Author: Bernhard Bauer
Date: 05:01:24 03/26/99
Go up one level in this thread
On March 26, 1999 at 06:19:48, Harald Faber wrote:
>On March 26, 1999 at 05:38:52, Bernhard Bauer wrote:
>
>>>>>Instead of Kd6, h4 looks like it should win. Black will have to eventually
>>>>>play h6 or h5 but then white plays f6.
>>>
>>>8/p5pp/P7/4KP2/2k5/8/7P/8 w - - id Prog X - Prog Y; bm h2h4;
>>>h3 also wins but this is a good position to test computers to see if they avoid
>>>Kd6 and choose instead h4 or h3.
>>
>>It's often difficult to give only one *best* move for a certain position.
>>While I agree that h4 wins Ke6 instead of h4 should be considered too.
>>On a 2xPPro 232 MHz system crafty16.6 finds h4 at ply 12 within 9 sec whith
>>a score of 2.86. Crafty fails high within 10 sec and after 24 sec it returns a
>>score of 7.1 at ply 13. However, after 134 sec crafty fails high at ply 16 with
>>Ke6! At ply 19 the score is 16.6 and at ply 20 crafty fails high again. IMHO
>>Ke6! is even easier to see from a human perspective.
>>
>>Kind regards
>>B. Bauer
>>sc
>
>Can you give me the line please. At the moment I have only draw with Kd6 and
>Ke6: 44.Ke6 Kd4 45.Kc6 Ke5 46.Kb7 Kd6 with 47.Kxa7 Kc7 draw. Same motive with
>44.Kd6. Another idea 44.Ke6 Kd4 45.Kf7 Ke5 46.Kxg7 Kxf5 47.Kxh7 Kg4 48.Kg6 Kh3
>49.Kf5 Kxh2 50.Ke5 Kg3 51.Kd6 Kf4 52.Kc7 Ke5 53.Kb7 Kd6 and so on.
Here is the output from crafty:
19-> 15:10 16.60 1. Ke6 Kb5 2. Kf7 Kc4 3. h4 Kd4 4.
h5 Ke5 5. Kxg7 Kf4 6. f6 Kg5 7. f7
h6 8. f8=Q <HT>
The move h4 follows two moves later.
Hope that helps.
Kind regards
B. Bauer
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