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Subject: Re: Vlad the Impaler missed a win?

Author: Ricardo Gibert

Date: 21:40:22 10/14/00

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On October 15, 2000 at 00:11:19, Ricardo Gibert wrote:

>On October 14, 2000 at 19:42:41, Vincent Lejeune wrote:
>
>>*Kramnik - *Kasparov
>>[D]8/2N3R1/Pk6/8/8/8/2K5/7r w - - 0 1
>>
>>
>>
>>Analysis by Hiarcs 7.32:
>>
>>59.Rg8 Rh2+
>>  +-  (4.68)   Depth: 1   00:00:00
>>59.Rg8 Rh2+
>>  +-  (4.68)   Depth: 2/3   00:00:00
>>59.Rg8 Rh2+
>>  +-  (4.68)   Depth: 3/3   00:00:00
>>59.Rg8 Rh2+
>>  +-  (4.68)   Depth: 4/3   00:00:00
>>59.Rg8 Rh2+
>>  +-  (4.68)   Depth: 5/3   00:00:00
>>59.Rg8 Rh2+
>>  +-  (4.68)   Depth: 6/3   00:00:00
>>59.Rg8 Rh2+
>>  +-  (4.68)   Depth: 7/3   00:00:00
>>59.Rg8 Rh2+
>>  +-  (4.68)   Depth: 8/14   00:00:00  1kN, tb=1
>>59.Rg8 Rh2+
>>  +-  (4.68)   Depth: 9/18   00:00:00  5kN, tb=12
>>59.Rg8 Rh2+
>>  +-  (4.68)   Depth: 10/18   00:00:00  17kN, tb=68
>>59.Rg8 Rh2+ 60.Kc3 Rh3+ 61.Kd4 Rh4+ 62.Kd5 Rh5+ 63.Ke4 Rh4+ 64.Kd3
>>  +-  (4.69)   Depth: 11/21   00:00:09  476kN, tb=1713
>>59.Rg8 Rh2+
>>  +-  (4.94)   Depth: 12/30   00:00:24  1193kN, tb=4868
>>59.Rg8 Rh2+ 60.Kc3 Rh3+ 61.Kd4 Rh4+ 62.Ke5 Ra4 63.Rc8 Ra2 64.Ke6
>>  +-  (5.19)   Depth: 12/30   00:00:42  2408kN, tb=6708
>>59.Rg8 Rh2+ 60.Kc3 Rh3+ 61.Kd4 Rh4+ 62.Ke5 Rh5+ 63.Ke6 Rh6+ 64.Kf5 Rh5+ 65.Kf6
>>  +-  (5.23)   Depth: 13/30   00:01:17  5081kN, tb=12938
>>59.Rg8 Rh2+ 60.Kc3 Rh3+ 61.Kd4 Rh4+ 62.Ke5 Rh5+ 63.Ke6 Rh6+ 64.Kf5 Rh5+ 65.Kf6
>>Ra5
>>  +-  (5.19)   Depth: 14/30   00:01:59  7871kN, tb=24393
>>59.Rg8 Rh2+ 60.Kc3 Rh3+ 61.Kd4 Rh4+ 62.Ke5 Rh5+ 63.Kf6 Ra5 64.Rc8 Ra2 65.Ke5 Ra3
>>66.Kd6
>>  +-  (5.20)   Depth: 15/30   00:03:07  13189kN, tb=38595
>>
>>
>>
>>
>>
>>
>>*Kramnik - *Kasparov
>>8/2N3R1/Pk6/8/8/8/2K5/7r w - - 0 1
>>
>>Analysis by Crafty 17.11:
>>
>>59.Kc3
>>  +-  (6.35)   Depth: 1/2   00:00:00
>>59.Kc3 Rc1+ 60.Kb4 Rxc7
>>  +-  (1.97)   Depth: 2/3   00:00:00
>>59.a7
>>  +-  (2.37)   Depth: 2/3   00:00:00
>>59.a7 Kxa7 60.Kd3
>>  +-  (5.01)   Depth: 2/3   00:00:00
>>59.Nd5+ Kxa6 60.Kd3
>>  +-  (5.13)   Depth: 2/3   00:00:00
>>59.Kb3
>>  +-  (5.53)   Depth: 2/3   00:00:00
>>59.Kb3 Rd1
>>  +-  (6.21)   Depth: 2/3   00:00:00
>>59.Kb3 Rc1 60.Ne8 Kxa6
>>  +-  (5.13)   Depth: 3/8   00:00:00
>>59.Rd7
>>  +-  (5.53)   Depth: 3/8   00:00:00
>>59.Rd7 Rh3 60.Kb2
>>  +-  (6.19)   Depth: 3/8   00:00:00
>>59.Rd7 Rh3 60.Kb2 Ka7
>>  +-  (6.05)   Depth: 4/9   00:00:00
>>59.Rd7 Rh3 60.Kb2 Ka7 61.Rd8
>>  +-  (6.05)   Depth: 5/10   00:00:00
>>59.Rd7 Rh6 60.Kd3 Rc6 61.Nd5+ Kxa6 62.Nb4+ Kb5 63.Nxc6 Kxc6
>>  +-  (5.60)   Depth: 6/12   00:00:00  19kN, tb=140
>>59.Rd7 Rh8 60.Kd3 Rc8 61.Re7 Rxc7
>>  =  (0.00)   Depth: 7/14   00:00:01  46kN, tb=457
>>59.Rg8
>>  ²  (0.40)   Depth: 7/14   00:00:01  50kN, tb=514
>>59.Rg8 Rh2+ 60.Kd3 Rh3+ 61.Ke4 Rh4+ 62.Kf5 Rc4 63.Nd5+ Kxa6 64.Ke6
>>  +-  (4.98)   Depth: 7/14   00:00:02  133kN, tb=705
>>59.Rg8 Rh2+ 60.Kd3 Rh3+ 61.Ke4 Rh4+ 62.Ke5 Rh5+ 63.Kd6 Rh6+ 64.Ne6 Kxa6 65.Rc8
>>  +-  (5.13)   Depth: 8/19   00:00:03  195kN, tb=1181
>>59.Rg8 Rh2+ 60.Kd3 Rh3+ 61.Ke4 Rh4+ 62.Ke5 Rh5+ 63.Kd6 Rh6+ 64.Ne6 Kxa6 65.Rc8
>>  +-  (5.53)   Depth: 9/19   00:00:04  278kN, tb=1761
>>59.Rg8 Rh2+ 60.Kd3 Rh3+ 61.Ke4 Rh4+ 62.Ke5 Rh5+ 63.Kf6 Rh6+ 64.Kg7 Rc6 65.Rb8+
>>Kxc7 66.a7 Ra6 67.a8Q Rxa8 68.Rxa8
>>  +-  (5.55)   Depth: 10/23   00:00:10  1680kN, tb=2730
>>59.Rg8 Rh2+ 60.Kd3 Rh3+ 61.Ke4 Rh4+ 62.Ke5 Rh5+ 63.Kf6 Rh6+ 64.Kg7 Rc6 65.Rb8+
>>Kxc7 66.a7 Ra6 67.a8Q Rxa8 68.Rxa8
>>  +-  (5.55)   Depth: 11/23   00:00:14  1909kN, tb=4490
>>59.Rg8 Rh2+ 60.Kd3 Rh3+ 61.Ke4 Rh4+ 62.Ke5 Rh5+ 63.Kf6 Rh6+ 64.Kg7 Rc6 65.Rb8+
>>Kxc7 66.a7 Ra6 67.a8Q Rxa8 68.Rxa8
>>  +-  (5.55)   Depth: 12/25   00:00:18  2205kN, tb=4946
>>59.Rg8 Rh2+ 60.Kd3 Rh3+ 61.Ke4 Rh4+ 62.Ke5 Rh5+ 63.Kf6 Rh6+ 64.Ke7 Rh7+ 65.Kd6
>>Rh6+ 66.Kd5 Rh5+ 67.Ke6 Rh6+ 68.Kf5 Rc6 69.Nd5+ Ka7 70.Nb4
>>  +-  (5.59)   Depth: 13/26   00:00:29  3030kN, tb=6219
>>59.Rg8 Rh2+ 60.Kd3 Rh3+ 61.Ke4 Rh4+ 62.Ke5 Rh5+ 63.Kf6 Rh6+ 64.Kf5 Rh5+ 65.Kf4
>>Rh4+ 66.Kg3 Rc4 67.Rb8+ Kxc7 68.a7 Ra4 69.a8Q Rxa8 70.Rxa8
>>  +-  (5.55)   Depth: 14/29   00:00:39  5120kN, tb=7501
>>59.Rg8 Rh2+ 60.Kd3 Rh3+ 61.Ke4 Rh4+ 62.Ke5 Rh5+ 63.Kf6 Ra5 64.Rc8 Kc6 65.Ke6 Ra1
>>66.Nd5+ Kb5 67.Kd7 Rxa6 68.Nc7+ Ka5 69.Nxa6 Kxa6
>>  +-  (5.93)   Depth: 15/32   00:01:18  10341kN, tb=14539
>>59.Rg8 Rh2+ 60.Kd3 Rh3+ 61.Ke4 Rh4+ 62.Ke5 Rh5+ 63.Kf6 Ra5 64.Rc8 Ra1 65.Ke7 Kc5
>>66.Rb8 Kc6 67.Kd8 Rd1+ 68.Kc8 Rd7 69.Ne6
>>  +-  (5.93)   Depth: 16/34   00:01:49  16354kN, tb=20750
>>59.Rg8 Rh2+ 60.Kd3 Rh3+ 61.Ke4 Rh4+ 62.Ke5 Rh5+ 63.Kf6 Ra5 64.Rc8 Ra1 65.Ke6 Kc6
>>66.Nd5+ Kb5 67.Kd7 Rxa6 68.Nc7+ Ka5 69.Nxa6 Kxa6 70.Kc6 Ka5
>>  +-  (6.05)   Depth: 17/35   00:06:03  66417kN, tb=66376
>>
>>
>>More analysis in depth tomorrow (24 H after this message) I'll let analyse
>>Crafty ou Hiarcs 12-15 during hours with krpkr,krnkr and all 4-men tablebase.
>
>The following lines all seem to win:
>
>1.Rg8 Rh2+
>
>[1...Ra1 2.Nd5+
>
>if 2...Kb5 3.Nc3+ Kc6 (3...Kc5 4.Rg6; 3...Kb6 4.Rg6+ Kc7 5.Nb5+) 4.Rg6+ Kc5
>5.Re6 Rg1 6.Na4+
>
>if 2...Kc5 3.Rg5 Kb5 (3...Kd4 4.Nc7) 4.Kb2]
>
>2.Kc3 Rh3+ 3.Kd4 Rh4+ 4.Ke3 Rh3+ 5.Ke4 Rh4+ 6.Kf3 Rh3+ 7.Kg2 Ra3 8.Nd5+ Kc5
>9.Rg5
>
>This is already more work than I feel like putting into the position. It makes
>more sense for someone with the 5-man EGTBs to answer the question of whether
>"Vlad the Impaler" missed a win or not. Anyone?

Oops! I can't count! This position requires the 6-man EGTBs. Blah!



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