Author: Peter Kappler
Date: 20:23:35 04/09/01
Go up one level in this thread
On April 09, 2001 at 22:27:59, Robert Hyatt wrote: >On April 09, 2001 at 18:28:58, Vincent Diepeveen wrote: > >>On April 09, 2001 at 18:21:52, Robert Hyatt wrote: >> >>>On April 09, 2001 at 17:08:49, Vincent Diepeveen wrote: >>> >>>>On April 09, 2001 at 16:49:21, Normand M. Blais wrote: >>>> >>>>>On April 09, 2001 at 16:21:56, Andrei Fortuna wrote: >>>>> >>>>> >>>>>>positional score > 2 PAWN_VALUE. And that will hurt my quiescence and my >>>>>>futility pruning if I assume that 2*PAWN_VALUE is max positional score. It all >>>>>>boils down to the magnitude of the positional scores versus pawn value, I think >>>>>>I have to choose either to keep big bonuses and turn futility off (or set a >>>>>>bigger margin for futility but in that case it would make futility more >>>>>>inefficient) or keep small bonuses and enjoy the reductions I get from futility >>>>>>and quiescence. >>>>> >>>>>What if you multiply the value of the material by 10 (i.e. pawn = 1000 Knight = >>>>>3000 Bishop = 3000 Rook = 5000 Queen = 10000 ) and keep the positional score as >>>>>it is. >>>>> >>>>>N.M.B. >>>> >>>>then his program will volunteerly >>>>accept a pawn and get mated a few moves later. >>>> >>>>A good test position is DIEP - crafty wmccc2000: >>>> >>>>e2-e4 (2:00:00,2:00:00) book >>>>c7-c5 (2:00:00,1:59:19) >>>>g1-f3 (2:00:00,1:59:19) book >>>>d7-d6 (2:00:00,1:59:06) >>>>d2-d4 (2:00:00,1:59:06) book >>>>c5xd4 (2:00:00,1:58:48) >>>>f3xd4 (1:59:59,1:58:48) book >>>>g8-f6 (1:59:59,1:58:21) >>>>b1-c3 (1:59:59,1:58:21) book >>>>a7-a6 (1:59:59,1:58:02) >>>>c1-g5 (1:59:59,1:58:02) book >>>>e7-e6 (1:59:59,1:57:44) >>>>f2-f4 (1:59:59,1:57:44) book >>>>d8-b6 (1:59:59,1:57:29) >>>>d1-d2 (1:59:59,1:57:29) book >>>>b6xb2 (1:59:59,1:57:16) >>>>a1-b1 (1:59:59,1:57:16) book >>>>b2-a3 (1:59:59,1:56:53) >>>>f4-f5 (1:59:59,1:56:53) book >>>>b8-c6 (1:59:59,1:56:28) >>>>f5xe6 (1:59:59,1:56:28) book >>>>f7xe6 (1:59:59,1:55:59) >>>>d4xc6 (1:59:59,1:55:59) book >>>>b7xc6 (1:59:59,1:55:43) >>>>e4-e5 (1:59:59,1:55:43) book >>>>d6xe5 (1:59:59,1:51:36) >>>>g5xf6 (1:59:59,1:51:36) book >>>>g7xf6 (1:59:59,1:50:43) >>>>c3-e4 (1:59:59,1:50:43) book >>>>f8-e7 (1:59:59,1:46:38) >>>>f1-e2 (1:59:59,1:46:38) book >>>> >>>>Here crafty played O-O?? it castled straight into the mate here by >>>>doing that. O-O is a big blunder. Diep wmccc2000 played h5 there. >>>> >>>>Let's have a look whether current version also does that... >>>> >>>> >>>> >>>> >>>> >>>>best regards, >>>>Vincent >>> >>> >>>If you will post it in a standard machine readable form rather than in >>>that e2-e4 gobbledygook, I will try it. >>> >>>:) >> >>K:\diep>type forbob.fen >>r1b1k2r/4b2p/p1p1pp2/4p3/4N3/q7/P1PQB1PP/1R2K2R b Kkq - >>h5! o-o?? >> >>Note you should also checkout the operating time your operator >>needed. Cool man, but should not operate crafty. Learned a lot >>about computerchess i guess in that tournament. >> >>You need an operator who can operate it at 7 0 too ! > > >O-O was a book move. There are three book choices here. > >Rb3, O-O and Bf3... > >Crafty with no book plays Bf3, but the eval is -1.85 so it thinks >white is nearly lost already in this line... After 30 seconds it >likes c4, but still thinks white is lost. Crafty was Black in this game, and it's black-to-move in the position Vincent posted, but you seem to be analyzing moves for White... -Peter
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