Author: scott farrell
Date: 04:58:59 12/21/02
Go up one level in this thread
On December 21, 2002 at 01:48:41, Dana Turnmire wrote: Great thread. I am working on this sort of thing at the moment. I have been trying to make it play GM moves, with lots of sacs, and positional trickery. >I picked up a book entitled "Multiple Choice Chess" by IM Graeme Buckley. Here >are six positions from the game Ward-Voskanian (1995) in which the best move >must be made. I ran four different programs on an AMD 1800+ computer to see how >they compared. I'm assuming since Mr. Buckley is a strong IM he typifies how a >strong human player assesses a position. > >[Event "?"] >[Site "?"] >[Date "1995.??.??"] >[Round "?"] >[White "Ward, Christopher"] >[Black "Voskanian, Vahagn"] >[Result "1-0"] >[ECO "D35"] > >1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 Nbd7 7. Bd3 Nf8 8. >Qc2 Ne6 9. Bh4 c6 10. Nf3 g6 11. O-O O-O 12. Rab1 Ng7 13. b4 a6 14. a4 Bf5 15. >Ne5 Bxd3 16. Nxd3 Nf5 17. Bxf6 Bxf6 18. b5 axb5 19. axb5 Nd6 20. bxc6 bxc6 21. >Nb4 Qd7 22. Na4 Nc4 23. Nc5 Qd6 24. Rb3 Rfb8 25. Nba6 Rb5 26. Rxb5 cxb5 27. >Nb4 Bd8 28. g3 Bb6 29. Nbd3 Bxc5 30. dxc5 Qf6 31. Nb4 Rc8 32. c6 d4 33. exd4 >Qxd4 34. Rd1 Qe5 35. Qd3 Qe6 36. Qd5 Ne5 37. Rc1 Ng4 38. Qd4 Qe2 39. c7 h5 40. >Nd5 1-0 > >1. Solution: 21.Nb4 - This move begins the attack on Black's weak backward pawn >on a semi-open file. my java chompster got Nb4 straight away, lost it at depth 9, and got it back at depth 10 and onwards. > >Arasan 6.1 - 21.Rfc1 >CM9000 (default) - 21.Rb4 >Genius 7 - 21.Ra1 >Ruffian - 21.Nc5 > >[D]r2q1rk1/5p1p/2pn1bp1/3p4/3P4/2NNP3/2Q2PPP/1R3RK1 w - - 0 21 > >2. Solution: 22.Na4 - Makes a forking threat on b6 and adds an attack on c6. > >Arasan 6.1 - 22.Nd3 >*CM9000* (default) - 22.Na4 >*Genius 7* - 22.Na4 >Ruffian - 22.Nd3 chompster got this one straight away also. > >[D]r4rk1/3q1p1p/2pn1bp1/3p4/1N1P4/2N1P3/2Q2PPP/1R3RK1 w - - 0 22 > >3. Solution: 25.Nba6 - This knight to a6 threatens to take control of the >b-file and ...Rb6 is obviously prevented. > >Arasan 6.1 - 25.Rc1 >CM9000 (default) - 25.Rc1 >*Genius 7* - 25.Nba6 >Ruffian - 25.Rc1 3 out of 2 so far, not bad for chompster .... > >[D]rr4k1/5p1p/2pq1bp1/2Np4/1NnP4/1R2P3/2Q2PPP/5RK1 w - - 0 25 > >4. Solution: 26.Rxb5 - Splits the black pawns after the recapture. In this way >White exchanges one advantage (Black's backward pawn) for another (the split b- >and d-pawns). In addition, Black's d-pawn will become isolated. > >*Arasan 6.1* - 26.Rxb5 >CM9000 (default) - 26.Rfb1 >*Genius 7* - 26.Rxb5 >Ruffian - 26.Rfb1 4 out of 4, looking good for chompster, I am experimenting with huge positional values, I think it is paying off in these positions. > >[D]r5k1/5p1p/N1pq1bp1/1rNp4/2nP4/1R2P3/2Q2PPP/5RK1 w - - 0 26 > >5. Solution: 31.Nb4 - An impressive multi-purpose move. White now defends the >square c6 to aid in the advance of the c-pawn. Black has a passed pawn too, but >for the moment its path is blocked and thus the b-pawn is not looking dangerous. > 31.Nb4 also attacks the d5 pawn. > >Arasan 6.1 - 31.Qe2 >*CM9000* (default) - 31.Nb4 >*Genius 7* - 31.Nb4 >*Ruffian* - 31.Nb4 > I dont believe it 5 out of 5 .... >[D]r5k1/5p1p/5qp1/1pPp4/2n5/3NP1P1/2Q2P1P/5RK1 w - - 0 31 > >6. Solution 37.Rc1 - If the queens are exchanged now, then the knight on d5 >assists in the pushing the pawn to the 7th rank. > >Arasan 6.1 - 37.c7 >CM9000 (default) - 37.Qxe6 >Genius 7 - 37.Qxe6 >Ruffian - 37.c7 5 out of 6 aint bad, chompster wanted to swaps queens immediately. > >[D]2r3k1/5p1p/2P1q1p1/1p1Qn3/1N6/6P1/5P1P/3R2K1 w - - 0 37 I enjoyed those positional tests, I'll dig up some I am using and post them Scott (chompster)
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