Author: Uri Blass
Date: 10:06:06 02/16/03
Go up one level in this thread
On February 16, 2003 at 12:50:40, Roy Brunjes wrote:
>As advanced as modern chess playing software is, programs can still be led into
>dangerous positions with their kingside completely undeveloped when the smell of
>a material win is too great for their eval function to avoid...
>
>Of course Eduard Nemeth is well known on this board for doing this against lots
>of programs. Here the damage is done by another program however:
>
>
>[Event "Blitz:15'+10""]
>[Site "MyTown"]
>[Date "2003.02.16"]
>[Round "?"]
>[White "Fritz 8, 500 MHz"]
>[Black "CM9000 Junior, 700 MHz"]
>[Result "0-1"]
>[ECO "E81"]
>[PlyCount "86"]
>[TimeControl "900+10"]
>
>{64MB, Fritz8.ctg, Pentium III 500MHz
>} 1. d4 {0} Nf6 {5} 2. c4 {0} g6 {3} 3.
>Nc3 {0} Bg7 {3} 4. e4 {0} d6 {4} 5. f3 {0} O-O {4} 6. Be3 {0} c5 {42} 7. dxc5 {
>0} dxc5 {4} 8. e5 {0} Nfd7 {4} 9. f4 {0} f6 {5} 10. exf6 {0} Rxf6 {4} 11. Qd5+
>{31} Kh8 {19} 12. Ne4 {82} Ra6 {4} 13. Ng5 {31} e6 {39} 14. Nf7+ {40} Kg8 {4}
>15. Nxd8 {37} exd5 {2} 16. cxd5 {30} Nb6 {5} 17. Bxc5 {46} Bxb2 {38} 18. Rb1 {0
>} Bc3+ {51} 19. Kd1 {31} Rxa2 {19} 20. Bxb6 {7} axb6 {39} 21. Nf3 {30} Bf5 {55}
>22. Rc1 {0} Bb2 {34} 23. Bc4 {3} Bxc1 {26} 24. Bxa2 {2} Rxa2 {30} 25. Re1 {11}
>Bxf4 {22} 26. Re8+ {51} Kg7 {3} 27. Ne6+ {28} Bxe6 {22} 28. dxe6 {0} Nc6 {34}
>29. e7 {31} Kf7 {5} 30. Rf8+ {35} Kxe7 {4} 31. Rxf4 {16} Rxg2 {57} 32. Re4+ {0}
>Kd6 {10} 33. Re2 {39} Rxe2 {36} 34. Kxe2 {0} Kd5 {26} 35. Ng5 {33} h6 {3} 36.
>Nf7 {21} b5 {18} 37. Nxh6 {22} Ne5 {7} 38. Kd2 {22} Ke6 {28} 39. Kc3 {39} Kf6 {
>25} 40. h4 {0} Kg7 {27} 41. h5 {0} Kxh6 {29} 42. hxg6 {27} Nc6 {7} 43. Kd3 {30}
>b4 {28} 0-1
>
>With 16 ... Nb6, Black offers up some material that White cannot pass up. White
>munches on the pawn and later chokes on Black's piece activity while the white
>king gets left in the center. Even winning the exchange with 17. Bxa6 does not
>seem good to me: 17. Bxa6 Nxa6 18. Nf3 Nxd5 and the White King must pass on
>castling and protect the bishop with 19. Kf2. And of course the N on d8 is
>toast now that the d5 pawn is gone.
>
>I think that perhaps 17. Nf3 is the best course of action to get some
>development and to move closer towards castling.
>
>I thought the Knight trap played by CM9000 Junior was also pretty nice. With 36
>... b5 (ignoring the threat of Nxh6 because of ... Ne5 confining the White
>Knight and allowing the Black King to stroll over and pick it off. I'm sure
>it's not a real complex idea, but I'm not that strong a player so it seemed nice
>to me.
>
>Roy
Fritz8 agree with you that 17.Nf3 is the best
Fritz 8,5 - CM9000 Junior,7
[D]rnbN2k1/pp4bp/rn4p1/2pP4/5P2/4B3/PP4PP/R3KBNR w KQ - 0 1
Analysis by Fritz 8:
17.Bxc5 Bxb2 18.Bxa6 Bxa1 19.Bxb7 Bxb7 20.Nxb7 Bc3+ 21.Kf2 Nxd5
± (0.97) Depth: 6/22 00:00:00 185kN
17.Bxc5 Bxb2 18.Bxa6 Bxa1 19.Bxb7 Bxb7 20.Nxb7 Bc3+ 21.Kf2 Nxd5
± (0.97) Depth: 7/19 00:00:00 192kN
17.Bxc5 Bxb2 18.Bxa6 Bxa1 19.Bxb7 Bxb7 20.Nxb7 Nxd5 21.Ne2 Nd7
± (1.03) Depth: 8/22 00:00:00 347kN
17.Bxc5 Bxb2 18.Bxa6 Nxa6 19.Bxb6 Bxa1 20.Ba5 Nc5 21.Nf3 Nd3+
± (0.97) Depth: 9/25 00:00:02 879kN
17.Bxc5 Bxb2 18.Bxa6 Nxa6 19.Bxb6 Bxa1 20.Ba5 Nc5 21.Nf3 Ne4
± (0.81) Depth: 10/27 00:00:05 1884kN
17.Bxc5--
² (0.53) Depth: 11/27 00:00:13 5307kN
17.Bxc5 Bxb2 18.Bxa6 Nxa6 19.Bxb6 Bxa1 20.Ba5
= (-0.09) Depth: 11/35 00:00:15 6399kN
17.Nf3!
= (-0.06) Depth: 11/35 00:00:25 10719kN
17.d6!
= (-0.03) Depth: 11/35 00:00:49 19963kN
17.d6 Ra4 18.Bxc5 Bxb2 19.Rb1 Bf6 20.Bxb6 axb6 21.Rc1
= (0.03) Depth: 11/35 00:00:52 21463kN
17.Bxa6!
= (0.06) Depth: 11/35 00:00:55 22443kN
17.Bxa6 Nxa6 18.d6 Nc4 19.Kf2 Bxb2 20.Re1 Nxd6 21.Rd1 Ne4+ 22.Kf3 Nc3
= (0.09) Depth: 11/35 00:00:56 22816kN
17.Bxa6 Nxa6 18.d6 Nc4 19.Kf2 Bxb2 20.Re1 Nxd6 21.Rd1 Nc4 22.Nf3 b5
= (-0.12) Depth: 12/30 00:01:10 28717kN
17.Nf3!
= (-0.09) Depth: 12/31 00:01:25 34728kN
17.Nf3 Bxb2 18.Bxa6 Nxa6 19.Rd1 Bh3 20.gxh3 Rxd8 21.Rb1 Bc3+ 22.Ke2 Bb4 23.Ne5
Nxd5
= (0.03) Depth: 12/31 00:01:29 36553kN
(Blass, Tel-Aviv 16.02.2003)
Uri
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