An unexamined life is not worth living.

Saturday, May 30, 2009

Opposite Coloured Bishops – part 3

Continuing from part 2, Let's look at some typical ideas:
1) The strength of connected pawns
2) Distant passed pawns
3) Pawn weaknesses
4) Active king
5) Rule of one diagonal
(5) Smyslov Vassily (RUS) - Stein Leonid (UKR)
Ch URS Moscow (Russia), 1969

opposite_bishop_92

37.Bd4 ! Now White effectively has two extra pawns on the kingside. 37...a6 38.Kf4 Ke6 39.Kg5 Kf7 40.Kf4 Ke6 41.Bb6 Bb3 42.g4 hxg4 Diagram

opposite_bishop_93

43.Kxg4 ! 43...Bd1 44.Kf4 Kf7 45.Bd4 Kf8 46.Ke3 Kf7 47.Be5 Ke6 48.Bg3 Kf6 Black makes things harder for White by attacking the f3 pawn. 49.Bf4 Ke6 Diagram

opposite_bishop_94

50.h5!! gxh5 51.Bg3 White's plan now is very simple: f3-f4-f5, Kf4, Bh4, etc. Despite even material Black is helpless against the advance of the White pawns; sacrificing the bishop (as in theoretical position #3) would not work of course, as White has queenside pawns left. 1-0

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