Author: Bryan Hofmann
Date: 06:27:58 06/09/04
Go up one level in this thread
On June 09, 2004 at 06:12:24, Stan Arts wrote: >Yesterday, in the evening took my tabletop chesscomputer outside for a quick >game. > >This position came on the board. > >[D]r4rk1/1Rp3pp/2pq4/p2p1p2/Q1nP4/2P1P3/P4PPP/2B2RK1 w - a6 0 18 > >Here, it's easy as a human to see I can trap the rook with the knight, and then >win the quality with my queen if white doesn't move it away first. Is there any >program that can see that fast as well? Probably by evaluation, (For instance >something like almost no mobility left and surrounded/paths stopped by opponent >pieces fairly close by) because by calculation it's very deep and takes a long >time. > >Neurosis does not have such code (yet) and needs depth 12 to see the rook will >be in trouble after playing Rd1, and then finds Qb3 that probably delays the >trouble till depth 13 or 14. The other program's I tried, seem to have the same >trouble and need similair depths. > >Neurosis's output. (One hour on my slow PIII-550 48mb hash, speculative 1) > >Legal moves: 32 Static score: 47 >Ply Score Time Nodes Best move and expected line >------------------------------------------------------------ >2 47 0 933 Qb3 c5 >3 48 0 1519 Qb3 c5 Bb2 >4 44 6 4309 Qb3 a4 Qc2 c5 >4 48 17 7369 Qc2 c5 Bb2 Nxb2 >5 39 39 20530 Qc2 Ra8-e8 Rd1 c5 Bb2 >6 32 121 70311 Qc2 c5 Bd2 cxd4 cxd4 c5 >7 23 429 240785 Qc2 c5 Re1 Qc6 Rb3 cxd4 cxd4 >7 24 511 291178 Qb3 < + > c5 Qb5 Rf6 >7 30 561 320674 Qb3 c5 Qb5 c6 Qxc5 Qxc5 dxc5 >8 17 1324 786007 Qb3 Ra6 Qc2 Rb6 Ra7 c5 Bd2 Rb2 Ra1 >8 18 1401 836391 Qc2 < + > c5 Re1 Qc6 Rb3 cxd4 cxd4 >8 18 1555 918079 Qc2 c5 Re1 Qc6 Bb2 Nd2 g4 Ra8-d8 >8 19 2236 1328063 Rd1 < + > Ra8-b8 Qb3 Rxb7 Qxb7 Rf7 >8 20 2340 1389702 Rd1 Ra8-b8 Qb3 a4 Qb1 Rxb7 Qxb7 Re8 >9 21 5663 3310854 Rd1 Ra8-b8 Rb3 Nb6 Qxa5 Nc4 Qc5 Qxc5 dxc5 >10 21 17780 10881418 Rd1 Ra8-b8 Qb3 Rxb7 Qxb7 Rd8 Bb2 c5 Rb1 Nxb2 >11 21 52542 33090279 Rd1 Ra8-b8 Qb3 Rxb7 Qxb7 Rd8 Qb1 Qd7 Qb3 c5 dxc5 >Bb2 >12 -31 163612 100323049 Rd1 < - > Nb6 Qb3 Rf7 Qa3 Qd8 Qc5 Rf6 Rxc7 Qxc7 >Qxb6 Qxb6 >12 -31 171181 104500716 Rd1 Nb6 Rxb6 cxb6 Ba3 c5 dxc5 bxc5 c4 Qb6 cxd5 >Ra8-d8 >12 -30 210222 125003013 Qb3 < + > Ra6 Qc2 Rb6 Ra7 c5 dxc5 Qxc5 f3 Qd3 >12 5 322072 194423290 Qb3 c5 Rd1 a4 Qb1 cxd4 cxd4 Na5 Rb5 c6 Qb4 Qxb4 >Total nodes:217936078 n/sec:60600 (Q-nodes:38% max depth:31) > >Greetings Stan > >[Date "2004.06.08"] >[White "Saitek turbo advanced trainer mode d6 - 45 minutes game"] >[Black "Me"] > >1. Nf3 Nf6 2. d4 d5 3. c4 e6 4. Nc3 Bb4 5. cxd5 exd5 6. Qa4+ Nc6 7. e3 Ne4 >8. Bb5 Bd7 9. Qb3 Nd6 10. Bxc6 Bxc3+ 11. bxc3 Bxc6 12. Ne5 O-O 13. Nxc6 >bxc6 14. O-O Nc4 15. Qa4 Qd6 16. Rb1 f5 17. Rb7 a5 18. Qc2 Nb6 19. Bb2 c5 >20. dxc5 Qxc5 21. c4 Qc6 22. Qc3 Rf7 23. Rxb6 cxb6 24. cxd5 Qxd5 25. a3 Rf6 >26. Rc1 Rg6 27. g3 Rf8 28. h3 Qd6 29. Kf1 >(my time was running out, and was time for coffee) Tao is able to see some what quickly that the rook is in trouble; Tao57 Beta 1 00:00 -0.21 Rb3 1 00:00 0.27 Bb2 Nxb2 Rxb2 1 00:00 0.29 Qd1 2 00:00 -0.03 Qd1 c5 dxc5 Qxc5 2+ 00:00 -0.03 Bb2 2 00:00 0.07 Bb2 c5 3 00:00 -0.08 Bb2 Nxb2 Rxb2 c5 dxc5 Qxc5 3+ 00:00 -0.08 Qc2 3 00:00 0.06 Qc2 c5 Bb2 Nxb2 Qxb2 4 00:00 0.02 Qc2 Rae8 Bb2 c5 dxc5 Qxc5 4+ 00:00 0.02 Bb2 4 00:00 0.06 Bb2 c5 Rb1 Rab8 dxc5 Qxc5 5 00:00 0.05 Bb2 Rab8 Rxb8 Rxb8 6 00:00 -0.32 Bb2 Rab8 Rxb8 Rxb8 Bc1 c5 Ba3 6+ 00:00 -0.32 Rb3 6 00:00 0.00 Rb3 c5 Ba3 Nxa3 Qxa3 a4 Rb7 6+ 00:00 0.00 Qc2 6 00:00 0.03 Qc2 Ra6 Bd2 Rb6 Rb1 Rxb1+ Rxb1 c5 dxc5 Qxc5 7 00:00 -0.15 Qc2 Ra6 Rb3 c5 Bd2 Nxd2 Qxd2 Rb6 dxc5 Qxc5 7+ 00:00 -0.15 Rb3 7 00:00 -0.01 Rb3 Rab8 Ba3 Nxa3 Qxa3 Qxa3 Rxa3 8 00:01 0.00 Rb3 Nb6 Qa3 Nc4 Qa4 9 00:01 0.00 Rb3 Nb6 Qa3 Nc4 Qa4 10 00:04 -0.09 Rb3 Rfe8 Rb7 Rab8 Qb3 Qf8 a4 c5 Bb2 Rxb7 Qxb7 Nxb2 Qxb2 10+ 00:05 -0.09 Rd1 10 00:07 0.00 Rd1 Rfb8 Qb3 Rxb7 Qxb7 Rd8 a4 c5 dxc5 Qxc5 Bb2 Nxb2 Qxb2 11 00:11 -0.42 Rd1 Nb6 Qb3 Qd8 Ba3 Re8 Rb1 Qc8 Rxb6 cxb6 Qxb6 11+ 00:11 -0.42 Rb3 11 00:13 -0.11 Rb3 Rfe8 Rb7 Rab8 Rb3 c5 Ba3 Nxa3 Qxa3 Rxb3 axb3 12 00:33 -0.06 Rb3 Rfe8 Rb7 Reb8 Rb3 Rb6 Ba3 Nxa3 Qxa3 Qxa3 Rxa3 Rb2 Kh1 13 01:11 -0.06 Rb3 Rfe8 Rb7 Reb8 Rb3 Nb6 Qa3 Kf7 Kh1 Nc4 Qa4 c5 Ba3 Nxa3 Qxa3
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