Author: John Wentworth
Date: 13:56:46 02/28/01
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On February 28, 2001 at 16:23:35, Sune Larsson wrote: > > [D]8/5b2/p2k4/1p1p1p1p/1P1K1P1P/2P1PB2/8/8 w - - 0 1 > > > This is one of Averbakh's positions from 1954. > It's a typical winning position in a good versus bad bishop ending. > The black pawns on h5, f5, d5 and a6 are vulnerable and curtail the > movements of the black bishop. To seal black's fate, all white need to do > is lose a move. That is - repeat the initial position with black to move. > This may be accomplished as follows: > > 1.Be2 Be8 [1.-Bg6 2.Bd3 Bh7 3.Bf1 leads to instant zugzwang, be it after > 3.-Bg6 4.Bg2 Bf7 5.Bf3 or after 3.-Bg8 4.Be2 Bf7 5.Bf3] > > 2.Bd3 Bg6 3.Bc2 Bh7 4.Bb3! Bg8 5.Bd1 Bf7 6.Bf3! and so on > > > Test: The above position is won for white so your program should be able > to win it. The evals should differ distinctly between white and black. > > Sune It took Hiarcs 7.32 about 1/2 a second to see it.
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