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Subject: Re: Doctor 3 avoided axb6

Author: Ed Schröder

Date: 23:14:10 08/16/99

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On August 16, 1999 at 23:55:49, Robert Hyatt wrote:

>On August 16, 1999 at 14:25:47, blass uri wrote:
>
>>
>>On August 16, 1999 at 12:59:10, Ed Schröder wrote:
>>
>>
>>>But in the end the human knows how to play chess. A computer will never
>>>find moves like Ra1 (Fischer) or Rxd4 (Kasparov) and and and... Ok, maybe
>>>in 100 years :-) Just try this (old and simple) one.
>>>
>>>5rk1/5p2/pr2pPp1/Pp1pP1Pp/1PpP3P/K1P5/8/8 w - - am a5b6;
>>
>>Doctor3 after 16 minutes and 42 seconds on p200MMX:
>>
>>Kb2 44/45 with evaluation -10.51
>>
>>Uri
>
>
>takes crafty on my PII/300 notebook 1:32 to find Kb2.  Takes my quad xeon
>about 12 seconds.  Here is PII/300 output:
>
>               18->  12.18  -8.14   1. axb6 Rb8 2. Kb2 Rxb6 3. Kc2 a5 4.
>                                    bxa5 Ra6 5. Kb2 Rxa5 6. Kb1 Ra3 7.
>                                    Kb2 b4 8. cxb4 Rd3 9. b5 Rxd4
>               19    18.89  -8.20   1. axb6 Rb8 2. Kb2 Rxb6 3. Kc2 a5 4.
>                                    bxa5 Ra6 5. Kb2 Rxa5 6. Kb1 Kf8 7.
>                                    Kb2 Ra4 8. Kb1 b4 9. cxb4 Rxb4+ 10.
>                                    Kc2 Ke8
>               19->  19.09  -8.20   1. axb6 Rb8 2. Kb2 Rxb6 3. Kc2 a5 4.
>                                    bxa5 Ra6 5. Kb2 Rxa5 6. Kb1 Kf8 7.
>                                    Kb2 Ra4 8. Kb1 b4 9. cxb4 Rxb4+ 10.
>                                    Kc2 Ke8
>               20    20.22     --   1. axb6
>               20    31.67  -9.25   1. axb6 Rb8 2. Kb2 Rxb6 3. Kc2 a5 4.
>                                    bxa5 Ra6 5. Kb2 Rxa5 6. Kb1 Ra3 7.
>                                    Kb2 b4 8. cxb4 Rh3 9. Kc2 Rxh4 10.
>                                    Kd2 Rxd4+ 11. Ke3
>               20     1:32  -8.62   1. Kb2 Rfb8 2. Kc2 Kf8 3. Kd2 Ke8 4.
>                                    Ke3 R6b7 5. Kd2 Ra8 6. Ke3 Kd7 7. Kf4
>                                    Rc8 8. Ke3 Kc6 9. Kf4 Rd7 10. Ke3 Rcc7
>               20->   1:32  -8.62   1. Kb2 Rfb8 2. Kc2 Kf8 3. Kd2 Ke8 4.
>                                    Ke3 R6b7 5. Kd2 Ra8 6. Ke3 Kd7 7. Kf4
>                                    Rc8 8. Ke3 Kc6 9. Kf4 Rd7 10. Ke3 Rcc7
>               21     2:32  -8.62   1. Kb2 Rfb8 2. Kc2 Kf8 3. Kd2 Ke8 4.
>                                    Ke3 R6b7 5. Kd2 Ra8 6. Ke3 Kd7 7. Kf4
>                                    Rbb8 8. Kg3 Re8 9. Kf4 Rad8 10. Ke3
>                                    Rc8 11. Kf4
>               21->   2:32  -8.62   1. Kb2 Rfb8 2. Kc2 Kf8 3. Kd2 Ke8 4.
>                                    Ke3 R6b7 5. Kd2 Ra8 6. Ke3 Kd7 7. Kf4
>                                    Rbb8 8. Kg3 Re8 9. Kf4 Rad8 10. Ke3
>                                    Rc8 11. Kf4

That's all nice of course but the score isn't 0.00 as it should be which
was my point of computers and understanding chess. Every 1500 player
sees it is a draw as long as you don't capture except computers.

A 100 years before computers will recognize this kind of positions as
a draw?

Ed Schroder

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