Author: Ed Schröder
Date: 22:39:12 02/26/01
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On February 26, 2001 at 20:11:21, Sune Larsson wrote: > > [D]8/1p1b2k1/p1p1p1p1/2P1P2p/1P3P1P/P2B4/5K2/8 w - - 0 1 > > This position is from Baslavsky-Kondratiev 1947 (slightly modified) > > The white bishop can aim at 5 of the opponents pawns. The white king > threatens to sneak in at the upper North-West corner - a5,b6,c7. > The black bishop looks just like another pawn. The game went like this: > > 1.Ke3 Kf7 2.Kd4 Be8 3.Kc3 Ke7 4.Kb3 Kd8 5.Ka4 Kc7 6.Ka5 Bf7 (Black cannot > allow Kb6 and is reduced to waiting moves with his bishop) > 7.Bc4! Bg8 8.a4 Bf7 9.b5 axb5 10.axb5 Bg8 (if 10.-cxb5 11.Bxb5 Bg8 12.Be8) > 11.b6+ (From now on black has to constantly guard himself against Ba6, > which gives white free hands on the king's flank.) > 11.-Kd8 12.Kb4 Bf7 13.Kc3 Kd7 14.Kd4 Kd8 15.Ke3 Kd7 16.f5! gxf5 17.Kf4 Bg6 > 18.Kg5 Be8 19.Kf6 f4 20.Be2 and wins. > > > Test1: The above position. It's won for white and your program should > show a high +score for white. Rebel +0.75 > Test2: Exchange the good white Bd3 to the more ugly Bc3. This position > is now a draw and your program should show close to 0.00. > The new position below: Rebel +0.50 So the difference is 0.25 Ed > [D]8/1p1b2k1/p1p1p1p1/2P1P2p/1P3P1P/P1B5/5K2/8 w - - 0 1 > > Sune
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