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Ray Robson vs Gata Kamsky
US Championship (2017), St Louis, MO USA, rd 3, Mar-31
Sicilian Defense: Old Sicilian. Open (B32)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Mar-31-17  RookFile: Evidently white can move his king up to d6 and it's the end of the story.
Apr-01-17
Premium Chessgames Member
  drleper: Sending the king up with Ke3 leads to this;


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where black is just out of time for a Q vs N-pawn draw: 64... Kg4 65. e6 f4 66. e7 f3 67. e8=Q f2 68. Qe2+ Kg3 69. Qf1 1-0


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From the start position, if black were able to play Kg3, say like this;


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then it would be an easy draw: 64... Kg3 65. e6 f4 66. e7 f3 67. e8=Q f2 1/2-1/2


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If white was still keen, then maybe something like: 68. Qe3+ Kg2 69. Qe2 Kg1 70. Qe3 Kh1


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and there's no time to bring the white king over.

Apr-01-17
Premium Chessgames Member
  HeMateMe: triangulation. The side with the backward pawn loses.
Apr-01-17
Premium Chessgames Member
  tpstar: The final position is an instructive K&P endgame example for juniors and students:


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1) The Defensive Line is 58 ... Kg7 59. Ke3 Kf7 60. Kd4 Ke7 61. Kc5 Kd7 62. Kb6:


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This is a win for White because the Pe5 controls the d6 square, so the White King can triangulate and gain the Opposition: 62 ... Kd8 63. Kc6 Ke7 64. Kc7 Ke8 65. Kd6 Kf7 66. Kd7 & 67. Kxe6 eating both Pawns.

With the starting Pawn structure, Black's only hope to draw is gaining the Opposition to block the White King out like this:


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White to Play is a draw after 1. Kb5 Kb7 2. Kc5 Kc7 etc. Black to Play loses with 1 ... Kd7 2. Kb6 Kd8 3. Kc6 Ke7 4. Kc7 etc.

"Shouldering"

https://www.ichess.net/2015/05/20/e...

http://www.chessmastery.co.uk/chess...

2) The Counterattack Line with 58 ... Kh6 is covered by <drleper> above.

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