Author: Christophe Theron
Date: 23:45:06 08/11/00
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On August 12, 2000 at 00:57:46, Angrim wrote: >On August 11, 2000 at 20:30:53, Christophe Theron wrote: > >>But your position is an easy one. Try this one with your favorite chess programs >>and tell me what happens: >> >> >>[D]8/PPPPPpPk/3rq3/1b1r2b1/2BR1B2/3RQ3/pppppPpK/8 w >> >> >>I confess that mine gets nuts on this one. >> >> >> >> Christophe > >tried this with my new program, which does not extend on converting moves, >only on checks. > >First it checks each move with pn-search for easy mates, and finds that >e3e5, f4g3, d4xd5, h2g1, and h2g3 all lose simply. > >Then the regular search takes 6 seconds to finish a 2 ply deep search, >and favors Qxe6 with pv: > e3xe6 g5xf4 d4xf4 f7xe6<q d3xd5<q d6xd5<q c4xd5<q e6xd5<q h2xg2<q h7xg7<q ><q means the move was in the qsearch. >after another 3 seconds it finished searching 3 ply deep and favored >g8=Q with a huge score. This move remained the favorite for the next >4 ply until I got bored and stopped it after ply 7 and 630 seconds. >pv at ply 7 was g7g8q h7xg8 e7e8q g8g7 f4e5 d5xe5 e3xe5 e6xe5 e8xe5 g5f6 etc > >Angrim This is good. I suspect you limit the qsearch, do you? Christophe
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