Author: Roy Brunjes
Date: 13:06:53 02/03/03
Go up one level in this thread
On February 03, 2003 at 12:43:22, Mustafa wrote: >[D]4rb2/1p1q1ppk/p1n1p2p/2p1Pn2/3PNR2/2P2K2/P2QBP2/6R1 w - - 0 1 > > >i tried crafty but crafty was unable to find the mate........... No mate found, but it is interesting to see how quickly various engines spot Rxf5 and report a significantly positive (i.e. winning) score. Here is the output of a variety of engines/personalities: A. CM9000 X2 Solution: Time Depth Score Positions Moves 0:39 1/9 -1.43 2433874 1.Kg2 cxd4 2.cxd4 Bb4 3.Qb2 Nfxd4 4.Bh5 Qd5 5.Bxf7 Qxe5 1:56 1/10 -1.38 7219831 1.Kg2 cxd4 2.cxd4 Rd8 3.Bh5 Ncxd4 4.Kh3 Nc6 5.Qb2 Qd3+ 6.Kh2 Nfd4 2:57 1/10 1.32 11050282 1.Rxf5 Nxd4+ 2.cxd4 exf5 3.Qxh6+ Kxh6 4.Rh1+ Kg6 5.Kf4 Qc6 6.Bh5+ Kh7 7.Bxf7+ Qh6+ 8.Rxh6+ Kxh6 9.Bxe8 fxe4 10.d5 3:25 1/11 1.32 13057003 1.Rxf5 Nxd4+ 2.cxd4 exf5 3.Qxh6+ Kxh6 4.Rh1+ Kg6 5.Kf4 Qc6 6.Bh5+ Kh7 7.Bxf7+ Qh6+ 8.Rxh6+ Kxh6 9.Bxe8 fxe4 10.d5 B. The King 3.23S2 Solution: Time Depth Score Positions Moves 0:41 1/9 -1.54 2477011 1.Rxf5 Nxd4+ 2.cxd4 exf5 3.Nd6 Bxd6 4.exd6 Qxd6 5.Kg2 cxd4 6.Kf1 Kg8 1:43 1/10 1.55 6739646 1.Rxf5 Nxd4+ 2.cxd4 exf5 3.Qxh6+ Kxh6 4.Rh1+ Kg6 5.Kf4 Qc6 6.Bh5+ Kh7 7.Bxf7+ Qh6+ 8.Rxh6+ Kxh6 9.Bxe8 fxe4 10.d5 2:16 1/11 1.55 9073853 1.Rxf5 Nxd4+ 2.cxd4 exf5 3.Qxh6+ Kxh6 4.Rh1+ Kg6 5.Kf4 Qc6 6.Bh5+ Kh7 7.Bxf7+ Qh6+ 8.Rxh6+ Kxh6 9.Bxe8 fxe4 10.d5 10:56 1/12 4.15 43811150 1.Rxf5 Nxd4+ 2.cxd4 exf5 3.Qxh6+ Kxh6 4.Rh1+ Kg6 5.Kf4 Qc6 6.d5 Qf6 7.Bh5+ Kh7 8.Nxf6+ gxf6 9.Bxf7+ Bh6+ 10.Rxh6+ Kxh6 11.Bxe8 fxe5+ 12.Kxe5 C. Fritz 8 Solution: New game 4rb2/1p1q1ppk/p1n1p2p/2p1Pn2/3PNR2/2P2K2/P2QBP2/6R1 w - - 0 1 Analysis by Fritz 8: 1.Kg2 cxd4 2.cxd4 Rd8 3.Bh5 b5 4.Rg4 Ncxd4 µ (-0.84) Depth: 5/21 00:00:00 54kN 1.Kg2 cxd4 2.cxd4 Rd8 3.Bh5 b5 4.Rg4 Ncxd4 µ (-0.84) Depth: 6/22 00:00:00 85kN 1.Kg2 cxd4 2.cxd4 Rd8 3.Bh5 b5 4.Rg4 Ncxd4 µ (-0.84) Depth: 7/21 00:00:01 182kN 1.Kg2 cxd4 2.cxd4 Ncxd4 3.Bh5 Rd8 4.Rg4 b5 5.Qa5 Ne2 µ (-0.84) Depth: 8/25 00:00:03 586kN 1.Kg2 Rd8 2.Qd3 cxd4 3.cxd4 Nxe5 4.dxe5 Qxd3 5.Bxd3 Rxd3 6.Rc1 b5 7.Kh2 Be7 µ (-1.00) Depth: 9/27 00:00:10 2386kN 1.Kg2 Rd8 2.Bd3 cxd4 3.cxd4 Qd5 4.Qc3 b5 5.Kh2 Ncxd4 6.Qc7 µ (-1.03) Depth: 10/30 00:00:26 6411kN 1.Kg2 Rd8 2.Bd3 cxd4 3.cxd4 Ncxd4 4.Nd6 Nc6 5.Bxf5+ exf5 6.Qc2 Nxe5 7.Qxf5+ Qxf5 µ (-1.16) Depth: 11/34 00:01:10 17998kN 1.Rxf5! µ (-1.12) Depth: 11/34 00:01:59 31312kN 1.Rxf5! µ (-0.97) Depth: 11/35 00:02:05 32918kN 1.Rxf5 Nxd4+ 2.cxd4 exf5 3.Nd6 Bxd6 4.exd6 Qxd6 5.Bd3 Qd5+ 6.Kg3 cxd4 7.Kh2 Qd6+ µ (-0.84) Depth: 11/35 00:02:14 35018kN 1.Rxf5 Nxd4+ 2.cxd4 exf5 3.Nd6 Bxd6 4.exd6 Qxd6 5.Bd3 Qd5+ 6.Kg3 c4 7.Bc2 µ (-0.84) Depth: 12/34 00:02:41 42056kN 1.Rxf5! ³ (-0.56) Depth: 13/37 00:05:23 84904kN 1.Rxf5! ³ (-0.28) Depth: 13/38 00:06:35 103730kN 1.Rxf5! ² (0.28) Depth: 13/40 00:08:56 141195kN 1.Rxf5 Nxd4+ 2.cxd4 exf5 3.Qxh6+ Kxh6 4.Rh1+ Kg6 5.Kf4 Qc6 ± (1.34) Depth: 13/43 00:12:21 194304kN (Brunjes, MyTown 03.02.2003) D. Junior 7 Solution: New game 4rb2/1p1q1ppk/p1n1p2p/2p1Pn2/3PNR2/2P2K2/P2QBP2/6R1 w - - 0 1 Analysis by Junior 7: 1.dxc5 Nxe5+ 2.Kg2 Qxd2 3.Nxd2 -+ (-2.18) Depth: 3 00:00:00 1.a4 cxd4 -+ (-1.66) Depth: 3 00:00:00 1.Rfg4 cxd4 -+ (-1.46) Depth: 3 00:00:00 1kN 1.Rfg4 cxd4 2.cxd4 Nfxd4+ 3.Kf4 Qd5 -+ (-2.19) Depth: 6 00:00:00 5kN 1.Kg2 cxd4 2.Bg4 Nh4+ 3.Kh3 Qd8 4.Rxf7 -+ (-2.01) Depth: 6 00:00:00 9kN 1.Kg2! -+ (-1.71) Depth: 9 00:00:00 67kN 1.Kg2 cxd4 2.cxd4 Rd8 3.Qd3 Nxe5 4.dxe5 Qxd3 5.Bxd3 ³ (-0.59) Depth: 9 00:00:00 170kN 1.Kg2 cxd4 2.cxd4 Rd8 3.Bh5 Qd5 4.Bxf7 Nfxd4 5.Rg4 ³ (-0.55) Depth: 12 00:00:06 2613kN 1.Kg2 cxd4 2.cxd4 Rd8 3.Qb2 Ncxd4 4.Bh5 Qc7 5.Rg4 Qxe5 ³ (-0.54) Depth: 14 00:00:18 7554kN 1.Kg2 cxd4 2.cxd4 Be7 3.Kf1 Rd8 4.Bh5 Ncxd4 5.Qd3 g6 6.Bd1 ³ (-0.61) Depth: 16 00:01:45 42900kN 1.Rxf5! = (-0.24) Depth: 16 00:06:29 156757kN 1.Rxf5 Nxd4+ 2.cxd4 exf5 3.Qxh6+ Kxh6 4.Rh1+ Kg6 5.Kf4 Qc6 6.Bh5+ Kh7 7.Bxf7+ Qh6+ 8.Rxh6+ Kxh6 9.Bxe8 fxe4 10.Kxe4 ² (0.56) Depth: 16 00:12:47 324249kN 1.Rxf5 Nxd4+ ² (0.56) Depth: 17 00:13:17 334785kN (Brunjes, MyTown 03.02.2003) E. Gambit Tiger 2 Solution: New game 4rb2/1p1q1ppk/p1n1p2p/2p1Pn2/3PNR2/2P2K2/P2QBP2/6R1 w - - 0 1 Analysis by Gambit Tiger 2.0: 1.Kg2 cxd4 2.cxd4 Rd8 3.Bh5 Nxe5 4.dxe5 Qxd2 5.Nxd2 Rxd2 6.Bxf7 ³ (-0.56) Depth: 7 00:00:00 40kN 1.Kg2 cxd4 2.cxd4 Rd8 3.Bh5 Nxe5 4.dxe5 ³ (-0.56) Depth: 7 00:00:00 55kN 1.Kg2 cxd4 2.cxd4 Rd8 3.Bh5 Nxe5 4.dxe5 ³ (-0.56) Depth: 8 00:00:01 121kN 1.Kg2 cxd4 2.cxd4 Rd8 3.Bh5 Nxe5 4.dxe5 Qxd2 5.Nxd2 Rxd2 6.Bxf7 ³ (-0.56) Depth: 9 00:00:02 325kN 1.Kg2 cxd4 2.cxd4 Rd8 3.Bh5 Nxe5 4.dxe5 Qxd2 5.Nxd2 Rxd2 6.Bxf7 ³ (-0.56) Depth: 10 00:00:07 930kN 1.Kg2 cxd4 2.cxd4 Be7 3.Bh5 g6 4.Bf3 Ncxd4 5.Kh1 b6 6.Nf6+ Bxf6 7.exf6 ³ (-0.68) Depth: 11 00:00:21 2821kN 1.Kg2 cxd4 2.cxd4 Be7 3.Bd3 Rd8 4.Nd6 Bxd6 5.exd6 Qxd6 6.Rh4 Qe7 µ (-0.84) Depth: 12 00:00:57 7981kN 1.Kg2 cxd4 2.cxd4 Ncxd4 3.Bh5 Rc8 4.Qd3 Rc7 5.Bg4 Rc2 6.Bxf5+ exf5 7.Nf6+ gxf6 8.Rxd4 Qc6+ 9.Kf1 µ (-0.86) Depth: 13 00:02:28 21285kN 1.Rxf5 = (0.06) Depth: 13 00:03:26 29968kN 1.Rxf5 = (0.06) Depth: 14 00:03:43 32590kN 1.Rxf5 ± (0.96) Depth: 14 00:05:32 49768kN 1.Rxf5 ± (0.96) Depth: 15 00:05:53 53174kN (Brunjes, MyTown 03.02.2003) F. Hiarcs 8 Solution: New game 4rb2/1p1q1ppk/p1n1p2p/2p1Pn2/3PNR2/2P2K2/P2QBP2/6R1 w - - 0 1 Analysis by Hiarcs 8: 1.dxc5 Qxd2 2.Nxd2 Nxe5+ 3.Ke4 µ (-1.27) Depth: 1 00:00:00 1.dxc5 Qxd2 2.Nxd2 Nxe5+ 3.Ke4 µ (-1.27) Depth: 2/12 00:00:00 1.dxc5 Nxe5+ -+ (-2.23) Depth: 3/12 00:00:00 1.dxc5 Nxe5+ -+ (-2.23) Depth: 3/12 00:00:00 1.Kg2 cxd4 2.cxd4 Ncxd4 µ (-1.30) Depth: 3/14 00:00:00 1.Kg2 cxd4 -+ (-1.55) Depth: 4/14 00:00:00 1.Kg2 cxd4 2.cxd4 Bb4 3.Qd3 Qxd4 4.Qxd4 Nfxd4 -+ (-1.99) Depth: 4/16 00:00:00 1.Kg2 cxd4 2.cxd4 Bb4 -+ (-1.99) Depth: 5/16 00:00:00 14kN 1.Kg2 cxd4 2.cxd4 Bb4 3.Qd3 Qxd4 4.Qxd4 Nfxd4 -+ (-1.99) Depth: 6/17 00:00:01 52kN 1.Kg2 cxd4 -+ (-1.74) Depth: 7/22 00:00:02 136kN 1.Kg2 cxd4 2.cxd4 Rd8 3.Bh5 Bb4 4.Qb2 Qe7 -+ (-1.68) Depth: 7/22 00:00:04 214kN 1.Kg2 cxd4 2.cxd4 Rd8 3.Bh5 Bb4 4.Qb2 Qe7 5.Rd1 Ncxd4 -+ (-1.68) Depth: 8/22 00:00:13 685kN 1.Kg2 cxd4 2.cxd4 Ncxd4 3.Bh5 Rc8 4.Rc1 Bb4 5.Qb2 Rxc1 6.Qxc1 -+ (-1.70) Depth: 9/27 00:00:36 1925kN 1.Kg2 cxd4 2.cxd4 Ncxd4 3.Bh5 Qc7 4.Rd1 Qxe5 5.Bxf7 Bb4 6.Qc1 -+ (-1.77) Depth: 10/29 00:02:21 7664kN 1.Kg2 cxd4 -+ (-2.02) Depth: 11/31 00:06:10 20712kN 1.Kg2 cxd4 -+ (-2.02) Depth: 11/32 00:06:33 21840kN 1.Rxf5 Nxd4+ -+ (-1.52) Depth: 11/36 00:11:58 39771kN 1.Rxf5 Nxd4+ 2.cxd4 exf5 3.Qxh6+ Kxh6 4.Rh1+ Kg6 5.Kf4 Qc6 6.d5 fxe4 7.dxc6 Rxe5 8.Kxe5 bxc6 9.Kxe4 f5+ 10.Ke3 +- (2.84) Depth: 11/40 00:57:13 182670kN (Brunjes, MyTown 03.02.2003) G. Chess Tiger 14 Solution: New game 4rb2/1p1q1ppk/p1n1p2p/2p1Pn2/3PNR2/2P2K2/P2QBP2/6R1 w - - 0 1 Analysis by Chess Tiger 14.0: 1.Kg2 cxd4 2.cxd4 Qd5 3.Bh5 Bb4 4.Qc1 µ (-0.86) Depth: 6 00:00:00 44kN 1.Kg2 cxd4 2.cxd4 Nfxd4 3.Bd3 Kh8 4.Nd6 Bxd6 5.exd6 µ (-0.96) Depth: 7 00:00:00 73kN 1.Kg2 cxd4 2.cxd4 Nfxd4 3.Bh5 Nxe5 4.Nf6+ gxf6 5.Rxd4 Qc6+ 6.Kf1 µ (-1.04) Depth: 8 00:00:01 155kN 1.Kg2 cxd4 2.cxd4 Rd8 3.Bh5 Qe8 4.Ng3 Bb4 5.Qc1 Ncxd4 µ (-0.94) Depth: 9 00:00:04 587kN 1.Kg2 cxd4 2.cxd4 Ncxd4 3.Bh5 Rc8 4.Qd3 b5 5.Rg4 Rc2 6.Ng5+ hxg5 7.Rxd4 µ (-1.12) Depth: 10 00:00:09 1247kN 1.Kg2 cxd4 2.cxd4 Rd8 3.Bh5 Qe7 4.Ng3 g6 5.Nxf5 exf5 6.Bf3 Qxe5 7.Bxc6 bxc6 µ (-1.28) Depth: 11 00:00:25 3365kN 1.Rxf5 Nxd4+ 2.cxd4 exf5 3.Nd6 Bxd6 4.exd6 Qxd6 5.Kg2 b5 6.Kf1 Qd5 7.Qf4 cxd4 8.Bh5 µ (-0.93) Depth: 11 00:00:54 7770kN 1.Rxf5 Nxd4+ 2.cxd4 exf5 3.Nd6 Bxd6 4.exd6 Qxd6 5.Qc2 Qd5+ 6.Kg3 cxd4 7.Bd3 Qd6+ 8.Kg2 Qg6+ 9.Kh2 µ (-0.98) Depth: 12 00:01:20 11775kN 1.Rxf5 = (-0.08) Depth: 13 00:05:22 49995kN 1.Rxf5 = (-0.08) Depth: 14 00:05:39 52639kN 1.Rxf5 Nxd4+ 2.cxd4 exf5 3.Qxh6+ Kxh6 4.Rh1+ Kg6 5.Kf4 Qc6 6.Bh5+ Kh7 7.Bxf7+ Qh6+ 8.Rxh6+ Kxh6 ² (0.66) Depth: 14 00:11:40 111882kN (Brunjes, MyTown 03.02.2003) Fastest with a significantly positive score was CM9000 with "The King 3.23S2" personality. Slowest was Hiarcs 8 -- it really is tactically weaker than the others, and I base that on many positions, not just this one. Overall it feels weaker tactically. Still, it kicks butt as Bareev found out (a draw vs #8 on the planet is more than respectable!) Roy
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