Author: Djordje Vidanovic
Date: 04:16:52 01/15/01
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On January 15, 2001 at 04:53:28, Ed Schröder wrote: > >Only 5 seconds to find Rxc6 but 56 seconds to see there is maybe more >than a draw. > >Ed > >---------------------------------------------------- > >Loading... > >Engine version : Rebel Century 2.01 >Hash table size : 40 Mb > >1r2k1r1/3p1p2/2bR1Bp1/p1K1P2p/5P1P/1P6/3R4/8 w - - > >00:00 03.00 -0.29 32.R6d3 Rc8 33.Kd6 >00:01 05.00 -0.33 32.R6d3 Rb5+ 33.Kd6 Rb4 34.Bg5 >00:02 06.00 -0.33 32.R6d3 Rb5+ 33.Kd6 Rb4 34.Bg5 f5 >00:02 07.00 -0.35 32.R6d3 Rb5+ 33.Kd6 Rb4 34.Bg5 Be4 35.Rc3 Rb6+ >00:03 07.02 -0.17 32.Ra2 Rxb3 33.Rxa5 Rc3+ 34.Kd4 Rc1 35.Ra7 >00:03 08.00 -0.17 32.Ra2 Rxb3 33.Rxa5 Rc3+ 34.Kd4 Rc1 35.Ra7 Rb1+ >00:04 09.00 -0.18 32.Ra2 Rxb3 33.Rxa5 Rb8 34.Ra7 Rb5 35.Kc4 Rb1 36.Rd3 >00:05 09.06 -0.11 32.Rxc6 dxc6 33.Kxc6 Kf8 34.Rd5 Rc8+ 35.Kb7 Re8 36.Rxa5 Re6 >37.Ra7 >00:07 10.00 0.00 32.Rxc6 dxc6 33.Kxc6 Kf8 34.Rd5 Rc8+ 35.Kb7 Re8 36.Rxa5 Re6 >37.Ra8 Re8 38.Ra5 Re6 39.Ra8 Re8 >00:13 11.00 0.00 32.Rxc6 dxc6 33.Kxc6 Kf8 34.Rd5+ Rc8+ 35.Kb7 Re8 36.Rxa5 Re6 >37.Ra8 Re8 38.Ra5 Re6 39.Ra8 Re8 >00:25 12.00 0.00 32.Rxc6 dxc6 33.Kxc6 Kf8 34.Rd5 Rc8 35.Kb7 Re8 36.Rxa5 Re6 >37.Ra8+ Re8 38.Ra5 Re6 39.Ra8+ Re8 >00:56 13.00 0.18 32.Rxc6 dxc6 33.Kxc6 Kf8 34.Rd5 Rc8 35.Kb7 Re8 36.Rxa5 Re6 >37.Ra8+ Re8 >04:51 14.00 0.50 32.Rxc6 dxc6 33.Kxc6 Kf8 34.Rd7 Ra8 Ed, each of the programs I quoted to have found the right move came up with positive evals so much so that I took it for granted they "knew" what they were doing, except for Patzer 3.11b that, interestingly, clutches onto 1.Rxc6 right off, and shows a slightly negative eval for White for some time. That is one of Roland's tricks, possibly a heuristic again. That's why Patzer does some things no other program will. He assigns good-sized boni to human knowledge patterns trying to capture them in his code. Sometimes this works, sometimes not. *** Djordje
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