {[%CAl Rb4d4]} Bg1 {[#]} 36. Re4 $1
Ra7 37. Bc6 f5 38. Re2 fxg4+ 39. Kxg4 Bd4 40. a4 Kf7 41. Be8+ Kf8 42. b3 Kg7 $2
(42... Re7 $16 43. Rxe7 Kxe7 44. Bxg6 Kf6) 43. Re6 {[%mdl 64] Double Attack.
Weighted Error Value: White=0.03/Black=0.16} 1-0
