Author: Uri Blass
Date: 22:59:00 03/25/03
Go up one level in this thread
On March 25, 2003 at 23:53:22, Uri Blass wrote: >On March 25, 2003 at 22:16:39, bobby palacios wrote: > >>Take from a tournament game of mine: Anaconda 1.0 - Delfi 4.1 (p4 2.47ghz, game >>in 2.5hrs) >> >>[D]1r1r3k/4q3/2RNb2p/pp2P1p1/1b2QB2/5PP1/4P2P/R5K1 w - g6 0 29 >> >>A very nice move by Anaconda, and a difficult move to find for most engines. In >>fact, during the game it took Anaconda over 4 minutes to play the move. > >The problem is that Be3 seems also to lead to a clear advantage for white. > >I do not know if it is good or bad relative to the engines that you tested but >Movei0.08031(p3 850 ghz,64 mbytes hash) needs more than 17 minutes to fail high >on Qg6 > >depth=13 +1.63 e4g6 >Nodes: 186864932 NPS: 180783 >Time: 00:17:13.64 >depth=13 +1.92 e4g6 >Nodes: 241568296 NPS: 179683 >Time: 00:22:24.41 >depth=13 +1.94 e4g6 g5f4 g6h6 h8g8 g1h1 f4g3 a1g1 b4e1 g1e1 g3h2 h1h2 e7h7 h6h7 >g8h7 d6b5 d8e8 >Nodes: 289428528 NPS: 179778 >Time: 00:26:49.92 > >Uri For comparison Yace 0.99.56 needs a long time on the same hardware even with 128 mbytes(the time should be slightly smaller but clearly more than movei). To be more exact It finds it at depth 1 only to change it's mind Note also the order of moves of yace: Qxb4,Rxa5,Bxg5 are bad captures so I wonder if there is a good reason to start the search with them unless you do not have SEE. New position [D]1r1r3k/4q3/2RNb2p/pp2P1p1/1b2QB2/5PP1/4P2P/R5K1 w - g6 0 1 Analysis by Yace 0.99.56: 1.Qxb4 axb4 -+ (-4.90) Depth: 1 00:00:04 1.Rxa5 Bxa5 -+ (-3.08) Depth: 1 00:00:04 1.Bxg5 hxg5 -+ (-1.73) Depth: 1 00:00:04 1.Rac1 gxf4 2.Qxf4 -+ (-1.57) Depth: 1 00:00:04 1.Qg6 gxf4 2.Qxh6+ Kg8 3.Qxf4 ³ (-0.40) Depth: 1 00:00:04 1.Bc1 ± (0.71) Depth: 1 00:00:04 1.Bc1 Bh3 ² (0.63) Depth: 2 00:00:04 1.Bc1 Qa7+ 2.Kg2 Qd7 ² (0.65) Depth: 3 00:00:04 1.Be3 Ra8 ² (0.67) Depth: 3 00:00:04 1.Be3 Qd7 2.Rd1 ± (0.75) Depth: 3 00:00:04 1.Be3 Qh7 2.Qxh7+ Kxh7 3.Nxb5 ± (0.93) Depth: 4 00:00:04 1.Be3 Qg7 2.Rac1 Ba3 3.R1c2 ± (0.98) Depth: 5 00:00:04 51kN 1.Be3 Qh7 2.Qxh7+ Kxh7 3.Ba7 Bd7 4.Rc7 Bxd6 ± (1.04) Depth: 6 00:00:05 205kN 1.Be3 Qg7 2.Bd4 Rd7 3.Rd1 Qe7 4.Qg6 ± (0.95) Depth: 7 00:00:06 482kN 1.Be3 Qg7 2.Rac1 Ba3 3.R1c2 Bb3 4.R2c3 a4 ± (1.12) Depth: 8 00:00:12 2131kN 1.Be3 Qg7 2.Rac1 Qg8 3.Rc7 Rd7 4.Ba7 Bd2 5.R1c2 ± (1.10) Depth: 9 00:00:23 5575kN 1.Be3 Qg7 2.Rac1 Ba3 3.R1c2 Bg8 4.Rc7 Bh7 5.Nf5 Rd1+ 6.Kg2 ± (1.17) Depth: 10 00:01:30 19358kN 1.Be3 Qg7 2.Kh1 Rd7 3.Rac1 Qg8 4.Rc8 Rxc8 5.Rxc8 ± (1.16) Depth: 11 00:06:28 69231kN 1.Be3 Qh7 2.Qxh7+ Kxh7 3.Ba7 Ra8 4.Nxb5 Bd7 5.Rc7 Kg6 6.Nd4 ± (1.35) Depth: 12 00:17:41 272446kN 1.Be3 Qg7 2.h4 Rd7 3.hxg5 hxg5 4.Kg2 Kg8 5.Rh1 Re7 +- (1.58) Depth: 13 00:56:04 1024060kN 1.Qg6 gxf4 2.Qxh6+ Kg8 3.Kh1 fxg3 4.Rg1 Be1 5.Rxe1 gxh2 6.Kxh2 Rxd6 7.exd6 Qh7 8.Qxh7+ Kxh7 +- (1.59) Depth: 13 01:11:21 1329082kN 1.Qg6 gxf4 2.Qxh6+ Kg8 3.Kh1 fxg3 4.Rg1 Be1 5.Rxe1 gxh2 6.Kxh2 Rxd6 7.exd6 Qh7 8.Qxh7+ Kf8 +- (1.75) Depth: 13 01:20:07 1494244kN (blass, tel-aviv 26.03.2003) Uri
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