Author: Gian-Carlo Pascutto
Date: 07:00:17 01/24/01
Go up one level in this thread
On January 24, 2001 at 09:07:30, leonid wrote: >Please indicate your result. Selective search: Sjeng: prove Max time to search (s): 240 P: 0 D: 100000000 N: 380445 S: 380444 Mem: 10.16M Iters: 6888 MaxDepth: 23 Time : 160.620000 This position is WON. PV: b3d2 e2d2 d7b5 e1e2 b5e2 f1e1 d4c2 Brute force: Sjeng: go Middlegame phase. 2 1898 47 190 Bxg2+ Rxg2 Nxf2 2 1898 74 1642 Bxg2+ Rxg2 Nxf2 3 1955 76 1666 Bxg2+ !! 3 1955 219 27660 Bxg2+ <Rxg2> <Nxf2> <bxa6> 3 1955 291 38762 Bxg2+ <Rxg2> <Nxf2> <bxa6> 4 1916 710 128043 Bxg2+ Rxg2 Nxf2 Rxg5 Nxe2 Nxd7 Rxd5 4 1916 1723 321316 Bxg2+ Rxg2 Nxf2 Rxg5 Nxe2 Nxd7 Rxd5 5 1866 3352 662426 Bxg2+ ?? 5 1867 8918 1717626 Nd2+ ! 5 1966 9328 1771839 Nd2+ !! 5 1966 10234 1873728 Nd2+ <Rxd2> No mate score at ply 5 and I didn't want to wait for ply 6. Finds the correct move faster than selective search though. >If you have somewhere forced mate position from real championship and that is >above 6 moves deep, please put it here. Best will be well populated, with many >pieces. This is actually what I wanted to do today but was not able to find >suitable one. All the time some short mates in 3 and 4. It will be curious to >see how actual chess program perform in real forced mate situation. From one of my own games: Bd1 mates, I played Bf5+ and went on to lose. [D}8/pp3K1k/2p2R2/4r1p1/6B1/2P4p/PP6/8 w - - 0 1 The following are off Dan's ftp site, dunno what file. Sjeng doesn't see the mates in a minute time with brute-force search (it does see most moves) on my machine. I suspect most other programs will have little problems with them. 1k1r4/1bp2pp1/5q2/p4p2/P2P1P2/1Q2r1Pp/8/1R4K1 b - - 0 1 1q1r4/rb1k4/pp4P1/4Q3/2PP4/8/PB4PP/4R1K1 w - - 0 1 1r3rk1/p5pp/2pbp3/3p4/3P4/1N3PnP/P1P2qPK/R1BQR3 b - - 0 1 1r5r/5pk1/3p1qp1/ppnPp1N1/4P1b1/4R3/PP1NBPK1/2RQ4 b - - 0 1 2b2r1k/4q2p/3p2pQ/2pBp3/8/6P1/1PP2P1P/R5K1 w - - 0 1 2b3k1/4rrpp/p2p4/2pP2RQ/1pP1Pp1N/1P3P1P/1q6/6RK w - - 0 1 -- GCP
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