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Ian Nepomniachtchi vs Viswanathan Anand
Sinquefield Cup (2019), St Louis, MO USA, rd 1, Aug-17
English Opening: King's English Variation. Kramnik-Shirov Counter (A21)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
Aug-17-19
Premium Chessgames Member
  Bobby Spassky: What a bozo loss!
Aug-17-19
Premium Chessgames Member
  Sally Simpson: ***


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Black has a wee trap here. if 77.a6 then 77..Nc7+ picks up the a-pawn. Having spotted that Nepo relaxes, board blindness creeps in and Nepo plays 77.Kc4.

It's OK. If 77...b5+ 78 axb5 ep and the a-pawn switches to b6 and protects the a7 Rook.

But 78...Nxb6 a square originally protected by a5 pawn, is a CHECK! and it is 0-1.

***

Aug-18-19
Premium Chessgames Member
  Taxman: Yes, if 77.a6, 77...Nc7+ 78.Kb6 b x a6 and then if 79. Rxc7 Rxc7 80.K x c7 15 and the black a-pawn queens.

Also 77.Ra8 Nc7+ picks up the rook.

So 77.Kc5 is the only move. Now, 77...Nf6+ 78.Kb6 looks like a draw. Which leaves 77...Rd7, although then 78.Ra8 Kf5 79. Re8, cutting the White king off, looks drawish.

I stand to be corrected on this, as I'm doing it without electronic assistance.

Aug-18-19
Premium Chessgames Member
  Taxman: Just put it on the computer which points out that 79.a6 is a clearer way to reach a theoretically drawn K+R+N .v. K+R ending.
Aug-18-19  Ulhumbrus: One of the commentators GM Maurice Ashley indicated that Nepomniachtchi lost no less than four tempi by advancing and then withdrawing each of his knights in the opening. After 10 Nf3 White's lead in development has gone. Black gains equality at least and later the advantage and later still a win.

One example of a possible explanation is that Nepomnichtchi thought that otherwise Black might defend successfully and he went too far trying to win.

Aug-18-19
Premium Chessgames Member
  whiteshark: <77.Kc4??> just for the devilment.
Aug-18-19  Philidorable: Nice to see the best players in the world lose games the same way I do, although much, MUCH less frequently.

In any case after 65 moves I usually need a nap.

Aug-18-19
Premium Chessgames Member
  An Englishman: Good Morning: Perhaps we should devote a thought to how well Anand played. After all, he had bad pawns and a Knight v. Bishop on an open board, yet he managed to make White's pawns weaker and his Knight the superior minor piece.
Aug-18-19
Premium Chessgames Member
  Pedro Fernandez: That's correct <Taxman>. 77.Kc5!


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If for instance, 77...b6+ 78.Kxd5 draw!


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(BTW, if now 78...Rh6?? black loses!)

Aug-18-19  7he5haman: <<Pedro>> In your line after 77...b6+ I'm pretty sure 78.axb6 actually wins for White!
Aug-18-19  7he5haman: (Unless 78..Nxb6 79.Rxh7 Na4+ allows the Knight to escape, securing the draw.)
Aug-18-19  7he5haman: (Which I don't think it does after 80.Kd4!)
Aug-19-19
Premium Chessgames Member
  HeMateMe: Nepo is a brilliant combinative player but black is a better endgame player.
Aug-19-19  cormier:


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Analysis by Houdini 4 d 22 dpa done

1. = / + (-0.63): 56.Rc3 Nc6 57.Rf3 Nd4+ 58.Bxd4 Rxd4 59.b3 Rg4 60.Rf5 Kxg3 61.Rxh5 Rxh4 62.Rf5 Rf4 63.Rd5 f5 64.a5 Rf2+ 65.Kd3 Rf1 66.Ke2 Rf4 67.Kd3 Kg4 68.Kc3 Re4 69.Rd7 f4 70.Rg7+ Kh3 71.Rxb7 f3 72.Rf7 Re3+ 73.Kd4 Rxb3 74.Rf6

2. - / + (-0.91): 56.Ba5 Nc6 57.Bb6 Kg2 58.Kc1 Ne5 59.Ba7 b5 60.Bb8 bxa4 61.Ra3 Rd4 62.Kc2 Rg4 63.Re3 Rc4+ 64.Kb1 Rc5 65.Bd6 Rd5 66.Bc7 Rb5 67.Ra3 Rc5 68.Bb6 Rc6 69.Ba7 Rc4 70.Bb8 Rc6 71.Rxa4 Kxg3 72.Ka2 Kf3 73.Ra5 Kf4 74.b3 Kg4 75.Ka3 Kxh4 76.Bxe5 fxe5 77.Rxe5 Kg4 78.Re4+ Kf3 79.Rd4

3. - / + (-0.91): 56.a5 Nc4 57.Bc5 Nxa5 58.Rf3 Rc7 59.b4 Nc6 60.Kd2 Rf7 61.Ke3 Ne5 62.Rf5 Kxg3 63.Rxh5 Ng6 64.b5 a5 65.Rd5 Nxh4 66.Rd1 Rh7 67.Rg1+ Kh2 68.Ra1 Rh5 69.Bd6+ Kg2 70.Bc7 Rxb5 71.Ra2+ Kh3 72.Rxa5 Rxa5 73.Bxa5 Ng6 74.Kf3 b5 75.Bc3 f5 76.Bd2 Kh2 77.Bc3 Kg1

4. - / + (-0.98): 56.Ba7 b5 57.Bb6 Rd6 58.Ba7 bxa4 59.Ra3 Rc6+ 60.Kb1 Rc4 61.Bb8 Rc8 62.Bxe5 fxe5 63.Re3 Rc5 64.Ka2 Kg2 65.Ka3 Kf2 66.Re4 Ra5 67.Kb4 Rb5+ 68.Ka3 Kf3 69.Rxa4 a5 70.b4 axb4+ 71.Kb3 Kxg3

5. - / + (-1.01): 56.Bf2 Kg2 57.Be3 Nf3 58.Rb6 Kxg3 59.Rxf6 Nxh4 60.Kc3 Ng2 61.Ba7 h4 62.Bb8+ Kg4 63.Rg6+ Kf3 64.Rh6 Ke2 65.Kb4 Rd5 66.Bc7 Kd2 67.Rh7 Kc2 68.Bb6 Rd3 69.Rxb7 h3 70.Rh7 Nf4 71.Kc4 Kxb2 72.Bd4+ Kc2 73.Be5 Ng6

so 56.Be3?

Aug-20-19  cormier: D Dubov vs V Erdos, 2019
Aug-20-19  cormier:


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Analysis by Houdini 4 d 25 dpa done

1. = (0.10): 4.Nf3 d6 5.d4 e4 6.Nd2 f5 7.Nxe7 Qxe7 8.e3 Nf6 9.b4 0-0 10.Be2 Be6 11.0-0 c6 12.Bb2 Nbd7 13.Qa4 a6 14.h3 b5 15.Qa5 Rfc8 16.Rac1 Bf7 17.d5 c5 18.bxc5 Nxc5

2. = (0.10): 4.d4 d6 5.Nf3 e4 6.Nd2 f5 7.Nxe7 Qxe7 8.e3 Nf6 9.b4 0-0 10.Be2 Be6 11.0-0 c6 12.Bb2 Nbd7 13.Qa4 a6 14.h3 b5 15.Qa5 Rfc8 16.Rac1 Bf7 17.d5 c5 18.bxc5 Nxc5

Aug-20-19  cormier: i think 26...Bd7 was better ..., the computer and this game is exchanging and loosing the Bs pair or said in another words giving a little positional advantage away .....


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Analysis by Houdini 4 d 23 dpa done

1. = (-0.22): 26...Bxd4 27.Rxd4 Nf5 28.Rf4 Re8 29.Rd1 Rc5 30.Rd2 Kg7 31.Rc2 Rec8 32.Rxc5 Rxc5 33.e4 Ne7 34.exd5 Nxd5 35.Rd4 Nc3+ 36.bxc3 Bxb3 37.Rd7+ Kg6 38.Rxb7 Bd5 39.Rb6 a5 40.Kb2 Bxg2 41.Bf4 Rf5 42.Be3 Bd5 43.Bd4 Bf7 44.Ra6 Rb5+ 45.Kc2

2. + / = (0.62): 26...Bd7 27.e4 Bxd4 28.Rxd4 Kg6 29.Red1 Be6 30.exd5 Bd7 31.Ka2 Nf5 32.Re4 Rc5 33.Bf4 Nxh4 34.Be3 Rcc8 35.g3 Nf5 36.Bb6 Re8 37.Rxe8 Rxe8 38.d6 Kg5 39.Bc2 Re2 40.Bd3 Re6 41.Bb1 Re5 42.b4

Aug-20-19  cormier:


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Analysis by Houdini 4 d 25 dpa done

1. = (-0.10): 23...g5 24.Rd2 Ba5 25.b4 Bb6 26.Red1 Na7 27.Kb2 Nb5 28.Bh2 Nc3 29.Re1 Ne4 30.Rde2 g4 31.Nd4 gxh3 32.Nxe6 Kxe6 33.gxh3 Bc7 34.f4 Bb8 35.Rg2 Rg8 36.Rxg8 Rxg8 37.Rg1 Rxg1 38.Bxg1 Ba7 39.Bd1 Nd2 40.Bxh5 Nc4+ 41.Kc3 Bxe3 42.Bxe3 Nxe3 43.Kd3

2. = (-0.08): 23...d4 24.exd4 Nxd4 25.Nxd4 Bxd4 26.Be4 b5 27.Rd2 Bc5 28.Rdd1 Rxd1+ 29.Rxd1 a5 30.Bb7 Rf8 31.Kc2 Re8 32.Bd5 Bb6 33.Bxe6+ Rxe6 34.Rd7+ Re7 35.Rxe7+ Kxe7 36.Kd3 Ke6 37.f3 Kd5 38.Be1 a4 39.Bb4 h4

Aug-21-19
Premium Chessgames Member
  piltdown man: Yowch.
Aug-23-19
Premium Chessgames Member
  thegoodanarchist: The old Tiger got it done! WTG, Anand!
Aug-23-19
Premium Chessgames Member
  thegoodanarchist: < Sally Simpson: ***

Black has a wee trap here.>

You never want to get your wee trapped. Ouch.

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