Author: Robert Hyatt
Date: 10:04:14 11/10/03
Go up one level in this thread
On November 10, 2003 at 03:37:58, Eduard Nemeth wrote:
>[Event "4NCL West Bromwich ENG"]
>[Site "?"]
>[Date "2003.??.??"]
>[Round "2"]
>[White "McDonald, N."]
>[Black "Turner, M."]
>[Result "0-1"]
>[ECO "C47"]
>[WhiteElo "2380"]
>[BlackElo "2505"]
>[PlyCount "104"]
>[EventDate "2003.??.??"]
>
>1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 d5 8.
>exd5 cxd5 9. O-O O-O 10. Bg5 c6 11. Ne2 Bg4 12. c3 Be7 13. Qc2 h6 14. Bh4 Nh5
>15. Bxe7 Qxe7 16. Ng3 Nf4 17. Rae1 Qg5 18. Bf5 Rae8 19. Re3 Bxf5 20. Qxf5 Ne2+
>21. Rxe2 Qxf5 22. Rxe8 Qg4 23. Re7 h5 24. Rfe1 h4 25. h3 Qa4 26. Nf5 g6 27. Nd4
>c5 28. Nf3 Qxa2 29. Rb7 d4 30. cxd4 cxd4 31. Nxd4 Qd5 32. Rb4 Qa5 33. Nc6 Qc5
>34. Ne7+ Kg7 35. Rb7 Rd8 36. b4 Qc3 37. Rf1 a6 38. b5 axb5 39. Rxb5 Rd7 40.
>Nf5+ gxf5 41. Rxf5 Qd2 42. Rf3 Rd6 43. Kh1 Qe2 44. Rc1 Kg6 45. Ra1 Rd1+ 46.
>Rxd1 Qxd1+ 47. Kh2 Qxf3 48. gxf3 Kf5 49. Kh1 Kf4 50. Kg2 f6 51. Kg1 Kxf3 52.
>Kf1 f5 0-1
>
>After move 47 (white):
>
>McDonald,N - Turner,M
>
>[D]8/5p2/6k1/8/7p/5R1P/5PPK/3q4 b - - 0 1
>
>Interesting win is now Qxf3! (see game).
>
>Can your program this move find?
>
>Eduard
I ran this on Crafty, just to see what it would say. The first interesting
idea was Qd2 which wins one of white's pawns. Of course, it looks to me that
the fortress idea is still there after this is done. I didn't let it
go long enough to find Qxf3, but if I play Qxf3 myself, it takes crafty
18 plies and .32 seconds to see that gxf3 is a mate in 23 for black:
17 0.25 -2.98 48. gxf3 Kg5 49. Kh1 Kf4 50. Kg2 f5
51. Kg1 Kxf3 52. Kf1 f4 53. Kg1 Ke2
54. Kg2 f3+ 55. Kg1 Ke1 56. Kh2 Kxf2
17-> 0.26 -2.98 48. gxf3 Kg5 49. Kh1 Kf4 50. Kg2 f5
51. Kg1 Kxf3 52. Kf1 f4 53. Kg1 Ke2
54. Kg2 f3+ 55. Kg1 Ke1 56. Kh2 Kxf2
18 0.28 -- 48. gxf3
18 0.32 -Mat23 48. gxf3 Kg5 49. Kh1 Kf4 50. Kg2 f5
51. Kg1 Kxf3 52. Kf1 f4 53. Ke1 Kg2
54. Ke2 Kxh3 <EGTB>
18-> 0.47 -Mat23 48. gxf3 Kg5 49. Kh1 Kf4 50. Kg2 f5
51. Kg1 Kxf3 52. Kf1 f4 53. Ke1 Kg2
54. Ke2 Kxh3 <EGTB> (s=2)
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