Author: James Robertson
Date: 21:48:26 12/10/99
Go up one level in this thread
On December 10, 1999 at 02:23:59, Steffen Jakob wrote:
>Hi all!
>
>The move Bxh6 from Hossa against Beadle caused a big discussion here. Today
>Hossa played another sac of this kind, this time with black at a3. Here is the
>score of the game:
>
>[Event "ICC 7 0"]
>[Site "Internet Chess Club"]
>[Date "1999.12.10"]
>[Round "-"]
>[White "PostModernist"]
>[Black "Hossa"]
>[Result "0-1"]
>[ICCResult "White checkmated"]
>[WhiteElo "2580"]
>[BlackElo "2507"]
>[Opening "Caro-Kann: classical, 6.h4"]
>[ECO "B18"]
>[NIC "CK.11"]
>[Time "01:47:02"]
>[TimeControl "420+0"]
>
>1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. h5 Bh7 8.
>Nf3 Nd7 9. Bd3 Qa5+ 10. Bd2 Qb6 11. Bxh7 Rxh7 12. Bc3 O-O-O 13. Qd2 e6 14.
>O-O-O Qa6 15. a3 Nb6 16. Ne5 f6 17. Ng6 Bxa3 18. bxa3 Nc4 19. Qe1 Qxa3+ 20.
>Kb1 Rd5 21. Qxe6+ Kc7 22. Qf7+ Kb6 23. Qxd5 cxd5 24. Rd3 Qa4 25. Nf4 Qc6 26.
>Re1 Kc7 27. Nf5 Qd7 28. Ne6+ Kc8 29. Rg3 Na3+ 30. Kb2 Ne7 31. Nxe7+ Qxe7 32.
>Nxg7 Nc4+ 33. Kb1 Qd7 34. Re8+ Kc7 35. Bb4 Kc6 36. Re7 Qc8 37. Re8 Qc7 38.
>Re6+ Kb5 39. Rb3 Ka4 40. Bc3 a5 41. Ra6 bxa6 42. Ne6 Re7 43. Nxc7 Rxc7 44.
>g3 Re7 45. Kc1 Re2 46. f3 Rh2 47. Be1 Rxh5 48. Kd1 Rh2 49. f4 f5 50. Kc1 Rg2
>51. Kd1 h5 52. Kc1 Re2 53. Kd1 Rh2 54. Kc1 Rg2 55. Kd1 Rg1 56. Ke2 Rh1 57.
>Rb7 Rh2+ 58. Kd3 Na3 59. Rb2 Rh3 60. Rb6 Rh1 61. Re6 Nc4 62. c3 Kb3 63. Ke2
>a4 64. Rxa6 a3 65. Ra7 a2 66. Rxa2 Kxa2 67. Bf2 Kb3 68. Kf3 Nd2+ 69. Kg2 Rb1
>70. Be3 Kxc3 71. Kh3 Nf3 72. Kg2 Ne1+ 73. Kh3 Kd3 74. Bg1 Nf3 75. Bf2 Kd2
>76. Kg2 Ke2 77. g4 hxg4 78. Kg3 Rf1 79. Kg2 Rxf2+ 80. Kg3 Rf1 81. Kg2 Rg1#
>{White checkmated}
>0-1
>
>
>The interesting position is after move 17 from white:
>
>2kr1bn1/pp4pr/qnp1ppNp/7P/3P4/P1B3N1/1PPQ1PP1/2KR3R b
>
>I had a short look at this position with crafty who said that after 17... Bxa3
>18. bxa3 Nc4 19. Qd3 Qxa3+ 20. Kb1 Rd5 21. Qxc4 Rb5+ 22. Qxb5 cxb5 white has a
>big advantage.
>
>Is there a better way for black to play? Maybe an idea is 20. ... b5 21. Nf4 g5
>22. hxg6 Rb7 23. Qf3 (23. Nxe6 b4 24. Ba1 b3 25. Qxc4 Qa2+ 26. Kc1 b2+ 27. Bxb2
>Qxc4) b4 24. Qxc6+ (24. Ba1 b3) Kb8 and I think black is winning.
>
>What does your program say? What do you say?
>
>Best wishes,
>Steffen.
On my P233 4MB hash tables, Insomniac 0.60 avoids Qe1? in 16 seconds. I don't
think that 20. ... b5 wins, as Fritz 6 suggests 21. Rhe1 with a large plus score
for white after more than a minute of searching.
James
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