Author: Oliver Roese
Date: 12:46:11 04/24/02
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Hi! On April 24, 2002 at 13:34:21, Sune Larsson wrote: > > [D]8/2b1Bp1k/2p3pP/4P1P1/2P1K3/8/8/8 w - - 0 52 > > Every program I've tried so far seems to think that this position > is won for white. There are evals of more than +3.00. White is a pawn > up but it's a dead draw. > > White's king has three doorways to heaven, a5, c5 and e5. > But black's bishop is closing everyone of them: > > 1) The white king moves to a4 and tries to enter via a5. > Black keeps the bishop on c7 and shuffles the king. > > 2) The white king moves to b4 or d4 and tries to enter via c5. > Black puts the bishop on b6. > I am sorry to oppose but here is the weak point. Lets assume this position would arise: [D]6k1/5p2/1bp2BpP/4P1P1/1KP5/8/8/8 w - - 0 1 White breaks through and gives his pawn e5 for pawn c6. Two passers are enough to win, e.g:: 1.Be7 Kh7 2.Bc5 Bd8 3.Be3 Bc7 4.Kc5 Bxe5 5.Kxc6 and white wins easily. Oliver Roese > 3) All the time black prevents the possibility 1.e6 fxe6 2.Ke5 > by keeping the bishop on c7. > > 4) If white plays his bishop to f4, threatening 1.e6 black plays > 1.-Bb6. Then 2.e6 fxe6 3.Ke5 is met by Bc7+ > > 5) And black has a million of Kg8-h7 moves while white cannot make > any progress at all. 1.Bd6 Bd8 is nothing. All c5 moves from white > are just voluntarily closing one possible path for the king. >
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