Author: Uri Blass
Date: 11:26:35 02/21/03
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On February 21, 2003 at 14:08:19, bobby palacios wrote: >Taken from game 14 of my 24 game match at game in 2.5hrs between Fritz8 and >Shredder 7. > >[D] 2r3k1/pp1b1pp1/3q1n1p/2pPR3/5P2/1PNQ4/P1B3PP/7K b - - 0 23 > >In this seemingly equal position, Fritz 8 played the nice pawn sac ..c4! How >many programs will play ..c4 and give black a better position. In the game >Fritz 8 gave itself a 3/4 pawn advantage. It is not a real sac because black gets the pawn back. Latest movei finds c4 at depth 11(evaluation 0.07 when g6 is only +0.06 pawn At depth 12 the evaluation increase to +0.19(hardware p850 64 Mbytes) and in the next iteration 0.32 depth=11 +0.07 c5c4 b3c4 d6c7 c3e2 c7c4 d3c4 c8c4 c2b3 c4c8 d5d6 g8f8 h1g1 Nodes: 17497288 NPS: 161295 Time: 00:01:48.48 depth=12 +0.19 c5c4 b3c4 d6c7 c3e2 c7c4 d3c4 c8c4 c2b3 c4c8 d5d6 g7g6 e5a5 a7a6 Nodes: 26147547 NPS: 161984 Time: 00:02:41.4 depth=13 +0.32 c5c4 b3c4 d6c5 c3e2 g8f8 d5d6 c5b4 h2h3 b4c4 d3c4 c8c4 c2f5 d7c6 Nodes: 52510298 NPS: 163900 Time: 00:05:20.38 for comparison public Movei find c4 slightly faster with higher score but the score goes down at depth 12 and it changes it's mind at depth 12 to g6 Uri
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