Author: Dan Andersson
Date: 09:58:42 06/25/99
Go up one level in this thread
If a player looks at a position, a mate in one position will look bad if the attacker has sacrificed material. Obviously this does not apply to most and not your program. Mr Alterman must not have looked at whites pawn push d4-d5-d6 and blacks forced replies, there is also one main tacical point that could be missed,the line 45. Kf2 a3 46. Bg4 b5 47. d7 Bxd7 48. Bxd7 b4 49. e6 when black is forced to capture on e6. I would classify this as one of IM David Levys 'never' positions. I.e black will never be able to get his king to whites advanced pawns. I think Levy only considered a statically locked feature a 'never' one (as cloistered bishops and captured queens), but due to contant tactical threats black is forced to remain with his king on the kingside. That said the endgame is conceptually easy to win as white, the black bishop is constrained by the pawn on d6 and the soon to become white square pawns. Get the white king inside the quadrant of the c pawn and simultaneously make black advance and thereby weaken his pawns a4-b5-c4. weak advanced pawns guarded by a bad bishop vs. K and good bishop ,there is always tactics but then again the white concepts are simple. As to earlier in the game on move 41 black had the opportunity to play 41 ... c3 to advance the c pawn then white has two main alternatives 42 Rb7 and 42 Rb8+. 42 Rb7 Rc6 (42 ... Rb6! 43 Rxb6 (43 Rxc7 Rb1 -+) cxb6 44 Bxa4 (44 d5 Kf8 -+) b5 45 Bd1 b4 46 d5 c2 47 Bxc2 Bxc2 -+) 43 Bxa4 c2 44 Bxc2 Rxc2 45 Rb8+ Kh7 46 e6 fxe6 47 f7 Rc1+ 48 Kf2 Rf1+ 49 Ke3 Rxf7 50 Kxd3 Rf2 w. a better position for white, i.e. white can always draw w. 51 Rb7. 42 Rb8+! Kh7 43 d5 c6 44 d6 Bf5 45 Rb7 Be6 46 d7 Ra8 47 Bxa4 Rd8 48 Rc7 Rxd7 49 Rxd7 Bxd7 50 Kf2 +-). It seems to me as black is lost in that position. Earlier in the game 35 ... b4 seems bad, weakening the queenside cohesion. It is opening up the position when the white pieces have more scope, so black need to prepare for it. The black bishop on e4 is not that bad. But in conjunction w. the advanced pawn on f6 fixing a weak pawn f7 and restricting blacks King it is serious. Black position is shaky and white only has one weakness, the pawn chain beginning at c3. Regards Dan
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.