Author: Martin Giepmans
Date: 14:07:06 12/08/03
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On December 08, 2003 at 15:23:10, Dieter Buerssner wrote: >On December 08, 2003 at 13:45:46, Martin Giepmans wrote: > >>12 0:00:02 + 5.64 H7-H8P A3-A2 H8-G6 F7xG6 F6-F7 G6-G5 C2-D3 A1-B2 F7-F8L >> B2xB3 F8-G7 B3-A3 D3-C2 B4-B3 C2-C1 A3-A4 C1-B2 A4-B4 >> G7-H8 B4-A4 H8-F6 A4-B4 F6-D4 A2-A1D B2xA1 B4-B5 D4xA7 >> B5xA6 > >Very impressive. Depth 12 and and a PV of 28 plies ... > >But, how do you get such a high score? Is this the score of the end position of >the PV (or is the PV not so reliable - perhaps from hash). When I follow your >PV, even after 16 plies, I don't get a score that high fast. In the end >position, I get a static eval of 0.63 (and a draw score after search). > >Regards, >Dieter Thanks! I will have to look at my static eval again, because there is apparently something wrong. Spider uses extreme high and low static scores for positions in which one color has only pawns. That's normal. But in this case the scores are wrong. The end position of the last PV at depth 12 is indeed not more than a draw and in the end position of the PV at depth 16 black wins! The PV's show that the program doesn't understand what is going on. White should keep the black king away from the white pawns on the king side. That's the only way to win. The good news is that the program finds the right moves and wins when I play the position against it and give it 30 sec/move ;) Cheers, Martin
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