Author: Howard Exner
Date: 00:04:21 03/12/99
Go up one level in this thread
On March 11, 1999 at 20:52:23, Jeremiah Penery wrote:
>On March 11, 1999 at 05:11:59, Howard Exner wrote:
>
>>8/7p/2P4k/2K5/PR6/3r2p1/8/8 b - - id Crafty 16.1 - Genius 6; am g2;
>
>What is the best alternative here? Rc3 is what Crafty likes, but it seems
>losing also after many plies (maybe).
I think you are correct on this. I initially thought either Rc3+ or Kg5
might draw this. These moves do draw if white incorrectly advances the
c pawn (by first moving its king to d7). In that event black marches up
his own g and h pawns and simply plays Rxc8 once white Queens. However
you made me look more carefully and white has a better plan by advancing his
a pawn instead. This is why I like posting positions here in this forum. There
are many avid problem solvers here and when they use there machines and own
chess knowledge many nice moves and refutations are discoverd. Some examples
that spring to mind are the Re8 defense in Kasparov - Topalov, and also
way back when Bruce Moreland and Ferret were I think first to suggest that
Kasparov could have drawn game # 2 against Deep Blue.
>
>>8/7k/p3q2p/7P/3Pp3/1P1Q4/8/2K5 w - - id Fritz 5.32 - Rebel 10; am Qc4;
>
>What was the continuation of this game? After 1. Qc4 Qg4 {Qf6}, white seems to
>be still winning.
The game continued with black replying Qxc4 bxc4, Kg7 0-1. White's connected
passed pawns are stopped while black's widely seperated ones march forward.
>
>>8/2Rb1rp1/5p1p/5N1P/4PKP1/8/4k3/8 b - - id Junior 5 - Shredder 3; am Kf2;
>
>This is unclear...Kf2 might not be best, but black might lose anyway.
I agree that White has the advantage here but after black's Kf2 Junior won
very quickly. Kd3 (or even Kd2) is a better move.
>
>>8/4k2p/8/3p1p2/p2Pp2P/PP5P/5P2/6K1 w - - id Junior 5 - Fritz 5; am bxa4;
>
>What was the continuation of this? Black might be able to win after 1. b4
>also...
[Event "40/40 PII-400 256MB"]
[Site "Cadaques"]
[Date "1998.10.15"]
[Round "?"]
[White "Junior 5"]
[Black "Fritz 5"]
[Result "0-1"]
[WhiteElo "?"]
[BlackElo "?"]
[ECO "C05"]
1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. c3 c5 6. Bd3 Nc6 7. Ne2 cxd4
8. cxd4 f6 9. exf6 Nxf6 10. Nf3 Bd6 11. O-O Qb6 12. Nc3 O-O 13. Be3 Bd7
14. a3 Be8 15. Ng5 Ne7 16. h3 Bc7 17. Qd2 Bg6 18. Rac1 Bxd3 19. Qxd3 Rac8
20. Na4 Qd6 21. g3 Ng6 22. Nc5 Rfe8 23. Nxb7 Qe7 24. Nc5 e5 25. Nce6 Bd6
26. Qf5 Rxc1 27. Rxc1 e4 28. Rc6 Nh4 29. gxh4 g6 30. Bf4 gxf5 31. Bxd6
Qxe6 32. Nxe6 Rxe6 33. Rc8+ Kf7 34. Be5 Ng8 35. Rd8 Ne7 36. Rd7 a5 37.
Bd6 Ke8 38. Rxe7+ Rxe7 39. Bxe7 Kxe7 40. b3 a4 41. bxa4 Kd6 42. Kg2 f4
43. a5 Kc6 44. a6 Kb6 45. a7 Kxa7 46. f3 e3 47. Kf1 h5 48. Ke2 Kb6 49.
Kd3 Kb5 50. Kc3 Ka4 51. Kc2 Kxa3 52. Kc3 Ka4 53. Kc2 Kb4 54. Kd3 Kb3 55.
Ke2 Kc3 56. Ke1 Kxd4 57. Ke2 Kc3 58. Ke1 d4 59. Kd1 d3 60. Ke1 Kc2 0-1
This is the entire game. Here is a sample line after b4 ...
1. b4 f4 2. f3! e3 3. h5 Kd6 4. Kf1 Kc6 5. Ke2 Kb5 6. Kd3 h6 7. h4 e2 8.
Kxe2 Kc4 9. Kd2 Kxd4 10. Ke2 Kc4 11. Kd2 =
>
>>8/8/8/6kP/8/r7/2K5/8 b - - id Shredder 3 - Junior 5; am Kh6;
>
>Kh6 still wins. This should be a trivial ending for most any chess program. :)
Uri explained what Junior is doing here in another post. Here is the actual
game.
[Event "40/40 PII-400 256MB"]
[Site "Cadaques"]
[Date "1999.01.12"]
[Round "?"]
[White "Shredder 3"]
[Black "Junior 5"]
[Result "0-1"]
[WhiteElo "?"]
[BlackElo "?"]
[ECO "C24"]
1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nf3 Bc5 5. c3 a6 6. O-O d6 7. d4 exd4
8. cxd4 Ba7 9. d5 Ne5 10. Nxe5 dxe5 11. Bg5 Qd6 12. Nd2 Bd4 13. Qb3 O-O
14. Be2 a5 15. Rac1 c6 16. dxc6 bxc6 17. Nc4 Qe6 18. Qf3 a4 19. Bh4 Ba6
20. Rfd1 Rab8 21. Rc2 Rb4 22. Rdc1 c5 23. h3 Nd7 24. Qh5 Nb6 25. Bg4 Qg6
26. Qxg6 hxg6 27. Nxb6 Rxb6 28. Be7 Rfb8 29. Bxc5 Rxb2 30. Rxb2 Rxb2 31.
a3 Ra2 32. Bxd4 exd4 33. Rc6 Bb7 34. Rc4 Rxa3 35. Rxd4 Ra1+ 36. Kh2 a3
37. Bf3 a2 38. Ra4 Bc6 39. Ra5 Bd7 40. Bg4 f5 41. exf5 gxf5 42. Bh5 Be6
43. Bg6 Kf8 44. Bxf5 Bc4 45. h4 Rd1 46. g4 a1=Q 47. Rxa1 Rxa1 48. Be4 Ra3
49. f3 Ra5 50. Kg3 Bd5 51. Bxd5 Rxd5 52. Kf4 Kf7 53. Ke4 Rd1 54. Kf5 g6+
55. Kg5 Rf1 56. Kf4 Kf6 57. Kg3 Ke5 58. Kg2 Ra1 59. Kg3 Rd1 60. f4+ Ke4
61. f5 gxf5 62. gxf5 Kxf5 63. Kf3 Rd3+ 64. Ke2 Rc3 65. Kd2 Ra3 66. h5 Kg5
67. Kc2 Kh6 68. Kb2 Rg3 69. Kc2 Rf3 70. Kb2 Rd3 71. Kc2 Rh3 72. Kb2 Re3
73. Kc2 Rg3 74. Kb2 Rh3 75. Kc2 Re3 76. Kd2 Re4 77. Kd3 Rh4 78. Kc3 Rf4
79. Kd3 Ra4 80. Ke3 Ra5 81. Kd3 Ra7 82. Kc4 Rd7 83. Kb4 Rc7 84. Ka4 Rb7
85. Ka5 Rb1 86. Ka4 Rb6 87. Ka5 Rb2 88. Ka4 Rb1 89. Ka3 Rb8 90. Ka4 Rb2
91. Ka3 Rb6 92. Ka2 Rb5 93. Ka1 Kg7 94. Ka2 Rb7 95. Ka1 Rb3 96. Ka2 Rb5
97. Ka3 Kh6 98. Ka4 Rb8 99. Ka3 Rb7 100. Ka2 Kg5 101. h6 Rh7 102. Ka3 Kg6
103. Ka2 Rb7 104. h7 Kxh7 105. Ka3 Kg6 106. Ka4 Kf5 107. Ka5 Ke6 108. Ka6
Rb3 109. Ka5 Kd5 110. Ka4 Kc4 111. Ka5 Kc5 112. Ka6 Rb6+ 113. Ka7 Kc6 114.
Ka8 Kc7 115. Ka7 Rh6 116. Ka8 Ra6# 0-1
Note that all of these games are in the computer web reports for download.
Most programs do searches on positions and you can easily find the entire games
from these positions.
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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