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Krishnan Sasikiran vs Anh Khoi Nguyen
Asian Nations Cup (2016), Abu Dhabi AUE, rd 9, Apr-05
Queen Pawn Game: Torre Attack. Gruenfeld Variation Main Line (D03)  ·  1-0


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Kibitzer's Corner
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Premium Chessgames Member
  malt: looked at 20.Nb6 first then

<20 Bc2 Qc6> (20..Q:a2 is self destruction 21.Bb3 )(20...Bc6 blocks the Queens escape route 21.Qd3) 21.Qf4 Bg7 (21..Kg7)

Nov-10-17  mel gibson: No I didn't see it -
the computer agrees with only the first move of the solution and plays a much stronger Black defense but
is still down more than 2 pawns after 21 plies:

20. Bc2
(20. Bc2 (♗d3-c2 ♗d7-c6 ♕e4-d3 ♕a4xa2 ♗c2-b3 ♕a2xb1 ♕d3xb1 b7-b5 ♘c4-a5 ♗c6-d7 ♗b3-c2 ♗f6-c3 ♕b1-a2 ♖a8-b8 ♖d1-c1 ♗c3-g7 ♗c2-e4 ♖b8-b6 ♘a5-b7 ♗d7-c8 ♕a2-a5 ♗c8xb7 ♕a5xb6 ♗b7xe4 ♕b6xa6 b5-b4 ♕a6-b5 ♖e8-d8 ♘f3-d2 ♗e4-d5 ♖c1xc5) +2.42/21 128)

score for White +2.42 depth 21

Nov-10-17  Patriot: <patzer2> I probably would've played Nb6 seeing that I'm at least winning a pawn back. I also examined 20.Bc2 but didn't see the point after 20...Qc6. The trick is the loose bishop, the weakly guarded f7, and the tricky knights. Expunging the queen from that rank was necessary to make it all work.
Nov-10-17  Afroim: I saw first two moves, because they give opportunity to attack black Quin again, but I was doing this by 22.Be4 instead of 22.Ne5.
Nov-10-17  lzromeu: 28...Ng6 29. Qf7+ Kh8 30. Nf6 Rg8 31. Qh7#
Premium Chessgames Member
  cormier: 1) +0.07 (33 ply) 2.c4 e6 3.Nf3 b6 4.a3 d5 5.cxd5 exd5 6.Nc3 Bb7 7.g3 Be7 8.Bg2 O-O 9.O-O Ne4 10.Nxe4 dxe4 11.Ne5 f6 12.Nc4 f5 13.b4 Nc6 14.Bb2 Bf6 15.Ne5 Ne7 16.f3 exf3 17.Bxf3 Bxf3 18.Rxf3 Bxe5 19.dxe5

2) +0.04 (33 ply) 2.a3 d5

3) =0.00 (33 ply) 2.h3 d5 3.e3 e6 4.b3 c5 5.Nf3 Nc6 6.Bd3 cxd4 7.exd4 Bd6 8.O-O b6 9.Nc3 O-O 10.Nb5 Be7 11.c3 Bb7 12.Re1 h6 13.Na3 Rc8 14.Qe2 Bd6 15.Nb5 Be7 16.Bb2 a6 17.Na3 b5 18.Nc2

4) +0.05 (32 ply) 2.Nf3 e6 3.c4 b6 4.Bf4 Bb4+ 5.Nc3 Bb7 6.e3 h6 7.Rc1 O-O 8.Bd3 d6 9.O-O Bxc3 10.Rxc3 Nh5 11.Bc2 Nd7 12.h3 Nxf4 13.exf4 Nf6 14.Re3 c5 15.f5 exf5 16.Bxf5 d5 17.Rfe1 dxc4 18.dxc5 bxc5

5) +0.02 (32 ply) 2.e3 e6 3.Nf3 d5 4.c4 b6 5.b3 Bd6 6.Bb2 O-O 7.Nbd2 Nbd7 8.Be2 Bb7 9.O-O Rc8 10.h3 h6 11.Ne5 c5 12.cxd5 exd5 13.Bb5 cxd4 14.exd4 a6 15.Bd3 Ne4 16.Rc1 Ndf6 17.Ndf3 Re8 18.Re1

6) -0.01 (32 ply) 2.Bf4 c5 3.e3 d5 4.Nf3 Nc6 5.c3 e6 6.Nbd2 Bd6 7.dxc5 Bxc5 8.Bd3 O-O 9.O-O h6 10.h3 Bd6 11.Bxd6 Qxd6 12.e4 Rd8 13.Qe2 dxe4 14.Bxe4 b6 15.Rad1 Bb7 16.Bc2 Qc7 17.Rfe1 Rac8 18.Nb3 Rxd1 19.Rxd1 Rd8 20.Rxd8+ Nxd8

1.5 hour analysis by Stockfish 8

Premium Chessgames Member
  cormier: 1) +0.08 (32 ply) 2...b6 3.c4 e6 4.g3 Ba6 5.Nbd2 Bb4 6.Qc2 Bb7 7.Bg2 Be4 8.Qd1 O-O 9.O-O Bxd2 10.Qxd2 a5 11.b3 h6 12.e3 d6 13.Bb2 a4 14.b4 Nbd7 15.Bc3 Bb7 16.b5 Ne4 17.Qd3 Nxc3 18.Qxc3 Be4

2) +0.12 (32 ply) 2...d5 3.c4 c6 4.cxd5 cxd5 5.Nc3 a6 6.Bf4 Nc6 7.e3 Bg4 8.Be2 e6 9.O-O Bxf3 10.Bxf3 Bd6 11.Bxd6 Qxd6 12.Na4 Nd7 13.Rc1 O-O 14.Qb3 Na5 15.Qc3 Nc6 16.g3 Qe7 17.Nc5 Nxc5 18.Qxc5 Rac8

3) +0.14 (32 ply) 2...e6 3.c4 b6 4.g3 Ba6 5.Nbd2 d5 6.Bg2 Be7 7.Ne5 O-O 8.O-O c5 9.e3 cxd4 10.exd4 Bb7 11.b3 Nbd7 12.Bb2 Rc8 13.Re1 h6 14.Qe2 Bd6 15.Bc3 Re8 16.f4 Rc7 17.Rad1 Qe7 18.Bb2 Rec8

4) +0.31 (32 ply) 2...c5 3.d5

5) +0.25 (31 ply) 2...h6 3.c4 e6 4.Bf4 Bb4+ 5.Nbd2 O-O 6.a3 Bxd2+ 7.Nxd2 d6 8.e3 Qe7 9.h3 e5 10.dxe5 dxe5 11.Bg3 c5 12.Qc2 e4 13.Be2 Bf5 14.O-O b6 15.Qc3 Nc6 16.Rad1 a5 17.Bh4 Rfd8 18.Bxf6 Qxf6 19.Qxf6

6) +0.27 (31 ply) 2...c6 3.Bf4 d5 4.e3 Bg4 5.c4 Nbd7 6.Nc3 e6 7.cxd5 exd5 8.h3 Bf5 9.g4 Be4 10.Nxe4 dxe4 11.Nd2 Bb4 12.Bg2 O-O 13.O-O Bxd2 14.Qxd2 Qe7 15.Qc2 Rfe8 16.Qb3 Nb6 17.Be5 Nbd5 18.a3 h6 19.Rae1

60.0 minute analysis by Stockfish 8

Premium Chessgames Member
  cormier: 1) +0.29 (35 ply) 3.c4 Bg7 4.Nc3 d5 5.cxd5 Nxd5 6.e4 Nxc3 7.bxc3 O-O 8.Be2 c5 9.O-O b6 10.Rb1 Bb7 11.Qd3 e6 12.Bg5 Qd7 13.h3 Qa4 14.Qe3 Bc6 15.Bd3 Nd7 16.Qc1 f5 17.Bc2 Qa6 18.Re1 Rae8 19.Qd2 Qxa2 20.exf5 Bxf3 21.fxg6

2) +0.20 (34 ply) 3.Nbd2 d5 4.e3 Bg7 5.b4 a5 6.b5 c5 7.bxc6 Nxc6 8.Be2 O-O 9.c4 Be6 10.cxd5 Nxd5 11.Bb2 Nf6 12.O-O Qb6 13.Ba3 Nb4 14.Qa4 Bxa2 15.Rfc1 Bd5 16.Ne5 Qd6 17.Nd3 Bc6 18.Bxb4 axb4 19.Qxa8 Rxa8 20.Rxa8+ Bf8 21.Bf3

3) +0.06 (34 ply) 3.h3 Bg7 4.c4 O-O 5.Nc3 d5 6.cxd5 Nxd5 7.e4 Nxc3 8.bxc3 c5 9.Be2 cxd4 10.cxd4 Nc6 11.Be3 f5 12.Bc4+ e6 13.exf5 gxf5 14.Rc1 f4 15.Bd2 Nxd4 16.Bc3 b5 17.Bd3 Nxf3+ 18.Qxf3 Bxc3+ 19.Rxc3 Qa5 20.Be4 Rb8 21.O-O b4 22.Rcc1 Ba6

60.0 minute analysis by Stockfish 8

Nov-10-17  johnnyb3: Toughie. I decided that OTB I'd have played Bc2 Qc6 21. Rxb7, but I was pretty sure that wasn't it.
Premium Chessgames Member
  cormier: 1) +0.06 (30 ply) 4...c5 5.e3 cxd4 6.exd4 O-O 7.c3 h6 8.Bh4 Nc6 9.h3 d5 10.Bd3 Qb6 11.Rb1 Bf5 12.Bxf5 gxf5 13.Bxf6 Bxf6 14.Qb3 e6 15.Qxb6 axb6 16.a3 Rfc8 17.Ke2 Kg7 18.Rbe1 Ne7 19.Kd3 b5 20.Kc2

2) +0.09 (29 ply) 4...d5 5.e3 O-O 6.c3 b6 7.Bh4 Bb7 8.h3 c5 9.Bb5 Nc6 10.O-O Rc8 11.Bd3 e6 12.Ne5 Qc7 13.Nxc6 Qxc6 14.a4 c4 15.Bc2 Rfe8 16.Nf3 Ne4 17.a5 Qc7 18.axb6 Qxb6

3) +0.04 (29 ply) 4...h6 5.Bh4

4) +0.12 (29 ply) 4...d6 5.c3 h6 6.Bh4 O-O 7.h3 Nc6 8.e3 e5 9.Be2 Re8 10.Ne4 g5 11.Nxf6+ Qxf6 12.Bg3 Bf5 13.O-O Bg6 14.Rc1 Rab8 15.Qa4 a6 16.Qd1 Rbd8 17.Qb3 Rb8 18.Rfd1 exd4 19.cxd4 Qf5

5) +0.14 (29 ply) 4...Nc6 5.c3 h6 6.Bh4 d6 7.h3 e5 8.e3 O-O 9.Be2 Re8 10.Ne4 g5 11.Nxf6+ Qxf6 12.Bg3 Bf5 13.O-O h5 14.Nd2 h4 15.d5 Ne7 16.e4 Bd7 17.Bh2 c6 18.Qa4 b5 19.Qb3 Rab8 20.dxc6 Bxc6

15.0 minute analysis by Stockfish 8

Premium Chessgames Member
  cormier: 1) +0.06 (27 ply) 5.c3 O-O 6.e3 h6 7.Bh4 b6 8.h3 Bb7 9.Be2 c5 10.O-O Nc6 11.Ne5 e6 12.Nxc6 Bxc6 13.Bg3 Qe7 14.a4 Rfd8 15.a5 Ne4 16.Nxe4 dxe4 17.axb6 axb6 18.Rxa8 Rxa8

2) +0.04 (27 ply) 5.e3 b6 6.c4 O-O 7.cxd5 Nxd5 8.Bc4 h6 9.Bh4 Bb7 10.O-O c5 11.dxc5 Bxb2 12.Rb1 Bg7 13.Qb3 Nc3 14.Rbc1 b5 15.Rxc3 Bxc3 16.Qxb5 Bc6 17.Qb1 Kh8 18.Qb3 Bxd2 19.Qb2+ f6 20.Nxd2 Nd7

3) =0.00 (27 ply) 5.h3 Ne4 6.Bf4 c5 7.e3 Qb6 8.c4 cxd4 9.exd4 Qxb2 10.Rb1 Qxa2 11.Ra1 Qb2 12.Rb1 Qc3 13.cxd5 O-O 14.Rb3 Qa5 15.Rb5 Qc3 16.Rb3

4) -0.19 (27 ply) 5.Rc1 c5

10.0 minute analysis by Stockfish 8

Premium Chessgames Member
  cormier: 1) =0.00 (29 ply) 5...c5 6.c3 h6 7.Bf4 O-O 8.h3 b6 9.Bd3 Nc6 10.O-O e6 11.Bc2 Ba6 12.Re1 Rc8 13.Ne5 Ne7 14.Nef3 Nc6

2) =0.00 (28 ply) 5...h6 6.Bh4 O-O 7.c3 Nbd7 8.h3 c5 9.Be2 Nh5 10.Nh2 Nhf6 11.Nhf3

3) =0.00 (28 ply) 5...O-O 6.c3 Nbd7 7.h3 c5 8.Be2 Nh5 9.Bh4 h6 10.Nh2 Nhf6 11.Nhf3 Nh5

4) +0.02 (28 ply) 5...Nbd7 6.c4 c5 7.cxd5 Nxd5 8.Bc4 N5b6 9.Bb3 cxd4 10.exd4 O-O 11.O-O Nf6 12.Re1 h6 13.Bh4 Bf5 14.h3 Nbd5 15.Nc4 Be6 16.Nce5 Qd6 17.a3 Nf4 18.Bg3 N6h5 19.Bh2 Rac8

10.0 minute analysis by Stockfish 8

Premium Chessgames Member
  cormier: 1) +0.18 (28 ply) 6.Rc1 h6 7.Bh4 c5 8.dxc5 Qa5 9.c4 Nbd7 10.cxd5 Nxc5 11.Bc4 Qb4 12.O-O Qxb2 13.Be2 b6 14.Nc4 Qxa2 15.d6 exd6 16.Nd4 Qa4 17.Bxf6 Bxf6 18.Qxa4 Nxa4 19.Nxd6 Rd8 20.Bf3 Nc5

2) +0.06 (28 ply) 6.c3 h6 7.Bh4 Nbd7 8.h3 c5 9.Be2 Nh5 10.g4 Nhf6 11.O-O b6 12.Ne5 Bb7 13.f4 Rc8 14.Bb5 a6 15.Bd3 Nxe5 16.dxe5 Ne4 17.Nxe4 dxe4 18.Bc2 g5 19.fxg5 hxg5 20.Bxg5 Bxe5

3) =0.00 (28 ply) 6.Be2 h6

4) =0.00 (27 ply) 6.h3 c5 7.c3 b6 8.Bd3 h6 9.Bh4 Bb7 10.Bc2 Nc6 11.O-O e6 12.Rc1 Ne7 13.Bg3 Nf5 14.Be5 c4 15.Re1 Nd6 16.Rf1 Rb8 17.Qe2 Rc8 18.Rce1 Bc6 19.Rd1 Bb7

8.0 minute analysis by Stockfish 8

Premium Chessgames Member
  cormier: 1) -0.04 (28 ply) 6...c5 7.c3 b6 8.O-O Nc6 9.Bb5 Bb7 10.Bh4 e6 11.h3 h6 12.Ne5 Qc7 13.Nxc6 Bxc6 14.Bg3 Qd7 15.Bd3 Qe7 16.a4 Rfc8 17.Be2 a5 18.Qc2 Nd7 19.Nf3 e5 20.dxe5 Nxe5 21.Nxe5 Bxe5

2) =0.00 (28 ply) 6...h6 7.Bf4 c5 8.h3 b6 9.O-O Bb7 10.dxc5 bxc5 11.c4 Nbd7 12.Rc1 Re8 13.Ne5 e6 14.Qb3 Qb6 15.Rfd1 Re7 16.Qc2 Rc8 17.Qc3 Qd8 18.Qb3 Qb6 19.Qc3

3) =0.00 (28 ply) 6...Nbd7 7.h3 c5 8.Bf4 b6 9.O-O Ne4 10.a4 Bb7 11.a5 Bc6 12.Nxe4 dxe4 13.Ne5 Nxe5 14.dxe5 Qc8 15.c3 Qe6 16.Bg4 Qc4 17.Be2 Qe6

4) +0.04 (28 ply) 6...b6 7.O-O Bb7 8.c3 c5 9.Bh4 Nc6 10.h3 e6 11.Ne5 Qc7 12.Nxc6 Bxc6 13.a4 a5 14.Re1 Rfe8 15.Bb5 Rac8 16.Qe2 Nd7 17.Nf3 f6 18.Bg3 e5 19.Nd2 f5 20.Nf3

5) +0.11 (27 ply) 6...Be6 7.O-O Nbd7 8.h3 c5 9.c3 Qb6 10.Qb3 h6 11.Bh4 Qc6 12.Bb5 Qc7 13.Rfc1 a6 14.Be2 Rfc8 15.c4 Qc6 16.Qc2 dxc4 17.e4 b5 18.d5 Nxd5 19.exd5 Bxd5 20.Bg3

10.0 minute analysis by Stockfish 8

Premium Chessgames Member
  cormier: 1) +0.06 (28 ply) 7.h3 h6 8.Bf4 b6 9.O-O Bb7 10.a4 a5 11.c3 Ne4 12.Qc2 Nxd2 13.Qxd2 c5 14.b3 Nf6 15.Qb2 Ne4 16.Be5 e6 17.Bd3 Bxe5 18.Nxe5 cxd4 19.exd4 Kg7 20.Rad1 Qe7 21.Kh1

2) -0.07 (28 ply) 7.c4 h6

3) =0.00 (27 ply) 7.Bh4 c5 8.c3 Ne8 9.Bg3 Nd6 10.a4 b6 11.a5 c4 12.axb6 a5 13.e4 dxe4 14.Ne5 Nxb6 15.Nexc4 Ndxc4 16.Nxc4 Be6 17.Nd2 f5 18.O-O a4 19.Be5 Bxe5 20.dxe5 Bf7 21.h3 Qd5

6.0 minute analysis by Stockfish 8

Premium Chessgames Member
  cormier: 1) -0.21 (24 ply) 7...h6

2) -0.04 (23 ply) 7...c5 8.c4 b6 9.cxd5 Nxd5 10.Bc4 Bb7 11.e4 h6 12.Bxd5 Bxd5 13.Bxh6 Bxh6 14.exd5 cxd4 15.Nxd4 Ne5 16.N2f3 Qxd5 17.Nxe5 Qxe5 18.Nc6 Qd6 19.Qxd6 exd6 20.Ne7+ Kg7

1.0 minute analysis by Stockfish 8

Premium Chessgames Member
  cormier: 1) -0.10 (24 ply) 8.c4 b6 9.cxd5 Nxd5 10.Bc4 Bb7 11.e4 h6 12.Bxd5 Bxd5 13.Bxh6 Bxh6 14.exd5 cxd4 15.Nb3 Nf6 16.Qxd4 Qxd5 17.Rfe1 Qxd4 18.Nfxd4 e6 19.Rad1 Rac8 20.a3

1.0 minute analysis by Stockfish 8

Premium Chessgames Member
  cormier: 1) =0.00 (26 ply) 8...h6 9.Bh4 g5 10.Bg3 Nh5 11.Be5 Nhf6 12.Bg3

30 second analysis by Stockfish 8

Premium Chessgames Member
  cormier: Nov-10-17
Premium Chessgames Member <patzer2>:

P.S.: Black's game appears to take a turn for the worse with 11...h6? 12. Bxf6 (+0.84 @ 29 depth, Stockfish 8).

Instead, 11...cxd4 12. cxd4 e5; (+0.39 @ 30 depth, Stockfish 8) puts up much more resistance.

Earlier in the opening, I prefer the popular move 8...b6 as in Black's win in Kramnik vs Caruana, 2015.

Premium Chessgames Member
  Marmot PFL: Nice attack but too subtle for me to solve. Might have found many of these moves as the game unfolded because they all seem logical.
Nov-10-17  BOSTER: I did not see Bc2. But watching the game I can't say that this a great combo. Even black could play Bg5 not Kg7. Certainly, black game was lost before.
Nov-10-17  Patriot: <BOSTER> <Even black could play Bg5 not Kg7.> 21...Bg5 22.Nxg5 hxg5 23.Qxg5 threatening 24.Ne5 and 25.Qf6 or 25.Qf4.
Premium Chessgames Member
  patzer2: <Patriot> Thanks! Good assessment and description of White's 20th move options. Winning back a pawn with 20. Nb6 was the most I could see when I attempted the puzzle, but I figured there was something bigger I was missing.

White in the game rightly judged the Knight needs to be moving not to the Queenside, but towards the center where it can further harass the Queen and participate in the attack on the weakly protected castled King. White apparently calculated accurately and deeply in playing 20. Bc2! to set up the subsequent Queen and knight moves for his decisive Kingside attack.

Nov-10-17  saturn2: This one no. However I saw that by Bc2 the answer..Qc6 is forced. And that after Qf4 there are only..Bg7 and..Kg7.
Nov-10-17  Patriot: <patzer2> Very true! I think the toughest element in the combination are those sneaky knights. Quiet moves like Qf4 also make it tough.
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