Author: Uri Blass
Date: 06:46:18 09/14/01
Go up one level in this thread
On September 13, 2001 at 03:02:32, Tim Foden wrote: >On September 12, 2001 at 10:45:44, leonid wrote: > >>On September 12, 2001 at 10:34:41, leonid wrote: >> >>>[D]Q6r/1prpbqk1/1Q4q1/1Q1nn1p1/1Q1NN1p1/1R4q1/1BBQQRp1/K6b w - - >>> >>>Please indicate your result. >>> > >Green Light Chess 2.15-pr7, Duron 920MHz, 96MB hash, claims that: > >Rxf7+ is Mate in 11 after 50 seconds, and >Qxg6+ is Mate in 10 after 18 minutes 49 seconds. > >Cheers, Tim. > >Analysis: > > Game stage: Opening > Current eval: 25.36 > Ply Time Score Nodes Principal Variation > 3 0.19 -- 39429 Rxf7+ (a=29.39 b=30.19 e=29.39) > 3 0.20 +26.037 44707 Rxf7+ Qxf7 Nf5+ Qxf5 Rxg3 Rxa8+ > 3 0.33 +26.037 89216 Rxf7+ Qxf7 Nf5+ Qxf5 Rxg3 Rxa8+ > 4 0.38 +26.003 115624 Rxf7+ Qxf7 Qxh8+ Kxh8 Qh6+ Kg8 Rxg3 Bxb4 Qhxg5+ > 4 0.96 +26.003 403965 Rxf7+ Qxf7 Qxh8+ Kxh8 Qh6+ Kg8 Rxg3 Bxb4 Qhxg5+ > 5 0.97 ++ 406297 Rxf7+ (a=25.60 b=26.40 e=26.40) > 5 1.24 +28.916 557656 Rxf7+ Qxf7 Nf5+ Qxf5 Qxh8+ Kxh8 Qh6+ Kg8 Qdxd5+ Qf7 > Rxg3 Bxb4 Bxe5 > 5 3.84 +28.916 2018676 Rxf7+ Qxf7 Nf5+ Qxf5 Qxh8+ Kxh8 Qh6+ Kg8 Qdxd5+ Qf7 > Rxg3 Bxb4 Bxe5 > 6 3.92 ++ 2060910 Rxf7+ (a=28.52 b=29.32 e=29.32) > 6 4.62 +31.801 2472829 Rxf7+ Qxf7 Nf5+ Qxf5 Qxh8+ Kxh8 Qh6+ Qh7 Qxh7+ Kxh7 > Nxg3+ Ng6 Qbd4 > 6 11.68 +31.801 6635386 Rxf7+ Qxf7 Nf5+ Qxf5 Qxh8+ Kxh8 Qh6+ Qh7 Qxh7+ Kxh7 > Nxg3+ Ng6 Qbd4 > 7 11.74 ++ 6659250 Rxf7+ (a=31.40 b=32.20 e=32.20) > 7 14.85 +44.893 8705373 Rxf7+ Qxf7 Qxh8+ Kxh8 Qh6+ Qh7 Qxh7+ Kxh7 Nxg3+ > Rxc2 Qxc2+ Kh6 Ndf5+ Kg6 Nxe7+ Kh6 Ng8+ Kg7 Bxe5+ > Kxg8 Qxd5# > 7 37.13 +44.893 22657k Rxf7+ Qxf7 Qxh8+ Kxh8 Qh6+ Qh7 Qxh7+ Kxh7 Nxg3+ > Rxc2 Qxc2+ Kh6 Ndf5+ Kg6 Nxe7+ Kh6 Ng8+ Kg7 Bxe5+ > Kxg8 Qxd5# > 8 37.17 ++ 22679k Rxf7+ (a=44.49 b=45.29 e=45.29) > 8 50.28 +Mate11 33092k Rxf7+ Qxf7 Qxh8+ Kxh8 Qh6+ Qh7 Qxh7+ Kxh7 Nxg3+ > Rxc2 Qxc2+ Kh6 Ndf5+ Kg6 Nxe7+ Kh6 Ngf5+ Kh7 Rh3+ > gxh3 Qh5# > 8 3:22 +Mate11 147173k Rxf7+ Qxf7 Qxh8+ Kxh8 Qh6+ Qh7 Qxh7+ Kxh7 Nxg3+ > Rxc2 Qxc2+ Kh6 Ndf5+ Kg6 Nxe7+ Kh6 Ngf5+ Kh7 Rh3+ > gxh3 Qh5# > 9 6:56 +Mate11 321805k Rxf7+ Qxf7 Qxh8+ Kxh8 Qh6+ Qh7 Qxh7+ Kxh7 Nxg3+ > Rxc2 Qxc2+ Kh6 Ndf5+ Kg6 Nxe7+ Kh6 Qd6+ Nf6 Qxf6+ > Ng6 Qcxg6# > 9 18:49 +Mate10 980540k Qxg6+ Qxg6 Qxe7+ Nxe7 Ne6+ Qxe6 Qxg5+ Ng6 Qxg6+ > Kxg6 Nxg3+ Rxc2 Qxc2+ Nd3 Qcxd3+ Qf5 Qdxf5+ Kh6 > Qxh8# > 9 33:45 +Mate10 1783m Qxg6+ Qxg6 Qxe7+ Nxe7 Ne6+ Qxe6 Qxg5+ Ng6 Qxg6+ > Kxg6 Nxg3+ Rxc2 Qxc2+ Nd3 Qcxd3+ Qf5 Qdxf5+ Kh6 > Qxh8# > 10 1:18:15 +Mate10 4331m Qxg6+ Qxg6 Qxe7+ Nxe7 Ne6+ Qxe6 Qxg5+ Ng6 Qxg6+ > Kxg6 Nxg3+ Rxc2 Qxc2+ Nd3 Qcxd3+ Qf5 Qdxf5+ Kh6 > Qxh8# > 10 3:46:12 +Mate10 12686m Qxg6+ Qxg6 Qxe7+ Nxe7 Ne6+ Qxe6 Qxg5+ Ng6 Qxg6+ > Kxg6 Nxg3+ Rxc2 Qxc2+ Nd3 Qcxd3+ Qf5 Qdxf5+ Kh6 > Qxh8# > 11 5:57:52 +Mate10 20241m Qxg6+ Qxg6 Qxe7+ Nxe7 Ne6+ Qxe6 Qxg5+ Ng6 Qxg6+ > Kxg6 Nxg3+ Rxc2 Qxc2+ Kg7 Bxe5+ Kh6 Qxh8+ Kg5 > Bf6# > 11 8:14:28 2/89 Rxf7+ >exit Chessmaster6000(ss=10) on p850 needed 1 second to see Rxf7+ mate in 12 11 seconds are enough to see Rxf7+ as mate in 11 and 89 seconds are enough to see Qxg6+ as mate in 10 Here are shredder5.32's results on p200 It searched full 19 plies forward but could not solve it(it found the right move but not mate in 10). There is probably a bug in shredder5.32 because I do not believe that it is a null move problem and extensions should push it to solve it faster than 19 plies. The depthes of shredder5.32 also do not make sense You can see that the first main line at depth 1/2 has 10 plies. I think that chessbase needs to define better the depth of the search and the second number(if there is a second number) should be the longer line that shredder looks at New position Q6r/1prpbqk1/1Q4q1/1Q1nn1p1/1Q1NN1p1/1R4q1/1BBQQRp1/K6b w - - 0 1 Analysis by Shredder 5.32: 1.Rxg3 Rxa8+ 2.Kb1 Nxb6 3.Qxe5+ Kh6 4.Rxf7 Bxb4 5.Qexg5+ Qxg5 +- (29.58) Depth: 1/2 00:00:00 1.Rxg3 Rxa8+ 2.Qa3 Nxb6 3.Qxe5+ Bf6 4.Qxf6+ Qgxf6 5.Qxg5+ Qxg5 +- (29.08) Depth: 1/2 00:00:00 1.Rxg3 Rxa8+ 2.Kb1 Bxb4 3.Rxf7+ Nxf7 4.Qxg6+ Kxg6 5.Nxg5+ Kg7 +- (26.59) Depth: 1/2 00:00:01 1.Rxf7+ Qxf7 +- (28.67) Depth: 1/2 00:00:01 1.Rxf7+ Nxf7 +- (33.96) Depth: 1/2 00:00:01 1.Rxf7+ Qxf7 2.Nxg5 Rxa8+ 3.Kb1 +- (34.61) Depth: 1/2 00:00:01 1.Rxf7+ Qxf7 2.Rxg3 Rxa8+ 3.Qa3 g1Q+ 4.Rxg1 Bxa3 5.Qxg5+ Ng6 6.Qgxg6+ Qxg6 7.Qxg6+ Kxg6 8.Qxg4+ Kf7 9.Qxd5+ Ke7 10.Qgxd7+ Rxd7 +- (34.36) Depth: 2/4 00:00:02 1.Rxf7+ Qxf7 2.Rxg3 Rxa8+ 3.Qa3 g1Q+ 4.Rxg1 Bxa3 5.Qxg5+ Ng6 6.Qgxg6+ Qxg6 7.Qxg6+ Kxg6 8.Qxg4+ Kf7 9.Qxd5+ Ke7 10.Qgxd7+ Rxd7 +- (33.86) Depth: 2/4 00:00:02 1.Rxf7+ Qxf7 2.Qxh8+ Kxh8 3.Rxg3 Bxb4 4.Qxg5 Nxb6 5.Qbxe5+ Kh7 6.Qxc7 +- (31.57) Depth: 2/4 00:00:03 1.Rxf7+ Kxf7 2.Qxh8 Bxb4 3.Nxg3 g1Q+ 4.Qf1+ Qxf1+ 5.Qxf1+ Bf3 6.Rxb4 Nxb6 7.Bxg6+ Kxg6 +- (31.82) Depth: 3/6 00:00:06 1.Rxf7+ Kh6 2.Rxg3 Rxa8+ 3.Kb1 g1Q+ 4.Rxg1 Bxb4 5.Qxd5 Bxe4 6.Qdxb4 Bxd5 7.Bxg6 Nxg6 8.Qxc7 Bxf7 9.Rxg4 +- (32.32) Depth: 3/6 00:00:06 1.Rxf7+ Qxf7 2.Nf5+ Qxf5 3.Qxh8+ Kxh8 4.Qh6+ Qh7 5.Qxh7+ Kxh7 6.Nxg3+ Kh6 +- (37.01) Depth: 3/6 00:00:08 1.Rxf7+ Qxf7 2.Nf5+ Qxf5 3.Qxh8+ Kxh8 4.Qh6+ Qh7 5.Qxh7+ Kxh7 6.Nxg3+ Kh6 +- (37.01) Depth: 4/8 00:00:20 1.Rxf7+ Qxf7 2.Nf5+ Qxf5 3.Qxh8+ Kxh8 4.Qh6+ Qh7 5.Qxh7+ Kxh7 6.Nxg3+ Kh6 +- (37.01) Depth: 5/10 00:01:03 1.Rxf7+ Qxf7 2.Nf5+ Qxf5 3.Qxh8+ Kxh8 4.Qh6+ Kg8 5.Qbxd5+ Nf7 6.Rxg3 Qxd5 7.Qxe7 +- (37.26) Depth: 6/12 00:01:28 2273kN 1.Rxf7+ Qxf7 2.Qxh8+ Kxh8 3.Qh6+ Kg8 4.Nf6+ Qxf6 5.Qxd5+ Qe6 6.Qdxe6+ dxe6 7.Rxg3 Bxb4 8.Qdxg5+ +- (37.76) Depth: 6/12 00:01:35 2472kN 1.Rxf7+ Qxf7 2.Qxh8+ Kxh8 3.Qh6+ Qh7 4.Qxh7+ Kxh7 5.Nxg3+ Rxc2 6.Qxc2+ Ng6 7.Qxd7 Nxb4 +- (42.89) Depth: 6/12 00:01:45 2748kN 1.Rxf7+ Qxf7 2.Qxh8+ Kxh8 3.Qh6+ Qh7 4.Qxh7+ Kxh7 5.Nxg3+ Kh6 6.Ndf5+ Kh7 7.Nxe7+ Kh8 +- (43.14) Depth: 7/14 00:02:02 3242kN 1.Rxf7+ Qxf7 2.Qxh8+ Kxh8 3.Qh6+ Qh7 4.Qxh7+ Kxh7 5.Nxg3+ Kg7 6.Qxe7+ +- (43.64) Depth: 7/14 00:02:02 3249kN 1.Rxf7+ Qxf7 2.Qxh8+ Kxh8 3.Qh6+ Kg8 4.Nf6+ Nxf6 5.Qdxg5+ Ng6 6.Qgxg6+ Qxg6 7.Qxg6+ Kh8 8.Rxg3 Bxb4 9.Qxf6+ Kg8 10.Qxg4# +- (43.99) Depth: 7/14 00:02:11 3540kN 1.Rxf7+ Qxf7 2.Qxh8+ Kxh8 3.Qh6+ Kg8 4.Nf6+ Nxf6 5.Qdxg5+ Ng6 6.Qgxg6+ Qg7 7.Qhxg7# +- (44.24) Depth: 8/16 00:02:49 4586kN 1.Rxf7+ Qxf7 2.Qxh8+ Kxh8 3.Qh6+ Kg8 4.Nf6+ Nxf6 5.Qdxg5+ Qg6 6.Qhxg6+ Kh8 7.Q5xf6+ Bxf6 8.Qxf6+ Kg8 9.Rxg3 +- (44.74) Depth: 8/16 00:02:51 4638kN 1.Rxf7+ Nxf7 2.Nf5+ Kh7 3.Qxg6+ Kxg6 4.Nxe7+ Kh5 5.Nxg3+ Kh4 6.Qbxg4# +- (#13) Depth: 8/16 00:02:53 4712kN 1.Rxf7+ Nxf7 2.Nf5+ Kh7 3.Qxg6+ Kxg6 4.Nxe7+ Kh5 5.Nxg3+ Kh4 6.Qbxg4# +- (#13) Depth: 9/18 00:02:54 4719kN 1.Rxf7+ Nxf7 2.Nf5+ Kh7 3.Qxg6+ Kxg6 4.Nxe7+ Kh5 5.Nxg3+ Kh4 6.Qbxg4# +- (#13) Depth: 10/20 00:02:55 4736kN 1.Rxf7+ Nxf7 2.Nf5+ Kh7 3.Qxg6+ Kxg6 4.Nxe7+ Kh5 5.Nxg3+ Kh4 6.Qbxg4# +- (#13) Depth: 11/22 00:02:57 4803kN 1.Rxf7+ Nxf7 2.Nf5+ Kh7 3.Qxg6+ Kxg6 4.Nxe7+ Kh5 5.Nxg3+ Kh4 6.Qbxg4# +- (#13) Depth: 12/24 00:04:47 7618kN 1.Rxf7+ Nxf7 2.Nf5+ Kh7 3.Qxg6+ Kxg6 4.Nxe7+ Kh5 5.Nxg3+ Kh4 6.Qbxg4# +- (#13) Depth: 13/26 00:04:59 8175kN 1.Rxf7+ Nxf7 2.Nf5+ Kh7 3.Qxg6+ Kxg6 4.Nxe7+ Kh6 5.Qxg5+ Nxg5 6.Bg7+ Kxg7 7.Qd4+ +- (#13) Depth: 14/28 00:05:36 10095kN 1.Rxf7+ Nxf7 2.Nf5+ Kh7 3.Qxg6+ Kxg6 4.Nxe7+ Kh6 5.Qxg5+ Nxg5 6.Bg7+ Kxg7 7.Qd4+ +- (#13) Depth: 15/30 00:07:25 16102kN 1.Rxf7+ Qxf7 2.Qxh8+ Kxh8 3.Qh6+ Qh7 4.Qxh7+ Kxh7 5.Nxg3+ Ng6 6.Qbxe7+ Ndxe7 7.Qxe7+ Kg8 +- (#13) Depth: 16/32 00:10:47 26505kN 1.Rxf7+ Qxf7 2.Qxh8+ Kxh8 3.Qh6+ Qh7 4.Qxh7+ Kxh7 5.Nxg3+ Ng6 6.Qbxe7+ Ndxe7 7.Qxe7+ Kg8 +- (#13) Depth: 17/34 00:12:52 33788kN 1.Rxf7+ Qxf7 2.Qxh8+ Kxh8 3.Qh6+ Qh7 4.Qxh7+ Kxh7 5.Nxg3+ Ng6 6.Qbxe7+ Ndxe7 7.Qxe7+ Kg8 +- (#13) Depth: 18/36 00:26:21 76295kN 1.Rxf7+ Qxf7 2.Qxh8+ Kxh8 3.Qh6+ Qh7 4.Qxh7+ Kxh7 5.Nxg3+ Ng6 6.Qbxe7+ Ndxe7 7.Qxe7+ Kg8 +- (#13) Depth: 19/38 00:44:48 135219kN 1.Qxg6+ Qxg6 2.Qxe7+ Nxe7 3.Ne6+ Qxe6 4.Rf7+ Kg6 5.Qxh8 g1Q+ 6.Qf1 Qe1+ 7.Qdxe1 Nxf7 +- (#12) Depth: 19/38 07:46:51 1521873kN 1.Qxg6+ Qxg6 2.Qxe7+ Nxe7 3.Ne6+ Qxe6 4.Rf7+ Kg6 5.Qxh8 g1Q+ 6.Qf1 Qe1+ 7.Qdxe1 Qa7+ 8.Qea5 Qxa5+ 9.Qxa5 Qxf7 10.Qxf7+ Nxf7 +- (#12) Depth: 19/38 10:23:02 2021596kN Uri
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