Author: Vincent Lejeune
Date: 18:49:42 07/10/04
Go up one level in this thread
On July 10, 2004 at 21:32:37, Tom Likens wrote: >On July 10, 2004 at 18:46:36, Vincent Lejeune wrote: > >>On July 10, 2004 at 18:24:26, Jon Dart wrote: >> >>>I have recently modified Arasan so that it can display 2nd and 3rd-best >>>moves for each test position. Using this I have gone through my >>>previously released test suite and some other tests I have collected >>>recently (mostly from Arasan games), and weeded out positions that >>>don't have unique good moves. I also removed some that were too easy. >>>The latest version is at http://www.arasanchess.org/arasan4.epd. >>>Any comments or corrections welcome. Last I ran this, Arasan was getting >>>about 95 out of 115 correct at 60 seconds/move. >>> >>>The last test is interesting and wasn't solved at the 60 second mark: >>> >>>[D] 2kr3r/Rbpnq3/1p1pp3/2P3p1/3P4/2P1P1p1/Q2N1PP1/4KB2 w - - >>> >>>best move Rxb7. Phalanx played this in a test game (Arasan is getting a + score >>>over Phalanx overall in my tests now, but Phalanx is particularly good at >>>tactical shots and is still a tough opponent). >>> >>>--Jon >> >>In fact, there's a mate in 10 :) >> >>Time Depth Score Positions Moves >>0:00 1/4 -5.50 8065 1.fxg3 dxc5 2.Bb5 Rh1+ 3.Ke2 >>0:00 1/4 -5.19 17454 1.Bb5 gxf2+ 2.Kxf2 Rdf8+ 3.Nf3 >> Bxf3 4.gxf3 bxc5 >>0:00 1/4 -3.30 30808 1.Ba6 gxf2+ 2.Kxf2 Rdf8+ 3.Nf3 >> Nxc5 4.dxc5 >>0:00 1/5 -1.72 57116 1.Ba6 gxf2+ 2.Ke2 f1=Q+ 3.Nxf1 >> dxc5 4.Bxb7+ Kb8 >>0:00 1/6 -0.88 188968 1.Ba6 gxf2+ 2.Ke2 f1=Q+ 3.Nxf1 >> Nf6 4.cxb6 cxb6 5.Rxb7 >>0:06 1/7 0.29 1669936 1.Ba6 gxf2+ 2.Ke2 f1=Q+ 3.Nxf1 >> Nxc5 4.dxc5 Kd7 5.Bxb7 b5 6.cxd6 >> Qxd6 >>0:06 1/7 Mate10 1786002 1.Rxb7 gxf2+ 2.Kd1 Nb8 3.Qa8 Kd7 >> 4.Bb5+ Nc6 5.Bxc6+ Kxc6 6.Rxb6+ >> Kd7 7.Qa4+ Kc8 8.Qa6+ Kd7 9.Qb5+ >> Kc8 10.Rb8# >>0:06 1/8 Mate10 1844576 1.Rxb7 gxf2+ 2.Kd1 Nb8 3.Qa8 Kd7 >> 4.Bb5+ Nc6 5.Bxc6+ Kxc6 6.Rxb6+ >> Kd7 7.Qa4+ Kc8 8.Qa6+ Kd7 9.Qb5+ >> Kc8 10.Rb8# >>0:07 1/9 Mate10 2215143 1.Rxb7 gxf2+ 2.Kd1 Nb8 3.Qa8 Kd7 >> 4.Bb5+ Nc6 5.Bxc6+ Kxc6 6.Rxb6+ >> Kd7 7.Qa4+ Kc8 8.Qa6+ Kd7 9.Qb5+ >> Kc8 10.Rb8# >>0:09 1/10 Mate10 3084256 1.Rxb7 gxf2+ 2.Kd1 Nb8 3.Qa8 Kd7 >> 4.Bb5+ Nc6 5.Bxc6+ Kxc6 6.Rxb6+ >> Kd7 7.Qa4+ Kc8 8.Qa6+ Kd7 9.Qb5+ >> Kc8 10.Rb8# >>0:14 1/11 Mate10 5070105 1.Rxb7 gxf2+ 2.Kd1 Nb8 3.Qa8 Kd7 >> 4.Bb5+ Nc6 5.Bxc6+ Kxc6 6.Rxb6+ >> Kd7 7.Qa4+ Kc8 8.Qa6+ Kd7 9.Qb5+ >> Kc8 10.Rb8# > >Vincent, > >This is impressively fast. What program did you use to discover the mate? > >--tom Chessmaster AMD barton@3000+
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