[Event "15th Ugra Governor's Cup"]
[Site "Khanty-Mansiysk RUS"]
[Date "2019.11.22"]
[Round "6.6"]
[White "Nesterov, Arseniy"]
[Black "Ponkratov, P."]
[Result "0-1"]
[ECO "D76"]
[WhiteElo "2489"]
[BlackElo "2619"]
[Annotator "Yip"]
[PlyCount "72"]
[EventDate "2019.11.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "TWIC 1307"]
[Source "Mark Crowther"]
[SourceDate "2019.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.25"]
[SourceQuality "2"]
{merged with black repertoire -The Safest Grunfeld Reloaded(Delchev-Chess
Stars 2019) The 10.a4 idea seems quite harmless} 1. Nf3 Nf6 2. c4 g6 3. d4 Bg7
4. g3 O-O 5. Bg2 d5 6. O-O Nc6 7. cxd5 Nxd5 8. Nc3 Nb6 9. e3 Re8 {This is a
key tabiya in the fluid g3 Grunfeld. Black is preparing ..e5. Delchev mentions
many replies except the move played} 10. a4 (10. d5 Na5 11. Nd4 Bd7) (10. Re1
a5) (10. h3 a5) (10. Nh4 e5) (10. Ne1 e5) (10. Qe2 e5) (10. a3 {A waiting move}
) 10... a5 {A human reaction that levels the game. Black has no problems
now} 11. Nb5 {Both sides now exploit their fresh queenside outposts. White
ignores his queenside development which makes the an illgical plan as there is
no clear benefit to this knight jump} (11. Qe2 Be6) 11... Nb4 {Occupying
the outpost reduces control of e5 and support for the ..e5 break} 12. e4 {
White takes the centre but gives Black a big target} (12. Nc3 Be6 (12... c6
$5) 13. b3 Bf5) 12... c6 {Black is slightly better after this
modest restraining move} 13. Na3 (13. Nc3 Bg4 14. e5 Qc7 {Black will make
good use of the d5-outpost}) 13... Bg4 {The pin indirectly increases the
pressure on d4} 14. Be3 {The Nc3-b5-a3 regrouping has improved White's
position} e5 {This was the point of ..Re8 but Black also had a promising
option} ({Black should play} 14... c5 {[%mdl 512]} 15. e5 (15. dxc5 Qxd1 16.
Rfxd1 Nxa4 17. Nc4 Nxb2 18. Nxb2 Bxb2 {1/2-1/2 (60) Lodhi,M (2349)-Liu,Z (2257)
Qingdao 2019}) 15... N6d5 {White has problems finding a plan now} (15... cxd4
$5) 16. h3 Bf5 17. Qb3 (17. Bd2) 17... Qd7 (17... Rc8) 18. Rad1 (18.
Kh2 {Saving the h-pawn allows Black to take over the light squares} Be6
19. Qd1 Nxe3 20. fxe3 cxd4 21. exd4 Bh6 22. Nb5 Nd5) 18... Bxh3 19. Bxh3
Qxh3) 15. dxe5 {Black must now prevent Qxd8.} Qxd1 16. Rfxd1 Nxa4 {Black
is making as progress in the centre as White is in the centre} 17. Nc4 b5 {
Strongly threatening ...Nc2.} 18. Rd2 {} Red8 {Challenging the d-file is
sensible} (18... Reb8 {Queenside play seems promising at first but the chances
level out after a few moves} 19. Ng5 bxc4 (19... h6 20. Bf3 hxg5 21. Bxg4 bxc4
22. Rxa4 Nd3 23. e6 Rxb2 24. e7 Rb1+ 25. Rd1 Rxd1+ 26. Bxd1 Bf6 27. Rxa5 Re8
28. Kf1 Bxe7) 20. Rxa4 h6 21. Bf3 hxg5 22. Bxg4 Nd3 23. e6 Rb4 24. Rxb4
axb4 25. Be2 fxe6 26. Bxd3 cxd3 27. b3 g4 28. Rxd3) 19. Nd4 (19. Nxa5 {
Is a minor improvement} c5 20. Nb7 Rxd2 21. Bxd2 Nd3 22. Bf1 Bxf3 23. Bxd3 c4
24. Bc2 Bxe5) 19... bxc4 20. Rxa4 c5 (20... Bxe5 21. f4) 21. Nf3
Nd3 (21... Rxd2 {Is more to the point} 22. Nxd2 {Forced} (22. Bxd2 Rd8
23. Bxb4 (23. Be3 Rd1+ 24. Bf1 Bxf3) 23... cxb4 24. Ra1 b3) 22... c3
23. bxc3 Bd7 24. Ra1 Nc2 25. Ra2 Nxe3 26. fxe3 a4 {The extra tripled pawn
is not very useful}) 22. h3 {[%CAl Rh3g4]} Bxf3 23. Bxf3 Rdb8 {Black
remains with some queenside pressure} 24. e6 {Returning a pawn creates a
target} fxe6 ({Of course not} 24... Nxb2 25. exf7+ Kxf7 26. Rd7+ Kg8 27. Ra2
$11) (24... Rxb2 25. e5) 25. Bg4 Nxb2 (25... Kf7 26. Rxc4 Ne5 27.
Rcc2) 26. Bxe6+ Kh8 27. Ra3 Ra6 (27... c3 {Is the right way to
maintain the pressure} 28. Rc2 Nd1 29. Bxc5 Rb1) 28. Bf4 (28. Bd5
$11 {Gives White a light square blockade against the queenside pawns and a
defensible position} c3 29. Rc2 h5 {The light square blockade has neutralized
Black's queenside pawns}) 28... c3 ({Black should try} 28... Rf8 29. Rd6
Rxd6 30. Bxd6 Rd8) 29. Rd7 Rf8 {[%mdl 2048] Black has the initiative.}
30. Bb3 (30. Bd5) 30... a4 (30... c4 {...g5 is the strong threat.} 31.
Bc2 Nd3 {[%mdl 512]} 32. Bxd3 cxd3 33. Rxd3 c2) 31. Bc2 Bd4 32. h4 Raf6
33. Bxa4 (33. h5) 33... Rxf4 34. gxf4 {} Ra8 35. Bb3 (35.
Rxc3 Bxc3 36. Bc6) 35... Rxa3 36. Rd8+ Kg7 {Accuracy: White = 47% (16/3/25),
Black = 72% (18/7/27).} 0-1
[Event "TCh-CHN 2019"]
[Site "China CHN"]
[Date "2019.11.23"]
[Round "18.5"]
[White "Bai, Jinshi"]
[Black "Lin, Yi"]
[Result "1-0"]
[ECO "D80"]
[WhiteElo "2600"]
[BlackElo "2425"]
[Annotator "Yip"]
[PlyCount "95"]
[EventDate "2019.04.09"]
[EventType "team"]
[EventRounds "22"]
[EventCountry "CHN"]
[SourceTitle "TWIC 1307"]
[Source "Mark Crowther"]
[SourceDate "2019.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.25"]
[SourceQuality "2"]
[WhiteTeam "Hangzhou Bank Team"]
[BlackTeam "Hangzhou Hongda team"]
{merged with black repertoire -The Safest Grunfeld Reloaded(Delchev-Chess
Stars 2019)} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bg5 Bg7 {An aggressive approach
that gambits the d5-pawn is also considered by Delchev but 4..Ne4 is more
conventional} (4... Ne4 {is the main Delchev recommendation but is not the
only move} 5. Bh4 Nxc3 (5... g5 6. Bg3 h5 7. cxd5 Nxc3 8. bxc3 h4 9. Be5 f6 10.
Qc2 Bg7 11. Nf3 O-O 12. e3 fxe5 13. Nxg5 {1-0 (45) Korobov,A (2670)-Mamedyarov,
S (2772) Bucharest 2019}) 6. bxc3 dxc4 7. e3 Be6 {The c-pawn should be defended
} 8. Nf3 {Not the only move} (8. Qb1) (8. Rb1) (8. Be2) 8... Nd7 (8... Bg7
9. Qb1 b6 (9... Nd7 10. Ng5 Bd5 11. e4 h6 12. Nh3 Bc6 13. Bxc4 O-O 14. O-O Nb6
15. Bb3 Bd7 16. Qd3 c5 17. dxc5 Na4 18. Bxa4 Bxa4 19. Qxd8 Rfxd8 20. Bxe7 Re8
21. Bd6 Rxe4 22. Rac1 Re2 23. Nf4 Rxa2 {1-0 (68) Wei Yi (2736)-Van Foreest,J
(2601) chess.com INT 2019}) 10. Ng5 Bd5 11. e4 h6 12. Nh3 Bb7 13. Bxc4 c5 14.
Nf4 Qd7 15. e5 e6 16. O-O cxd4 17. Bf6 Bxf6 18. exf6 Nc6 19. Re1 O-O-O 20.
Nxe6 Rde8 21. Nxd4 Nxd4 22. cxd4 Qxd4 23. Bxf7 Rxe1+ 24. Qxe1 Qxf6 25. Rc1+ Kb8
26. Bxg6 Rg8 27. Be4 Re8 28. f3 Bxe4 29. fxe4 Qd4+ 30. Kh1 Rxe4 31. Qg3+ Qe5
32. Qg8+ Qe8 33. Qg3+ Ka8 34. Qf3 Qc6 35. Rd1 Kb7 36. h3 Re7 37. Qf5 a5 38. Qf4
Re6 39. Qf7+ Ka6 40. Rd7 Qc4 41. Qf2 Re2 42. Qf3 Rxa2 43. Qa8+ Kb5 44. Qe8 Qf1+
{0-1 (44) Wei Yi (2736)-Vachier Lagrave,M (2780) Abidjan CIV 2019}) 9. Be2 Nb6
(9... Bg7 10. O-O O-O 11. Qc2 h6 12. Rfd1 Nb6 13. a4 a5 14. Nd2 Qe8 15. Ne4 Bf5
16. g4 Bxe4 17. Qxe4 Nxa4 18. Rdc1 e5 19. Bxc4 Nb6 20. Ba2 exd4 21. Qxg6 Kh8
22. Qh5 dxe3 23. Bf6 exf2+ 24. Kxf2 Bxf6 25. Qxh6+ Kg8 26. Bb1 Bh4+ 27. Qxh4 f5
28. Qg5+ {1-0 (28) Wei Yi (2736)-Van Foreest,J (2601) chess.com INT 2019}) 10.
O-O Bg7 11. a4 {The a4-pawn can be targeted for counterplay} (11. e4 {Taking
the centre is another option} O-O 12. Qc2 Qe8 13. Bg3 Qa4 14. Qd2 Rac8)
11... a5 12. Qc2 O-O 13. Rfb1 Qe8 14. Bg3 Bd7 15. Bd1 Qd8 {etc[Delchev]}) 5.
Bxf6 Bxf6 6. cxd5 c5 {Increasing the pressure on the d4-pawn} (6... c6 {
is the Delchev approach} 7. Rc1 {Not the only move} (7. dxc6) (7. e3) (7. e4
) 7... O-O 8. dxc6 Qxd4 9. Qxd4 Bxd4 10. cxb7 Bxb7 11. Nf3 Bf6 {[Delchev]}) 7.
dxc5 (7. Nf3 {is interesting.} cxd4 (7... Qb6 8. e3 cxd4 9. Bb5+ Bd7 10. Nxd4
Bxb5 11. Ndxb5 Bxc3+ 12. Nxc3 Qxb2 13. Rc1) 8. Nxd4 Qb6 9. Nb3 O-O 10. Rc1 Rd8
11. e4 e6 12. Bc4 Qb4 13. Qe2 b5 14. Bxb5 exd5 15. O-O Bxc3 16. Rxc3 dxe4 17.
Rd1 Rxd1+ 18. Qxd1 Be6 19. Qd8+ Kg7 20. Qd4+ Qxd4 21. Nxd4 Bxa2 22. Rc8 Bd5 23.
Nc6 a6 24. Ba4 Nxc6 25. Rxa8 Nb4 26. Rb8 Nd3 27. Kf1 {1-0 (86) Xiong,J (2672)
-Mikhalevski,V (2581) chess.com INT 2019}) 7... Nd7 8. e3 (8. Nf3 {tr 9.Nf3})
8... O-O 9. Bc4 (9. Nf3 Nxc5 10. Nd4 Qa5 11. Bb5 Ne4 12. Qa4 Qxa4 13. Bxa4
Bxd4 14. exd4 Nf6 15. O-O Rd8 16. Rfe1 e6 17. dxe6 Bxe6 18. Rad1 Rac8 19. f3 a6
20. Rd2 Kf8 21. Kf2 h5 22. h4 Nd5 23. Nxd5 Bxd5 24. a3 Rd6 25. Bc2 Rcd8 26.
Red1 Rb6 27. Bb1 Rbd6 28. Rc1 R6d7 29. Rc5 Re7 30. a4 b6 31. Rc3 Red7 32. Ke3
Re7+ 33. Kf4 Rd6 34. Bd3 a5 35. Bb5 Kg7 36. Kg3 Re1 37. Rc7 Kf6 38. Rc3 Ra1 39.
b3 Rb1 40. Rdd3 Rb2 41. Bc4 Bxc4 42. Rxc4 Ke6 43. Rc7 f6 44. Rg7 Kf5 45. d5 Re2
46. Rd4 g5 47. hxg5 fxg5 48. Rh7 Kg6 49. Rc7 Kf5 50. Rh7 Kg6 51. Rb7 Kf5 52. b4
Ke5 53. Rd1 Ra2 54. bxa5 bxa5 55. Re7+ Kf6 56. Re4 Rb6 57. Ree1 Rbb2 58. Rg1
Rd2 59. d6 Ke6 60. Rb1 Kxd6 61. Rb6+ Ke5 62. Kh3 g4+ {1/2-1/2 (62) Korobov,A
(2679)-Gupta,A (2609) Khanty-Mansiysk RUS 2019}) 9... Nxc5 10. Nge2 Qb6 (10...
Qa5 11. O-O Qb4 12. Bb3 Bg4 13. f3 Bd7 14. Kh1 Bb5 15. Nxb5 Qxb5 16. Nd4
Qb6 17. Qd2 Nxb3 18. Nxb3 Rfd8 19. e4 a5 20. Rac1 a4 21. Nc5 Bxb2 22. Rb1 a3
23. Nd3 Ra5 24. Nxb2 Rb5 25. h3 axb2 26. Rf2 e6 27. a4 Rb3 {1/2-1/2 (27) Xu,Y
(2548)-Vidit,S (2707) Xingtai CHN 2019}) 11. Qd2 (11. Bb3 Rd8 12. Nd4 Qb4
13. O-O Bxd4 14. exd4 Nxb3 15. axb3 b5 16. Qe2 Bb7 17. Qxb5 Qxb5 18. Nxb5 Bxd5
19. Nc7 Rab8 20. Nxd5 Rxd5 21. Rxa7 Rxb3 22. Rxe7 Rxb2 23. Re4 Rd2 24. g3 Kg7
25. Rfe1 R5xd4 26. Rxd4 Rxd4 27. h4 h5 28. Kg2 Ra4 29. Re3 Rb4 30. Kf3 Rb2 {
1/2-1/2 (30) Akobian,V (2641)-Robson,R (2682) Saint Louis USA 2018}) 11... Bf5
(11... Qb4 12. b3 Bg4 13. f3 Bd7 14. Rc1 b5 15. Nxb5 a5 16. Nbd4 Qb6 17. O-O
Rfd8 18. a4 Rab8 19. Rfd1 e6 20. dxe6 Bxe6 21. Bxe6 Nxe6 22. Rc3 Rd7 23. Rc6
Qxc6 24. Nxc6 Rxd2 25. Rxd2 Rxb3 26. Nxa5 Ra3 27. Nc4 {1/2-1/2 (27) Khairullin,
I (2652)-Nepomniachtchi,I (2705) Berlin GER 2015}) (11... Bd7 12. Nd4 Rac8 13.
O-O Qb4 14. Be2 Na4 15. Rab1 Rfd8 16. Rfc1 Nxc3 17. bxc3 Qa5 18. Rxb7 Qxd5 19.
Bf3 Qa5 20. Qb2 Be8 21. h3 Rd6 22. Rb8 Rxb8 23. Qxb8 Rd8 24. Qb2 Kg7 25. Bc6
Qc7 26. Bxe8 Rxe8 27. c4 Qc5 28. Qd2 e5 29. Nb3 Qc6 30. c5 Rd8 31. Qc3 e4 32.
Nd4 Qd5 33. c6 Qxa2 34. c7 Rc8 35. Qc5 Qb2 36. g3 Be7 37. Qe5+ Bf6 38. Qc5 Be7
39. Qc6 Bd6 40. Rc2 Qb6 41. Qd7 Rxc7 42. Ne6+ Kh6 43. Rxc7 Bxc7 44. Qxf7 {
1-0 (44) Gorovets,A (2522)-Robson,R (2675) Kenner USA 2016}) 12. O-O (12. Nd4
Rac8 13. O-O Ne4 14. Qe2 Bxd4 {1/2-1/2 (14) Mamedyarov,S (2766)-Nepomniachtchi,
I (2749) Sharjah UAE 2017}) 12... Rac8 (12... Qb4 13. b3 Na4) 13. Rac1
Rfd8 (13... g5) 14. b3 ({Better is} 14. Rfd1) 14... a6 (14...
Qa5 15. h3) 15. Rfd1 (15. Nd4 Ne4 16. Nxe4 Bxe4 17. Rfd1 Kg7 18. Ne2 {
Smirnov,A (2482)-Barbosa,E (2509) Baku AZE 2016} e6) (15. h3 {Can be
considered}) 15... Qd6 {The queen is poorly placed and makes an
ineffective blockader} (15... Qa5 {Is a plausible improvement} 16. e4 {Taking
over the centre is the most ambitious} (16. Nd4 b5 17. Bf1 {Allowing Nce2 is a
better retreat} (17. Be2 b4 18. Na4 Bxd4 19. Qxd4 Nxa4 20. Rxc8 Rxc8 21.
bxa4 Qxa4 22. e4 Bd7) 17... b4 18. Nce2) (16. a4 {contesting the ..b5
advance is equal} b5 17. axb5 axb5 18. Nxb5 Nxb3 19. Bxb3 Qxb5 20. Rxc8 Rxc8
21. Qa2 Bd7 22. h3 (22. Ng3 Bg7)) 16... Bg4 17. f3 b5 18. fxg4 bxc4 19.
bxc4) (15... g5 {Allows the retreat ..Bg6}) 16. Ng3 {Black now starts
to overcommit his pawns which gives numerous weaknesses to target} b5 {This
looks active but Black is struggling to get enough compensation for the pawn}
17. Bf1 b4 (17... Qe5 18. Nce2 Bd7 19. Qa5 {White has some looming
pressure on the queenside}) (17... Bg7 18. b4 Nd7 19. Nxf5 gxf5 20. Ne2)
18. Nce2 {White is in control and Black has problems finding a good plan}
a5 19. Nxf5 gxf5 20. Ng3 {Black's poor kingside structure gives White close to
a winning advantage} Ne4 {The only move} (20... e6 21. Qe2) 21. Nxe4
fxe4 22. Rxc8 {Unnecessary simplification} (22. Rc4 {Just attacking the
weak e4-pawn is promising} Rxc4 23. bxc4 Qe5 (23... Kg7 24. g3) 24. Qc2 Kg7
25. Qa4 (25. Rd4) 25... Qc7 26. g3 {/\Bg2 and Black continues to have
problems with weak pawns} (26. h3)) 22... Rxc8 23. Qe2 {And now Qg4+ would
win.} Qd7 {} (23... Bg7 {Is an improvement but Black is still
suffering} 24. g3 Qe5 25. Rd4 Qf5 26. Rc4 Rd8 27. Bg2 Qxd5 28. Bxe4 Qd1+ (28...
Qd2 29. Kf1) 29. Qxd1 Rxd1+ 30. Kg2 Rd2 31. Rc8+ Bf8 32. Bxh7+ Kg7 33.
h4) 24. d6 {[%mdl 576] Hoping for dxe7. Deflection} exd6 {} (
24... Rc5 25. dxe7 Qxe7) 25. Rxd6 {[%mdl 512] Exploits the vulnerable
Rc8 and open kingside} Qxd6 26. Qg4+ {[%mdl 64] Double Attack wins the loose
Rc8} Bg7 27. Qxc8+ Bf8 28. Qg4+ Qg6 29. Qd7 Kg7 30. Bc4 Qf6 31. g3 Be7 32. Bd5
(32. Qd5) 32... Qf3 (32... Qa1+ 33. Kg2 Qd1) 33. Bc6 ({Not} 33. Qxe7
Qd1+ 34. Kg2 Qxd5) (33. Bc4 Qf6 34. Qd5) 33... Bg5 (33... Bf6 34.
Qd5 Bc3) 34. Qd4+ (34. Qd2) 34... Qf6 (34... Bf6 {keeps fighting.}
35. Qxe4 (35. Bxe4 Bxd4 36. Bxf3 Bf6) 35... Qxe4 36. Bxe4 h6) 35. Qxf6+ ({
Weaker is} 35. Bxe4 Qxd4 36. exd4 Bf6) (35. Qc5) 35... Bxf6 36.
Bxe4 {[%mdl 4096] Endgame KB-KB} h6 37. f4 Bb2 38. Kf2 Kf8 (38... Bf6
$16 {was called for.} 39. Kf3 Bd8) 39. Kf3 Bc1 40. Bd5 Ke7 (40... f6 41. e4
Kg7) 41. e4 {White is clearly winning.} f6 42. Kg4 Be3 43. Kf5 Bg1 {} 44. h3
$1 Bd4 (44... Bh2 45. g4 Kf8) 45. g4 Kd6 46. h4 Be3 47. Kxf6 Bxf4 48. g5 {
Accuracy: White = 54% (21/9/41), Black = 39% (10/11/37).} 1-0