Author: Matthew White
Date: 19:30:00 07/25/03
Go up one level in this thread
On July 25, 2003 at 10:47:51, Tord Romstad wrote: >On July 24, 2003 at 16:42:31, Matthew White wrote: > >>I'm not sure if this one has been posted before, but even if it has, it's worth >>repeating. Position is from Timman - Kasparov (Linares 1992) >> >>[D]r1b2rk1/2pq2bp/2Np1np1/3Pp1P1/1P2pn2/2N1BP2/1KBQ3P/3R3R b - - >> >>Black to move. >> >>N6h5 Bxe4 cements White's light-squared control. >>Instead, Kasparov uncorked 21...N6xd5!! 22. Nxd5 Nd3+ 23. Bxd3 exd2 24. Nce7+ >>Kh8 25. Nxc8 e4+ > >Seems to be an easy position for chess programs. Gothmog finds the right move >at the third iteration after 0.05 seconds: > > 1 0.56 0.00 42 e4f3 e3f4 e5f4 g5f6 g7f6 > 2 0.56 0.00 541 e4f3 e3f4 e5f4 g5f6 g7f6 > 3 0.38 0.03 1799 e4f3 g5f6 g7f6 h1f1 > 3 0.45 0.05 2551 f6d5 c3d5 e4f3 c6e7 g8h8 e3f4 e5f4 b2c1 > 4 0.45 0.09 7692 f6d5 c3d5 e4f3 c6e7 g8h8 e3f4 e5f4 b2c1 > 5 > 0.95 0.23 30193 f6d5 c3d5 e4f3 c6e7 g8h8 e3f4 > 5 0.95 0.27 35365 f6d5 c3d5 e4f3 c6e7 g8h8 e3f4 > 6 0.95 0.68 102615 f6d5 c3d5 e4f3 c6e7 g8h8 e3f4 e5f4 b2c1 > a8a1 c2b1 > 7 0.95 2.38 381571 f6d5 c3d5 e4f3 c6e7 g8h8 e3f4 e5f4 b2c1 > a8a1 c2b1 > 8 0.86 8.30 1343930 f6d5 c3d5 e4f3 c6a5 c8a6 e3f4 e5f4 d5f6 > g7f6 g5f6 d7e6 c2b3 > 9 0.91 28.62 4486167 f6d5 c3d5 e4f3 c6a5 f4e6 b2c1 c8a6 a5c6 > a6e2 c6e7 g8h8 >10 0.91 83.71 13873324 f6d5 c3d5 e4f3 c6a5 c8a6 e3f4 e5f4 d5f6 > g7f6 g5f6 d7d8 b2b1 d8f6 d2d5 g8h8 d5f3 > >Tord Keep running it for a while. Some of them play the sac early on, then change their minds. It's actually very difficult to find for the commercial engines that I tested it on... Matt
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