Author: Vincent Diepeveen
Date: 15:46:45 04/24/04
Go up one level in this thread
On April 24, 2004 at 17:42:30, Uri Blass wrote: when in analysis mode, crafty is not using a-symmetric king safety. In game mode it does. So please use a-symmetric king safety instead of analysis mode to see whether it finds it. As it uses that game mode when playing a game which is what counts. >On April 24, 2004 at 17:06:29, Mike Byrne wrote: > >>On April 24, 2004 at 12:51:02, Will Singleton wrote: >> >>>[D]rn1qk2r/p2nbp2/1p2p1p1/2ppP1Np/3P1PP1/P1N1B2Q/1PP4P/R3KR2 w Qkq - 0 16 >>> >>>Nxf7 is a pretty speculative move, I don't think any other chess program would >>>play this. Turns out to be crushing, though. Would be amazing if Hydra saw >>>this tactically. >> >>White(1): rn1qk2r/p2nbp2/1p2p1p1/2ppP1Np/3P1PP1/P1N1B2Q/1PP4P/R3KR2 w Qkq - 0 1 >> >>White(1): go >> time surplus 0.00 time limit 166:39 (166:39)/(30) >> time surplus 0.00 time limit 166:39 (166:39)/(30) >> depth time score variation (1) >> 1 0.00 -2.96 1. f5 Bxg5 2. Bxg5 Qxg5 3. fxe6 fxe6 >> 4. gxh5 >> 1 0.00 0.33 1. O-O-O >> 1-> 0.00 0.33 1. O-O-O >> 2 0.00 0.24 1. O-O-O c4 >> 2-> 0.02 0.24 1. O-O-O c4 >> 3 0.02 0.26 1. O-O-O Nc6 2. dxc5 Nxc5 >> 3-> 0.03 0.26 1. O-O-O Nc6 2. dxc5 Nxc5 (s=2) >> 4 0.05 0.18 1. O-O-O cxd4 2. Bxd4 Nc6 3. gxh5 Nxd4 >> 4. Rxd4 gxh5 >> 4-> 0.06 0.18 1. O-O-O cxd4 2. Bxd4 Nc6 3. gxh5 Nxd4 >> 4. Rxd4 gxh5 (s=2) >> 5 0.08 -1 1. O-O-O >> 5 0.08 -0.50 1. O-O-O cxd4 2. Rxd4 Nc6 3. Rdd1 Bxg5 >> 4. fxg5 Ndxe5 5. gxh5 gxh5 >> 5 0.13 -0.03 1. dxc5 bxc5 2. gxh5 Rxh5 3. Qg3 Nc6 >> 5-> 0.17 -0.03 1. dxc5 bxc5 2. gxh5 Rxh5 3. Qg3 Nc6 >> 6 0.22 -0.09 1. dxc5 bxc5 2. gxh5 Rxh5 3. Qg2 Bxg5 >> 4. fxg5 Nxe5 5. Bxc5 Rxg5 >> 6 0.42 0.12 1. Nb5 Nc6 2. dxc5 Nxc5 3. O-O-O a6 >> 4. Bxc5 axb5 5. Bxe7 Nxe7 6. gxh5 gxh5 >> 6-> 0.53 0.12 1. Nb5 Nc6 2. dxc5 Nxc5 3. O-O-O a6 >> 4. Bxc5 axb5 5. Bxe7 Nxe7 6. gxh5 gxh5 >> (s=3) >> 7 0.88 0.06 1. Nb5 Nc6 2. O-O-O cxd4 3. Nxd4 Nxd4 >> 4. Bxd4 Bxg5 5. fxg5 Qxg5+ (s=2) >> 7 1.14 +1 1. Nxf7!! >> 7 1.19 0.62 1. Nxf7 Kxf7 2. f5 Bh4+ 3. Kd2 exf5 >> 4. gxf5 cxd4 5. fxg6+ Kxg6 <HT> >> 7-> 1.19 0.62 1. Nxf7 Kxf7 2. f5 Bh4+ 3. Kd2 exf5 >> 4. gxf5 cxd4 5. fxg6+ Kxg6 <HT> (s=4) >> 8 1.30 +1 1. Nxf7!! >> 8 1.45 1.18 1. Nxf7 Kxf7 2. f5 Bh4+ 3. Kd2 Ke8 >> 4. fxe6 Nf8 5. gxh5 cxd4 (s=3) >> 8-> 1.61 1.18 1. Nxf7 Kxf7 2. f5 Bh4+ 3. Kd2 Ke8 >> 4. fxe6 Nf8 5. gxh5 cxd4 >> 9 2.11 1.09 1. Nxf7 Kxf7 2. f5 Bh4+ 3. Kd1 Ke8 >> 4. fxe6 Nf8 5. gxh5 cxd4 >> 9-> 2.28 1.09 1. Nxf7 Kxf7 2. f5 Bh4+ 3. Kd1 Ke8 >> 4. fxe6 Nf8 5. gxh5 cxd4 >> 10 4.22 1.25 1. Nxf7 Kxf7 2. f5 cxd4 3. fxe6+ Kg8 >> 4. Bxd4 Nf8 5. O-O-O Nxe6 6. Kb1 >> 10-> 4.80 1.25 1. Nxf7 Kxf7 2. f5 cxd4 3. fxe6+ Kg8 >> 4. Bxd4 Nf8 5. O-O-O Nxe6 6. Kb1 >> 11 10.55 0.97 1. Nxf7 Kxf7 2. f5 Bh4+ 3. Bf2 Bxf2+ >> 4. Rxf2 cxd4 5. fxe6+ Ke7 6. Nxd5+ >> Kxe6 7. Nf4+ Kxe5 8. Nxg6+ Kd6 9. Nxh8 >> Qxh8 10. gxh5 >> 11-> 15.31 0.97 1. Nxf7 Kxf7 2. f5 Bh4+ 3. Bf2 Bxf2+ >> 4. Rxf2 cxd4 5. fxe6+ Ke7 6. Nxd5+ >> Kxe6 7. Nf4+ Kxe5 8. Nxg6+ Kd6 9. Nxh8 >> Qxh8 10. gxh5 >> 12 22.22 +1 1. Nxf7!! >> 12 25.53 1.37 1. Nxf7 Kxf7 2. f5 Bh4+ 3. Bf2 Bxf2+ >> 4. Rxf2 exf5 5. gxf5 cxd4 6. fxg6+ >> Kg7 7. Qe6 dxc3 8. Rf7+ Kh6 9. g7+ >> Kg5 10. gxh8=Q Qxh8 >> 12-> 27.95 1.37 1. Nxf7 Kxf7 2. f5 Bh4+ 3. Bf2 Bxf2+ >> 4. Rxf2 exf5 5. gxf5 cxd4 6. fxg6+ >> Kg7 7. Qe6 dxc3 8. Rf7+ Kh6 9. g7+ >> Kg5 10. gxh8=Q Qxh8 >>? 13 45.02 1/41* 1. Nxf7 >>White(1): ? >> time=53.20 cpu=185% mat=0 n=45328093 fh=90% nps=852K >> ext-> chk=1736709 cap=179025 pp=128620 1rep=124260 mate=2772 >> predicted=0 nodes=45328093 evals=17756672 50move=0 >> endgame tablebase-> probes=0 hits=0 >> SMP-> split=598 stop=84 data=5/128 cpu=1:38 elap=53.20 >> >> >> >>White(1): Nxf7 >> time used: 53.20 >> >>looks pretty sound to me ... > >Which program did you use > >Crafty19.12(1 cpu) can find it but it is not so speculative like the program >that you used and does not see a score of more than +1 for white. > >older crafty(19.01) needs more time and finds it only with a negative score at >depth 11 and 0.01 score at depth 12 and it may be interesting to know what >changes did Bob to teach Crafty to solve it(I guess that the difference is >result of evaluation changes and not search changes). > > >Analysis under chessbase > >Hydra - Diep >rn1qk2r/p2nbp2/1p2p1p1/2ppP1Np/3P1PP1/P1N1B2Q/1PP4P/R3KR2 w Qkq - 0 1 > >Analysis by Crafty 19.12: > >16.0-0-0 Bxg5 17.fxg5 cxd4 18.Bxd4 Qxg5+ > = (0.18) Depth: 1/16 00:00:00 >16.0-0-0 Bxg5 17.fxg5 cxd4 18.Bxd4 Qxg5+ > = (0.18) Depth: 2/16 00:00:00 >16.0-0-0 Bxg5 17.fxg5 cxd4 18.Bxd4 Qxg5+ > = (0.18) Depth: 3/16 00:00:00 >16.0-0-0 cxd4 17.Rxd4 Nc6 18.Rdd1 Bxg5 19.fxg5 Ndxe5 20.gxh5 Rxh5 > ³ (-0.60) Depth: 4/16 00:00:00 >16.dxc5 bxc5 17.gxh5 Rxh5 18.Qg3 Nc6 > = (-0.25) Depth: 4/16 00:00:00 >16.Nf3 Nc6 17.0-0-0 c4 > = (-0.19) Depth: 4/16 00:00:00 >16.Nf3 cxd4 17.Bxd4 Nc6 18.0-0-0 Qc7 > = (-0.14) Depth: 5/20 00:00:00 >16.Nf3 cxd4 17.Nxd4 Bh4+ 18.Bf2 hxg4 19.Qxg4 Bxf2+ 20.Rxf2 Na6 > = (-0.14) Depth: 6/20 00:00:00 120kN >16.Nb5 Nc6 17.0-0-0 cxd4 18.Nxd4 Nxd4 19.Bxd4 Bxg5 20.fxg5 Qxg5+ > = (-0.09) Depth: 6/20 00:00:01 250kN >16.Nb5 a6 17.Nd6+ Bxd6 18.exd6 c4 19.0-0-0 Nf8 20.f5 Qxd6 21.fxe6 fxe6 > = (0.09) Depth: 7/23 00:00:02 507kN >16.Nb5 Nf8 17.dxc5 bxc5 18.0-0-0 a6 19.Nc3 Nbd7 20.Nf3 > = (0.10) Depth: 8/26 00:00:07 1884kN >16.Nxf7 Kxf7 17.f5 Bh4+ 18.Kd2 Nf8 19.fxe6+ Ke8 20.gxh5 cxd4 > ² (0.32) Depth: 8/26 00:00:09 2447kN >16.Nxf7 Kxf7 17.f5 Bh4+ 18.Kd1 cxd4 19.fxe6+ Kg8 20.Bxd4 Nf8 21.gxh5 Rxh5 > ² (0.46) Depth: 9/26 00:00:11 3143kN >16.Nxf7 Kxf7 17.f5 Bh4+ 18.Bf2 Bxf2+ 19.Rxf2 exf5 20.gxf5 cxd4 21.fxg6+ Kxg6 >22.Qe6+ Kg5 23.Rf5+ Kh4 24.Rf4+ Kg5 25.Qf5+ Kh6 26.Nxd5 > = (0.23) Depth: 10/30 00:00:22 6492kN >16.Nxf7 Kxf7 17.f5 Bh4+ 18.Bf2 Bxf2+ 19.Rxf2 exf5 20.gxf5 cxd4 21.fxg6+ Kg7 >22.Rf7+ Kxg6 23.Qe6+ Kg5 24.Qf5+ Kh6 25.Nxd5 > ² (0.53) Depth: 11/33 00:00:50 14761kN >16.Nxf7 Kxf7 17.f5 cxd4 18.Bxd4 Nf8 19.0-0-0 Ke8 20.f6 Bc5 21.Bxc5 bxc5 22.gxh5 >Rxh5 > ² (0.59) Depth: 12/36 00:03:01 58302kN > > > >Hydra - Diep >rn1qk2r/p2nbp2/1p2p1p1/2ppP1Np/3P1PP1/P1N1B2Q/1PP4P/R3KR2 w Qkq - 0 1 > >Analysis by Crafty 19.01: > >16.dxc5 Nxc5 > = (-0.07) Depth: 1/21 00:00:00 >16.dxc5 Nxc5 > = (-0.07) Depth: 2/21 00:00:00 >16.dxc5 bxc5 17.Nf3 > = (-0.07) Depth: 3/21 00:00:00 >16.dxc5 bxc5 17.gxh5 Rxh5 18.Qg3 > = (-0.03) Depth: 4/21 00:00:00 >16.dxc5 bxc5 17.gxh5 Rxh5 18.Qg3 Nc6 > ³ (-0.33) Depth: 5/21 00:00:00 >16.Nb5 cxd4 17.Bxd4 Nc6 18.Nf3 Nxd4 19.Nfxd4 > ³ (-0.32) Depth: 5/21 00:00:00 >16.Nb5 cxd4 17.Bxd4 Nc6 18.Nf3 a6 > ³ (-0.39) Depth: 6/22 00:00:00 64kN >16.Nf3 Nc6 17.dxc5 Nxc5 18.f5 exf5 19.gxf5 > ³ (-0.36) Depth: 6/22 00:00:00 114kN >16.Nf3 Nc6 17.Nb5 cxd4 18.Nfxd4 Bh4+ 19.Bf2 Nxd4 20.Nxd4 hxg4 21.Qxg4 > ³ (-0.42) Depth: 7/25 00:00:01 236kN >16.Nf3 Nc6 17.Nb5 cxd4 18.Nfxd4 Nxd4 19.Bxd4 Bh4+ 20.Bf2 Be7 > ³ (-0.39) Depth: 8/25 00:00:03 628kN >16.Nf3 Nc6 17.Ne2 cxd4 18.Bxd4 a6 19.Ng3 Nxd4 20.Nxd4 Bc5 > ³ (-0.53) Depth: 9/29 00:00:07 1685kN >16.Nb5 Nc6 17.f5 exf5 18.gxf5 Nxd4 19.Bxd4 cxd4 20.fxg6 fxg6 > ³ (-0.52) Depth: 9/29 00:00:10 2665kN >16.dxc5 bxc5 17.gxh5 Rxh5 18.Qg2 Bxg5 19.fxg5 Nc6 20.Qf2 Ndxe5 21.0-0-0 > ³ (-0.42) Depth: 9/29 00:00:14 4043kN >16.dxc5 bxc5 17.gxh5 Rxh5 18.Qg2 Bxg5 19.fxg5 Nc6 20.0-0-0 Ndxe5 21.Qe2 Nc4 > ³ (-0.52) Depth: 10/29 00:00:20 5930kN >16.Nb5 Nc6 17.f5 Nxd4 18.fxe6 fxe6 19.Nxd4 Bxg5 20.Nxe6 Bh4+ 21.Bf2 hxg4 22.Bxh4 >Rxh4 > = (-0.10) Depth: 10/29 00:00:34 10040kN >16.Nb5 cxd4 17.Bxd4 Nc6 18.Qc3 Rc8 19.gxh5 Nb4 20.Nxf7 Kxf7 21.hxg6+ Kxg6 >22.Rg1+ > µ (-0.73) Depth: 11/31 00:00:53 16689kN >16.dxc5 bxc5 17.Qg2 Bxg5 18.fxg5 Nxe5 19.gxh5 Rxh5 20.Bxc5 Rxg5 21.Qe2 Nbd7 >22.h4 > ³ (-0.44) Depth: 11/31 00:01:34 30063kN >16.Nf3 Nc6 17.0-0-0 Qc8 18.gxh5 Rxh5 19.Qg2 c4 20.Kb1 Qa6 21.Ng5 > ³ (-0.34) Depth: 11/31 00:02:17 43097kN >16.Nxf7 Kxf7 17.f5 Bh4+ 18.Bf2 Bxf2+ 19.Rxf2 exf5 20.gxf5 cxd4 21.fxg6+ Kxg6 >22.Qe6+ Kg5 23.Qf5+ Kh6 24.Nxd5 > = (-0.07) Depth: 11/31 00:02:42 51734kN >16.Nxf7 Kxf7 17.f5 cxd4 18.fxe6+ Kg8 19.Bxd4 Bh4+ 20.Bf2 Bxf2+ 21.Rxf2 Nxe5 >22.g5 Ng4 23.Rd2 > = (0.01) Depth: 12/33 00:03:09 60898kN > >Uri
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