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Juan Corzo vs David Janowski
Havana (1913), Havana CUB, rd 3, Feb-18
Italian Game: Classical. De la Bourdonnais Variation (C53)  ·  1/2-1/2



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Kibitzer's Corner
Dec-26-05  Whitehat1963: One of them missed a win in the endgame. I'm all but sure of it. Can someone spot a mistake?
Dec-26-05  Assassinater: Saying that they missed a win in a queen and pawn endgame is kind of hard to spot for humans. IT's the type of thing that computers will be able to do, but humans will almost never be able to solve OTB.

Now, as to the rook endgame, I would prefer 38... Kd6, to prevent white from getting his passed pawn and the counterplay that he got in the game.

Premium Chessgames Member
  beatgiant: <Assassinater>
<I would prefer 38... Kd6, to prevent white from getting his passed pawn>

38...Kd6 is not legal (black's pawn is already on d6). You must mean 38...Kd7 (not 38...Kd5 39. Rh5+ with skewer), but that merely repeats the position after 38...Kd7 39. Rh7+, K moves 40. Re6.

I still haven't found the missed win here. I tried looking at 43...a5 44. f7 Rxf7 45. Kxf7 but that looked drawish too (White's king is close enough).

Premium Chessgames Member

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Generally, the defender loses in Q&P vs Q endings when the P is a centre pawn unless his King is in front of the pawn. There is, however, a second defensive option sometimes: attacking the pawn from the rear with the King. This is what saves Janowski here: 55 Qf3+ Kc2 56 Ke5 was a key idea.

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But Janowski departed from the plan here. He played 59 Kf5 instead of 59 Ke6 or 59 Kd6 keeping tabs on the d-pawn. Corzo was then winning to here:

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Black’s King shelters from checks after 68..Kd1 69 Qg4+ Kc1 70 Qc8+ Qc2 71 Qd7 Qc4+ 72 Ke1 d4 and the pawn advances.

Corzo chose the inferior 68..Kc1 allowing 69 Qc6+ and if 69..Kd1 70 Qa4+

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