Author: Uri Blass
Date: 12:16:53 12/02/02
Go up one level in this thread
On December 02, 2002 at 14:23:03, Jeremiah Penery wrote: >On December 02, 2002 at 13:28:25, Steffen Basting wrote: > >>Hi! >>How long do your engines need to find Nc6! with a huge white advantage (at least >>+2)? >>[D] kb2r1qr/pp3b2/1p2p3/1Pn1pp1n/R2N2pP/1PN1BPP1/4PQB1/R4K2 w - - 0 1 >> >>Regards, Steffen > >A modified Crafty 18.15/19.1 sort of hybrid, with many additions, AthlonXP >1600MHz. I get only about 275k NPS here. > > 7 1.01 0.36 1. Nxf5 exf5 2. Bxc5 Nxg3+ 3. Qxg3 > bxc5 4. Rxa7+ Bxa7 5. f4 > 7-> 1.68 0.36 1. Nxf5 exf5 2. Bxc5 Nxg3+ 3. Qxg3 > bxc5 4. Rxa7+ Bxa7 5. f4 > 8 2.61 ++ 1. Nxf5!! > 8 3.97 1.44 1. Nxf5 exf5 2. Bxc5 bxc5 3. Rxa7+ > Bxa7 4. Qxc5 Nxg3+ 5. Kf2 Nh1+ 6. Bxh1 > g3+ 7. Kg2 b6 > 8 9.58 2.29 1. Nc6 bxc6 2. fxg4 e4 3. Rxa7+ Bxa7 > 4. Bxc5 bxc5 5. Rxa7+ Kxa7 6. gxh5 So fast and not 1.Nc6 Nxa4 Is it speculative score or agrresive threat or singular extensions that help in this position? I get even after Nc6 at 11,12 plies the following lines so movei probably needs at least depth 14 in the original position to find 1.Nc6 with +2 score. depth=11 +1.32 c5a4 c3a4 b7c6 b5c6 b8d6 a4b6 a8b8 b6c4 d6c7 e3a7 b8c8 c4b6 c7b6 a7b6 c8b8 c6c7 b8c8 a1a8 c8d7 f3g4 e8a8 g2a8 Nodes: 21542228 NPS: 136420 Time: 00:02:37.91 depth=12 +0.00 c5a4 c3a4 b7c6 b5c6 b8c7 a4b6 c7b6 e3b6 g4f3 a1a7 a8b8 a7b7 b8c8 b7c7 c8b8 c7b7 Nodes: 47866431 NPS: 135957 Time: 00:05:52.07 depth=12 +0.00 c5a4 c3a4 b7c6 b5c6 b8c7 a4b6 c7b6 e3b6 g4f3 a1a7 a8b8 a7b7 b8c8 b7c7 c8b8 c7b7 Nodes: 156307601 NPS: 131313 Time: 00:19:50.34 Uri
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