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Subject: Re: Testposition (endgame pawns vs. bishop)

Author: Kolss

Date: 16:17:37 08/27/02

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On August 26, 2002 at 15:19:18, Eduard Nemeth wrote:

>[D]8/4k3/1P3pP1/3b1P1p/7P/3K4/8/8 b - - 0 1
>
>Black to move. What does your program play?
>
>Thank you,
>Eduard

Ikarus needs 20 seconds to find Kd7 for good on a rather outdated PIII-450MHz
with 128MB Hash and most important 5-men-TB. Here is the output (lines cut off
for better readability):

      19   18   +1.49  1. ... Bb7 2. Kc4 Bf3 3. Kc5 Be4 4. g7 Kf7 5. Kd6 Kxg7
      19   20 FailHigh 1. ... Kd7! 2. Kd4 Kd6 3. g7 Bb3 4. b7 Kc7 5. Kc5 Bg8
      19   21   +0.85  1. ... Kd7 2. Kd4 Kd6 3. g7 Bb3 4. b7 Kc7 5. Kc5 Bg8
      20   28   +1.06  1. ... Kd7 2. Kd4 Kd6 3. g7 Bb3 4. b7 Kc7 5. Kc5 Bg8
      21   36 FailHigh 1. ... Kd7! 2. Kd4 Kd6 3. g7 Bg8 4. b7 Kc7 5. Kc5 Kxb7
      21   42   +0.07  1. ... Kd7 2. Kd4 Kd6 3. g7 Bg8 4. b7 Kc7 5. Kc5 Kxb7
      22   51 FailLow  1. ... Kd7? 2. Kd4 Kd6 3. g7 Bg8 4. b7 Kc7 5. Kc5 Kxb7
      22   64   +0.42  1. ... Kd7 2. Kd4 Kd6 3. g7 Bg8 4. b7 Kc7 5. Kc5 Kxb7
      23   89   +0.42  1. ... Kd7 2. Kd4 Kd6 3. g7 Bg8 4. b7 Kc7 5. Kc5 Kxb7
      24  123 FailHigh 1. ... Kd7! 2. Kd4 Kd6 3. g7 Bg8 4. b7 Kc7 5. Kc5 Kxb7
      24  145   +0.08  1. ... Kd7 2. Kd4 Kd6 3. g7 Bg8 4. b7 Kc7 5. Kc5 Kxb7
      25  196   +0.08  1. ... Kd7 2. Kd4 Kd6 3. g7 Bg8 4. b7 Kc7 5. Kc5 Kxb7
      26  290   +0.08  1. ... Kd7 2. Kd4 Kd6 3. g7 Bg8 4. b7 Kc7 5. Kc5 Kxb7 6.
Kd6 Bh7 7. Ke6 Kc6 8. Kxf6 Kd7 9. Kg5 Ke7

Note that +0.08 (after 145 seconds) is (most probably) a TB-draw score (PP-B).

Best regards, Munjong.



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