Author: Vincent Diepeveen
Date: 17:20:25 05/08/04
Go up one level in this thread
On May 08, 2004 at 14:26:39, Uri Blass wrote: >On May 08, 2004 at 13:38:38, Robert Hyatt wrote: > >>On May 08, 2004 at 13:25:03, Will Singleton wrote: >> >>>On May 08, 2004 at 13:14:04, Kurt Utzinger wrote: >>> >>>>On May 08, 2004 at 11:54:58, Rob Basham wrote: >>>> >>>>>[D]2r2rk1/p1q1bpp1/1p6/n2R4/8/P4N2/1B2QPPP/5RK1 w - - 0 1 >>>>> >>>>>White plays....Bxg7...! >>>>> >>>>>Any programs find this neat move? >>>>> >>>>>this is taken from the 24 brilliant moves file.... >>>>> >>>>>thanks >>>>>Rob >>>> >>>> >>>> My beloved Aristarch 4.41 can't find the winning move >>>> within reasonable time. >>>> Kurt >>>> >>>>Aristarch 4.41 UCI1: (P4 1.8/32 MB hash) >>>> 2- 00:00 -0.42 Bxg7 Kxg7 >>>> 2 00:00 -1.03 Bxg7 Kxg7 >>>> 2+ 00:00 -1.02 h4 Bxa3 >>>> 2+ 00:00 -0.82 h4 Bxa3 >>>> 2 00:00 0.24 h4 Rfd8 >>>> 2+ 00:00 0.25 h3 Rfd8 >>>> 2 00:00 0.32 h3 Rfd8 >>>> 2+ 00:00 0.33 Qd3 Rfd8 >>>> 2 00:00 0.34 Qd3 Rfd8 >>>> 2+ 00:00 0.35 Re1 Qc4 >>>> 2+ 00:00 0.55 Re1 Qc4 >>>> 2 00:00 0.64 Re1 Rfd8 >>>> 2+ 00:00 0.65 Rfd1 Rfd8 >>>> 2 00:00 0.69 Rfd1 Rfd8 >>>> 2+ 00:00 0.70 Rc1 Rfd8 >>>> 2 00:00 0.75 Rc1 Nc4 >>>> 3 00:00 0.82 Rc1 Nc4 a4 >>>> 3+ 00:00 0.83 Rfd1 Rfd8 Ng5 >>>> 3 00:00 0.92 Rfd1 Nc4 Rd7 >>>> 3+ 00:00 0.93 Re1 Rfd8 Rxd8+ Rxd8 Qxe7 >>>> 3 00:00 1.03 Re1 Rfe8 Qe4 >>>> 4- 00:00 0.61 Re1 Rfe8 Qe4 Bxa3 >>>> 4 00:00 0.52 Re1 Rfe8 Qe3 Nc4 >>>> 4+ 00:00 0.53 Rfd1 Nc4 Rd7 Nxa3 >>>> 4+ 00:00 0.73 Rfd1 Nc4 Rd7 Nxa3 >>>> 4 00:00 0.79 Rfd1 Rfd8 Qe4 Nc4 >>>> 4+ 00:00 0.80 Rc1 Nc4 Nd2 Nxb2 >>>> 4 00:00 0.80 Rc1 Bc5 Qe4 Rfe8 >>>> 5 00:00 0.81 Rc1 Nc4 Ne5 Qb7 Rd7 >>>> 6 00:00 0.67 Rc1 Bc5 Qe4 Nb3 Re1 Rfd8 >>>> 6+ 00:00 0.68 Qe4 Nc4 Rc1 Rfd8 Rxd8+ Bxd8 Qe8+ Kh7 Qf8 Bf6 >>>> 6 00:00 0.87 Qe4 Qc2 Qxe7 Nc6 Qg5 Qxb2 >>>> 7 00:00 0.78 Qe4 Qc4 Qf5 Qb3 Rb1 Rcd8 Rb5 >>>> 7+ 00:00 0.79 Rc1 Bc5 Qe4 Nb3 Re1 Rfd8 Qf5 >>>> 7 00:01 0.88 Rc1 Qb7 Rcd1 Rfe8 Rd7 Bd6 Ne5 Rxe5 >>>> 8 00:01 0.78 Rc1 Qxc1+ Bxc1 Rxc1+ Ne1 Bxa3 Qe4 Rc4 Qe3 Bc5 >>>> 9 00:03 0.77 Rc1 Qxc1+ Bxc1 Rxc1+ Ne1 Bxa3 Qe4 Nc4 Rh5 Rd8 Qh7+ Kf8 Qe4 >>>> 9+ 00:04 0.78 Qe4 Qc2 Qxe7 Nc6 Qd6 Qxb2 Rd2 Rfd8 Qxd8+ Nxd8 >>>> 9 00:05 0.93 Qe4 Qc4 Rd4 Qc2 Qxe7 Nc6 Qe4 Qxb2 Rd6 >>>> 9+ 00:08 0.94 Nd2 Rfd8 Qg4 g6 Rxd8+ Qxd8 Ne4 Rc2 Rd1 Rxb2 Rxd8+ Bxd8 >>>> 9 00:09 0.99 Nd2 Bd6 Qg4 Bxh2+ Kh1 f5 Rxf5 Rxf5 Qxf5 Nc4 Nxc4 Qxc4 >>>>10 00:15 1.34 Nd2 Bd6 Ne4 Bxh2+ Kh1 Qc2 Rd2 Qc7 Bxg7 Nc4 Qg4 Nxd2 >>>>11 00:33 1.28 Nd2 Rfd8 Qg4 g6 Qh3 f6 Qe6+ Kf8 Bxf6 Rxd5 >>>>11+ 00:40 1.29 Bxg7 Kxg7 Ne5 Qb7 Qg4+ Kh8 Qh5+ >>>>11+ 00:42 1.49 Bxg7 Kxg7 Ne5 Qb7 Qg4+ Kh8 Qh5+ >>>>11 00:47 1.66 Bxg7 Kxg7 Ne5 Rfd8 >>>>12 01:00 1.27 Bxg7 Kxg7 Ne5 Rfd8 >>>>12+ 01:13 1.28 Nd2 Nc6 Qg4 Bf6 Bxf6 Rfe8 >>>>12 01:30 1.31 Nd2 Nc4 Nxc4 >>>>13 02:59 1.45 Nd2 Rcd8 >>>>14 09:03 1.18 Nd2 Rcd8 >>> >>> >>>Likely because Bxg7 isn't winning? I don't see it. >>> >>>1. Bxg7 Kxg7 2. Ne5 Rfd8 3. Qg4+ Kf8 4. Qf5 f6 5. Nd7+ Rxd7 6. Rxd7 Qe5 7. Qh3 >>>Rc7 * >> >> >>I let Crafty burn a while and it doesn't like Bg7 particularly either. It >>thinks the score after Bg7 is about the same as the score for other moves by >>white. I noticed in the PV after Bxg7 that it saw this as two pieces for a rook >>and pawn, which it will not like much, ever, unless it finds something >>tactically farther down the line: >> >> 11-> 23.98 0.65 1. ... Kxg7 2. Ne5 Rfd8 3. Qg4+ Kf8 >> 4. Nd7+ Rxd7 5. Rxd7 Qc3 6. Rxa7 Bxa3 >> 7. Qd7 Qc4 >> 12 1:15 0.62 1. ... Kxg7 2. Ne5 Rfd8 3. Qg4+ Kf8 >> 4. Nd7+ Rxd7 5. Rxd7 Qc4 6. Qh3 Qh4 >> 7. Qf5 Qf6 8. Qd3 >> 12-> 1:19 0.62 1. ... Kxg7 2. Ne5 Rfd8 3. Qg4+ Kf8 >> 4. Nd7+ Rxd7 5. Rxd7 Qc4 6. Qh3 Qh4 >> 7. Qf5 Qf6 8. Qd3 >> 13 4:17 0.92 1. ... Kxg7 2. Ne5 Rfd8 3. Qh5 Bf6 >> 4. Nd7 Rxd7 5. Qg4+ Kf8 6. Rxd7 Qc4 >> 7. Qf3 Qc6 8. Qf5 >> 13-> 4:37 0.92 1. ... Kxg7 2. Ne5 Rfd8 3. Qh5 Bf6 >> 4. Nd7 Rxd7 5. Qg4+ Kf8 6. Rxd7 Qc4 >> 7. Qf3 Qc6 8. Qf5 > >Deep blue JR already proved that ksparov blundered when he played Bxg7 and the >right move is Rh5 > >see http://chessprogramming.org/cccsearch/ccc.php?find_thread=170951 Yes, Those tactics diep already sees at 5 ply. This position is just depending upon how you high you evaluate a hunted king 00:00 66 2 0 (2) 1 (0,0) -1.720 Rd5xa5 b6xa5 00:00 166 5 0 (2) 1 (0,0) 0.240 Rf1-e1 00:00 1066 32 0 (2) 1 (0,0) 0.504 Rd5-h5 00:00 3700 111 0 (2) 2 (0,1) 0.124 Rd5-h5 Be7-d6 00:00 21300 639 0 (2) 3 (0,3) 0.654 Rd5-h5 Rf8-d8 Rf1-c1 00:00 102368 65516 0 (2) 4 (0,6) 0.184 Rd5-h5 Be7-d6 Qe2-e4 f7-f6 Qe4-h7 Kg8-f7 ++ f1-d1 procnr=0 terug=188 org=[184;185] newwindow=[184;520000] 00:00 102460 67624 0 (2) 4 (0,8) 0.291 Rf1-d1 Be7-c5 Rd5-h5 Rf8-e8 00:00 112140 82984 0 (2) 5 (0,13) 0.413 Rf1-d1 Rf8-d8 Qe2-e5 Qc7xe5 Rd5xd8 Rc8xd 8 Rd1xd8 Be7xd8 Nf3xe5 ++ d5-h5 procnr=0 terug=414 org=[413;414] newwindow=[413;520000] 00:00 116230 95309 0 (2) 5 (0,17) 0.653 Rd5-h5 Rf8-e8 Rf1-c1 Be7-c5 Qe2-d3 00:01 129983 157280 0 (2) 6 (1,24) 0.467 Rd5-h5 Be7-d6 Rf1-c1 Na5-c6 Qe2-d3 f7-f 6 Qd3-h7 Kg8-f7 00:04 170912 726378 0 (2) 7 (3,58) 0.669 Rd5-h5 Rf8-e8 Rf1-c1 Qc7-d7 Rc1xc8 Re8x c8 a3-a4 00:08 190148 1629576 0 (2) 8 (8,111) 0.464 Rd5-h5 Rf8-e8 Rf1-c1 Qc7-d7 Nf3-e5 Rc 8xc1 Bb2xc1 Be7-c5 Qe2-c2 00:21 198977 4327769 0 (2) 9 (43,272) 0.611 Rd5-h5 Rf8-e8 Bb2xg7 Kg8xg7 Nf3-e5 f 7-f5 Qe2-e3 f5-f4 Qe3xf4 02:14 200431 26941937 0 (2) 10 (111,633) 0.747 Rd5-h5 Qc7-c2 Qe2xe7 Qc2xb2 Nf3-e 5 Rc8-c1 g2-g4 Na5-c4 Rh5-h8 Kg8xh8 Qe7xf8 Kh8-h7 Ne5xf7 Qb2xa3 Qf8-h8 Kh7-g6 Qh 8-h5 Kg6-f6 03:26 201092 41624197 0 (2) 11 (205,1060) 0.747 Rd5-h5 Qc7-c2 Qe2xe7 Qc2xb2 Nf3- e5 Rc8-c1 g2-g4 Na5-c4 Rh5-h8 Kg8xh8 Qe7xf8 Kh8-h7 Ne5xf7 Qb2xa3 Qf8-h8
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