Author: Steve Maughan
Date: 09:46:08 06/15/99
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>I stand corrected. I inadvertently left Crafty 16.6 chewing on the >position overnight. This morning at 17 ply it gives the following pv: >c4 Nf6 exf6 Qxf6 Bc3 Qh4 Rf3 f5 Na5 Nxa5 Qe5 Qg4 Bxa5 Qh4 c5 Qf6 >Qxf6 Rxf6, and gives this an eval of +2.06, or 206 centipawns to white. >I don't know if other programs will change their eval later, though >the Bxh7+ line had a similar eval as I recall. Humans would >unhesitatingly choose to destroy the opponent's king position I think, >since the long term prospects are usually better. If I have time I'll >let Fritz or LGGold do a longer search on the position, or perhaps >someone else can crunch on it. CM 6000 on its normal settings finds Bxh7+ in about 45 mins but also changes to c4 after about 1 hr. The reason is that after the N at d5 has moves, Bxh7+ is stronger, or alternatively after Nf6 it is an easy win for white. Interestingly, CM 6000 with the alternative setting (Sel = 10 etc) finds and stays with Bxh7 after 2 min 7 secs from the root position. Steve Maughan
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