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Subject: Re: Tricky endgame ... who wins? A Dead Draw!!!

Author: Terry Ripple

Date: 10:33:48 11/14/02

Go up one level in this thread


On November 14, 2002 at 12:32:57, Terry Ripple wrote:

>On November 14, 2002 at 08:31:19, Alastair Scott wrote:
>
>>[D] 8/4b3/6p1/3k4/5K2/7P/P5P1/8 w - - bm ;
>>
>>From a 5+2 game, myself (White) versus Ruffian 1.0.1; the position is after
>>Black's 55th move.
>>
>>What does your program think?
>>
>>[Event "Computer Chess Game"]
>>[Site "London, United Kingdom"]
>>[Date "2002.11.14"]
>>[Round  "1"]
>>[White "Alastair Scott"]
>>[Black "Ruffian 1.0.1 (P200 128MB)"]
>>[Result "1-0"]
>>[ECO "C78"]
>>[Opening "Ruy Lopez"]
>>[Time "12:59:45"]
>>[Variation "Archangelsk (counterthrust) variation"]
>>[TimeControl "300"]
>>
>>1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bb7 7. d3 Bd6 8.
>>Be3 Na5 9. Nbd2 O-O 10. c3 h6 11. Bc2 Ng4 12. Qe2 b4 13. h3 Nxe3 14. fxe3 bxc3
>>15. bxc3 Rb8 16. Rab1 Re8 17. Nh2 Re6 18. Rf5 Rf6 19. Qf2 Rxf5 20. Qxf5 Bc6
>>21. Ng4 Rxb1+ 22. Bxb1 Qg5 23. Qxg5 hxg5 24. Kf2 f6 25. Ke2 Bb5 26. c4 Ba4 27.
>>Nf2 Bb4 28. Nd1 Kf7 29. Nb2 Bc6 30. Bc2 Bb7 31. Bb1 f5 32. Nf3 fxe4 33. Nxg5+
>>Ke7 34. Nxe4 Ba3 35. Nd1 Bxe4 36. dxe4 Nxc4 37. Bd3 Nd6 38. Bxa6 Nxe4 39. Bd3
>>Nc5 40. Bb1 c6 41. Nc3 d5 42. Nd1 e4 43. Nf2 Nd7 44. Nd1 Bb4 45. Nf2 c5 46.
>>Bc2 c4 47. Nd1 Ne5 48. Nb2 Nd3 49. Bxd3 exd3+ 50. Nxd3 cxd3+ 51. Kxd3 Kd6 52.
>>e4 Ke5 53. exd5 Kxd5 54. Ke3 g6 55. Kf4 Be7 56. g3 Kd6 57. h4 Ke6 58. a4 Bd8
>>59. h5 g5+ 60. Kg4 Kf6 61. Kf3 Kg7 62. g4 Kf6 63. Ke4 Ba5 64. Kd5 Bd2 65. Kc4
>>Ke5 66. Kb5 Be3 67. a5 Kf6 68. Kc6 Bd4 69. Kb7 Ke5 70. a6 Ke6 71. a7 Bxa7 72.
>>Kxa7 Ke7 73. Kb6 Ke6 74. Kc6 Ke5 75. Kd7 Kf4 76. h6 Kxg4 77. h7 Kf3 78. h8=Q
>>g4 79. Qh1+ Kf2 80. Qh2+ Ke3 81. Qg3+ Ke4 82. Qxg4+ Ke5 83. Ke7 Kd5
>> {Black resigns} 1-0
>---------------------------
>RUFFIAN missed a dead drawn endgame! Too bad for Ruffian but good for you!!
>
>Did Ruffian offer the resignation?
>
>Regards,
>      Terry
-----------------------------

Here is some additional proof from Fritz 7 that this position is a dead draw!

Regards,
       Terry

New position
8/4b3/6p1/3k4/5K2/7P/P5P1/8 w - - 0 1

Analysis by Fritz 7:

1.g3 Kd6 2.h4 Bf6 3.a4 Bc3 4.Kg5
  µ  (-1.28)   depth: 7/12   00:00:00  15kN
1.g3 Kd6 2.h4 Kc5 3.Ke5 Kb5 4.Kd5 Bc5
  µ  (-1.34)   depth: 8/14   00:00:00  27kN
1.g3
  µ  (-1.06)   depth: 9/16   00:00:01  63kN, tb=7
1.g3
  µ  (-0.78)   depth: 10/16   00:00:01  137kN, tb=20
1.Kg4
  µ  (-0.75)   depth: 10/16   00:00:02  162kN, tb=20
1.Kg4
  ³  (-0.59)   depth: 10/16   00:00:02  182kN, tb=20
1.Kg4
  ³  (-0.28)   depth: 10/16   00:00:02  209kN, tb=20
1.Kg4 Bf6 2.h4 Kc5 3.h5 gxh5+ 4.Kxh5
  =  (0.00)   depth: 11/16   00:00:03  270kN, tb=31
1.Kg4
  ³  (-0.34)   depth: 12/16   00:00:03  302kN, tb=33
1.Kg4
  ³  (-0.34)   depth: 12/16   00:00:04  326kN, tb=40
1.Kg4
  =  (0.00)   depth: 13/17   00:00:06  504kN, tb=90
1.Kg4 Ke6 2.h4 Kf6 3.h5 g5 4.a4 Bd8 5.g3 Ba5 6.h6 Kg6 7.h7 Bc3
  =  (-0.21)   depth: 14/17   00:00:07  608kN, tb=106
1.Kg4 Ke6 2.h4 Kf6 3.h5 g5 4.a4 Bb4 5.Kf3 Kf5 6.g4+ Ke5 7.h6 Bc3 8.h7
  =  (-0.25)   depth: 15/20   00:00:09  837kN, tb=158
1.g3
  =  (-0.21)   depth: 15/22   00:00:17  1371kN, tb=561
1.g3 Ke6 2.h4 Kf6 3.g4 Bd6+ 4.Kf3 Ke5 5.g5 Kf5 6.h5 gxh5 7.g6 Kf6 8.g7
  =  (-0.18)   depth: 16/24   00:00:36  3035kN, tb=1824
1.a4
  =  (-0.15)   depth: 16/24   00:00:50  4145kN, tb=2432
1.a4 Ke6 2.a5 g5+ 3.Kg4 Kd7 4.g3 Kc8 5.h4 gxh4 6.gxh4
  =  (0.00)   depth: 16/24   00:01:02  5461kN, tb=3163
1.a4 Ke6 2.a5 g5+ 3.Kg4 Kd7 4.g3 Kc8 5.h4 gxh4 6.gxh4
  =  (0.00)   depth: 17/26   00:01:17  6673kN, tb=4165
1.a4 Ke6 2.a5 g5+ 3.Kg4 Kd7 4.g3 Kc8 5.h4 gxh4 6.gxh4
  =  (0.00)   depth: 18/28   00:01:43  8559kN, tb=6130
1.a4 Ke6 2.a5 g5+ 3.Kg4 Kd7 4.g3 Kc8 5.h4 gxh4 6.gxh4
  =  (0.00)   depth: 19/30   00:02:26  11695kN, tb=9839
1.a4 Ke6 2.a5 g5+ 3.Kg4 Kd7 4.g3 Kc8 5.h4 gxh4 6.gxh4
  =  (0.00)   depth: 20/32   00:03:51  17930kN, tb=17644
1.a4 Ke6 2.a5 g5+ 3.Kg4 Kd7 4.g3 Kc8 5.h4 gxh4 6.gxh4
  =  (0.00)   depth: 21/34   00:06:17  28900kN, tb=29896
1.a4 Ke6 2.a5 g5+ 3.Kg4 Kd7 4.g3 Kc8 5.h4 gxh4 6.gxh4
  =  (0.00)   depth: 22/35   00:10:10  46578kN, tb=50353
1.a4 Ke6 2.a5 g5+ 3.Kg4 Kd7 4.g3 Kc8 5.h4 gxh4 6.gxh4
  =  (0.00)   depth: 23/38   00:17:09  77655kN, tb=86415
1.a4 Ke6 2.a5 g5+ 3.Kg4 Kd7 4.g3 Kc8 5.h4 gxh4 6.gxh4
  =  (0.00)   depth: 24/38   00:28:48  128961kN, tb=151014





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