Author: Stan Arts
Date: 03:12:24 06/09/04
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)
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