| May-22-05 | | paladin at large: I do not understand how Bogo did not see that he would lose a pawn, with no compensation, in the sequence beginning 27......e5. 28.....Bc6 is not good, but he could not play 28....e4, because of 29. Qe2 with the threat of 30. Qh5. Interesting in the endgame how Rubinstein sends his passed f and h pawns up to glory in tandem. Bogo cannot attack the white king, else he drive the white king to where he wants to go, toward the passed pawns. When the pawns are too far from the white king for him to help them, 59. h6 seals the win. |
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May-28-05
 | | tamar: I don't understand the endgame too well. Bogoljubov passes up taking the a pawn several times and then chooses to defend his pawns laterally with Rd5 and Rd4 which doesn't work. Did he misplay the ending or did Rubinstein win it? |
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| May-28-05 | | paladin at large: Rubinstein already is in good shape with 33. R xe5, but you are right, I do not see Bogo following a consistent line. I do not know if he had to go two pawns down, as with 36....d4, but Rubinstein had the more active rook and Bogo had to try to get counterplay for his rook to have any kind of chance. |
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May-28-05
| | tamar: <paladin at large> Bogo does succeed in getting a passed pawn I guess, but it a sad situation when your best bet is to go into a rook endgame with Rubinstein a pawn down. <Rubinstein sends his passed f and h pawns up to glory in tandem> Yeah that fascinated me. They ascend rank by rank alternating moves. The King is a potential protector for their journey to the fifth rank, but once they reach the sixth rank together, they do not need protecting as one will survive to make it to queen. Further back, I'm not sure if Black could avoid 27...e5 27...Bc8 28 Qe2 Bd7 29 Qh5 f5 30 Re5 Black has the bad bishop and must wait on g4 prying open his position. Other 27th moves invite 28 Bf5 because of the pin on the e file. |
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| May-28-05 | | paladin at large: <tamar>I admit I do not see a good alternative to 27.....e5 either. |
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May-28-05
 | | beatgiant: <tamar>
<Bogoljubov passes up taking the a pawn several times>
But each of those times, it was useless:
41...Rxa2 42. Rb7 remains two pawns up.
Or 44...Rxa2 45. Re5 Rb2 46. Rb5, threatening 47. h3+ Kh5 48. h4 still remains at least two pawns up. Or 45...Rxa2 46. Rb8 remains two pawns up. |
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May-29-05
| | tamar: <beatgiant> True. Never was possible. I thought I saw a trap for Black if 44...Rxa2 45 Re5 Rb2, but it is Black who is ensnared after 46 h3+! Kh5 47 Rb5 Rb1 48 Rxb6 a4 (the trap-Black gets a passed pawn as the b-pawn is pinned) 48 g4+ Kh4 49 Rh6# Bogo wisely avoided that one and the others. |
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| Aug-22-06 | | Dres1: Why is it that no one has mentioned that this is an easy draw with 62...Kc4. Cmon guys, this is basic endgame knowledge. |
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| Aug-22-06 | | euripides: <dres> after <62...Kc4> 63 Kf3 Black can transpose to the game by 63...b3 or play 63...Kc3 64 Ke3 which doesn't look any better. The Nalimov tablebase give both 62...Kc4 and 62...b3 as mates in twenty. |
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| Aug-23-06 | | Dres1: Hmm. im sorry, i think youre right.. i guess white's king is close enough.. which is strage because it doesnt look it. My apologies for the false alarm. |
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| Aug-23-06 | | euripides: <dres> No problem ! The books tend to give R v P positions where the attacking king is coming from behind, rather than from the side, as here (probably because they arise more often in practice). |
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Kibitzing
