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Georg Marco vs Colonel Moreau
Monte Carlo (1903), Monte Carlo MNC, rd 25, Mar-16
Spanish Game: Berlin Defense. Rio de Janeiro Variation (C67)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
Jul-12-04  mack: Great game.
Jul-21-04  akiba82: Colonel Moreau was able to apply his superior understanding of military strategy to chess with sparkling results.
Jul-21-04  akiba82: Also, Iraq had wmd, a collaborative relationhip with Al Queda, and Iraqi civilians welcomed the American invasion.
Aug-10-09  zb2cr: By move 24, while material is still equal, positionally Black is quite lost.

He has a fatal weakness on the black squares and his pieces are passive. Marco simply has to open a new threat and Black's position comes apart. Marco's technique is instructive.

Aug-11-09  eaglewing: To the contrary: A little bit of scepticism. Didn't Marco give away his advantage or profit from his opponent with 55. Nd3?

I think, it is strange, but how to win the pawn-endgame after 55. Nd3 Bxd3 56. Kxd3 Kd7?

Two lines to show my doubts:
A) 57. Ke4 Ke6 58. b5 cb 59. cb Kd6 60. b6 Kc6 and the Black King moves between b7 and b8. If White moves in with Kc6 it follows Kc8 b7 Kb8 Kb6 stalemate.

B) 57. Ke4 Ke6 58. Kf4 Kd6 59. Kf5 Ke7 60. Ke5 Kd7 and how to progress?

B1) Kf6 c5
B2) c5 Ke7
B3) b5 cb and no win in sight.

Aug-11-09  zb2cr: Hi <eaglewing>,

You may be right. I was not subjecting this game to anything other than casual inspection; to me it seemed that after move 24, Black was restricted to waiting for the blow to fall, since his King would be passive and his Rook buried.

Looking at things in more depth, I note that Black probably had better options than shuffling his Rook back and forth on the a-file at moves 29-33. Getting the Rook to e7 looks better.

Computer-assisted analysis (Crafty v.23) claims that after White played 37. h5 his advantage was +1.70.

Your point about Black taking the distant vertical opposition with the sequence you give is well taken. I don't know if anyone has put this (7-piece) position into the Nalimov tablebases. Without that aid, you're right, I don't think White has it won after the sequences you give.

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