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Bonnerjee Mohishunder vs John Cochrane
Calcutta (1859)
Italian Game: Classical Variation. Albin Gambit (C53)  ·  1/2-1/2

ANALYSIS [x]

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Kibitzer's Corner
Jan-04-15
Premium Chessgames Member
  offramp: Am I missing something aftr 37.Rdd5?


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How about the fork 37...c6?

Play goes to a ♖-ending, which Mahesh plays well. After 57.Rc4xb4 we have this position:


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...white is 2 pawns up but they are doubled.

But after some toing and froing Chandra reaches this position, after 69...Ke4:


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But soon white seems to hit a brick wall. Unable to find a win, he takes black's diseased g-pawn,


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...90.Rxg5, thereby giving up his colossal h-pawn: leaving the following drawn position:


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But was there a win anywhere? From that previous diagram, with the h-pawn, how about carrying on forward with the king?

Play might go 90. Kd4 Kf6 91. Rb7 Rd8+ 92. Ke4 Re8+ 93. Kd5 Rd8+ 94. Kc6 Rc8+ 95. Rc7 Rh8 96. Kd6 Rd8+ 97. Rd7 Rh8


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... and I don't think white can make progress.

A draw was a fair result.

Jan-04-15
Premium Chessgames Member
  beatgiant: <offramp>
Most likely there is a mistake in the game score, and White's actual move was 37. Re1.
Jan-04-15
Premium Chessgames Member
  beatgiant: I think 62. h6 was premature. Instead White should first drive Black's king farther away from the pawns. For example 62. Re6+ or 62. Rf6 look stronger. I'm not yet sure whether it's enough for a White win though.
Jan-05-15
Premium Chessgames Member
  beatgiant: I've looked at 62. Rf6 in more depth now, and I think White wins.

The threat is 63. Rf5 Rxf5 64. gxf5 Kxf5 <65. g4+>.

I see nothing better than 62. Rf6 Ra2+ 63. Rf2 Ra8 64. Rf5 Rg8. Now White aims to bring his king across: 65. Kf2 Rg7 66. Ke2 Kd4 67. Kd2 Rg8 68. Kc2 Kc4 69. Ra5


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I don't see a defense for Black here.

If 69...Rg7, now finally <70. h6> Rh7 71. Rxg5 Rxh6, and with Black's king so far away, this is a tablebase win for White.

Or if 69...Kd4 70. Kb3, White's king gets across and the g-pawn eventually falls.

Or if 69...Kb4 70. Ra6 and I don't see a defense to 71. Rg6.

Jan-05-15  Nerwal: Tarrasch proved (only in 1908, though) that these rook endgames with the defending king cut at e4 are always won :


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And an extra g pawn doesn't hurt White at all (for instance it takes f4 away from the black king).

Which means White misplayed the endgame and bringing the king to the queenside was a faulty plan : 70. ♖xg5 and moves alike during the course of the game are still a win for White, although 62. ♖e6+ ♔d4 63. ♖f6 and 62. ♖f6 were indeed probably quicker and simpler.

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