Author: Robert Hyatt
Date: 18:04:19 05/08/04
Go up one level in this thread
On May 08, 2004 at 20:20:25, Vincent Diepeveen wrote: >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 Totally convincing. After all your program _never_ makes a tactical mistake, particularly at 5 ply and beyond. BTW, the JICCA reference is ??? the quote about my speedup formula working for any number of processors is ??? The NUMA contradiction (Crafty sucks on NUMA hardware, Opteron is very good SMP platform (it is NUMA) is resolved how??? Evidence that Crafty would be 10% faster without the tree pointer can be found where?? Everyone is waiting... > >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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