Author: Heiner Marxen
Date: 16:06:53 06/20/01
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On June 20, 2001 at 18:41:59, Peter McKenzie wrote: >On June 20, 2001 at 16:06:34, Dann Corbit wrote: > >>On June 20, 2001 at 16:00:53, Peter McKenzie wrote: >>[snip] >>>Oh, btw, LambChop can count the 6ply tree from the root in 20sec on PIII >>>1000mhz. It is faster than crafty because it counts moves at depth 5 not >>>positions at depth 6 and hence effectively it has to search one ply less in the >>>tree. It can do this because I have implemented a fully legal static move >>>generator that does not need makemove to exclude illegal moves. >> >>!!! >>How did you do that? >>Smoke and mirrors? Lookup tables? Plugged into a cray? >>!!! No smoke & no mirrors, Dann! >Its not so hard if you compute attack information already. Plus I keep track of >pins too which helps. >Its not necessarily the best way, but it does have certain advantages and its >fun which is reason enough :-) > >Peter Yes, for Chest it is quite similar, and the timing is also similar: 56.440 sec for perft 6 on K6-3/400. No magic involved, just efficient generation of fully legal moves. Heiner
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