Author: James Robertson
Date: 22:46:29 06/14/99
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On June 14, 1999 at 19:50:22, Paul Richards wrote: >On June 14, 1999 at 16:39:38, Dann Corbit wrote: > >>On June 14, 1999 at 15:38:14, Dann Corbit wrote: >>[snip] >>>Even after this position, the long term advantage is not clear: >>Oops, pasted from the wrong file: >>r1b2rk1/3pqpp1/p1nNp3/3nP2Q/5P2/1N6/1PPB2PP/5RK1 w - - acd 13; acn 100014453; >>acs 717; ce 26; pv Rf3 Nf6 exf6 Qxf6 Bc3 Qg6 Rg3 Qxh5 Rxg7+ Kh8 Rg5+ f6 Rxh5+ >>Kg7 Kf2 Kg6; >> >>Anyway, chess programs don't see sacrifices at all. The only thing they >>*will* see is a very deep combination. >> >>As far as extensions are concerned, I don't think you will find any >>program that solves a position like the one you propose except perhaps >>a mate solver, if there is a mate nearby. > >This position is not that difficult, though there is no forced mate. >I tried three engines on a PII 400. Fritz 5.32 finds the winning line >at 13 ply plus 30 or 40 selective. Takes about 8 minutes. Crafty >chooses the right move at 14 ply, though it only gives it 12 centipawns >initially. Takes about 20 minutes, and I presume it will stay with that >and increase its evaluation. LGGold 2.0 takes the cake again, finding >the winning move in 65 seconds, and displaying the winning line and >a strong eval about 15 seconds later. It seems quite good at searching >tactical positions. It is a program tuned to test suites. James
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