Author: Uri Blass
Date: 02:12:25 11/05/02
Go up one level in this thread
On November 05, 2002 at 04:28:59, Sune Fischer wrote: >On November 05, 2002 at 00:39:31, Will Singleton wrote: > >>White to play, bm is d7. How long until your engine shows a positive score? >>(amd 1.6ghz). >> >>Amateur ply 15 score 33 secs 212 >>Yace ply 15 score 9 secs 103 >>Crafty ply 16 score 40 secs 69 >>Ruffian ply 12 score 51 secs 5 (just amazing) >> >>[D]5kb1/6pp/p2P1p2/1p6/2r5/P1r2N1P/6P1/2R2RK1 w - - 0 36 >> >>(remember, d7 must show a positive score) >> >>-------------------- >> > >Yeah man, Frenzee: d7 in 0.00 secs with a positive score :) > >2 -614 0 66 1.g3 Rxc1 2.Rxc1 Rxc1+ >2 -416 0 152 1.d7 Rxc1 2.Rxc1 Rxc1+ no the score is negative. It seems that Frenzee does not do pawn promotion in the qsearch. My qsearch detects 1.d7 Rxc1 2.d8Q so I have not this stupid line. Movei's buggy version can show positive score for d7 after search only at depth 13. depth=13 +0.37 d6d7 f8e7 c1d1 e7d8 f1e1 g8f7 f3d4 c3c1 d1c1 c4d4 c1c6 f7c4 g1f2 d4d2 f2g3 d8d7 c6a6 Nodes: 19739458 NPS: 160353 Time: 00:02:03.10 depth=14 +0.27 d6d7 f8e7 c1d1 e7d8 f1e1 g8f7 f3d4 c3c1 d1c1 c4d4 c1c6 d8d7 c6a6 d4a4 e1d1 d7e7 a6b6 a4a3 d1e1 e7d7 b6b5 Nodes: 34345849 NPS: 161993 Time: 00:03:32.02 >2 -386 0 256 1.Nd2 Rxc1 2.Nxc4 Rxf1+ 3.Kxf1 Bxc4+ >2 -60 0 365 1.Ra1 Re4 2.axb4 >2 -49 0 430 1.Rxc3 Rxc3 >3 25 0 600 1.Rxc3 Rxc3 2.d7 Rxa3 >3 144 0 1342 1.d7 Rd3 2.Rxc4 bxc4 >4 145 0 2889 1.d7 Ke7 2.Rxc3 Rxc3 White is a pawn down after d7 Ke7 Rxc3 Rxc3. I think that it is a mistake to give more than a pawn bonus for a pawn in the 7th. Uri
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