Author: Jeremiah Penery
Date: 22:30:25 02/22/00
Go up one level in this thread
On February 22, 2000 at 22:24:56, Dann Corbit wrote: >On February 22, 2000 at 21:16:39, Paulo Soares wrote: > >>On February 22, 2000 at 19:40:26, Dann Corbit wrote: >> >>>On February 22, 2000 at 19:13:10, Howard Exner wrote: >>>[D]8/6Bp/6p1/2k1p3/4PPP1/1pb4P/8/2K5 b - - >>> >>>I am guessing that NULL move pruning programs will not see the solution because >>>you have to throw away the bishop, and you do not benefit instantly after that. >>> >>>Here is one of those things where it is much easier for a human to see the >>>answer than for a computer. >>> >>>I will be surprised if any program solves it in less than one hour. >> >>Then you can be surprised. >>Junior6(no upgrade, default settings) on a PIII450 with HT=127Mb. >>8/6Bp/6p1/2k1p3/4PPP1/1pb4P/8/2K5 b - - 0 1 >> >>Analysis by Junior 6.0: >> <snip> >>1...b2+ 2.Kc2 exf4 3.Bxc3 f3 4.Be1 Kd4 5.Bh4 b1B+ 6.Kxb1 Kxe4 7.Bf2 Kd3 8.h4 Ke2 >>9.Bd4 h6 10.Bg1 f2 >> ยต (-0.95) depth: 25 00:14:01 231242kN > >Actually, I am surprised (but not that it was Junior). However, you can see >that Junior does not know it is a good move yet. Junior thinks that it is down >one pawn instead of going to win. When Chessbase engines give analysis like this, a negative score is good for black. Since black is to move, Junior thinks it's _up_ a pawn. >So it picked the right move, but it does not >know why yet.
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