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Subject: Re: Yet again: Hashing and FINE 70

Author: Scott Gasch

Date: 14:38:17 12/18/00

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On December 18, 2000 at 15:03:36, José Antônio Fabiano Mendes wrote:
...
>
>  Or maybe this famous and beautiful pawn ending :
>  H.Mattison,1918  White to play and draw
>  [D]8/5p2/7k/6p1/5P1P/8/8/7K w
>  "Corresponding squares" to the rescue! JAFM

What is the solution?  My engine does not seem to find it in any reasonable
amount of time.  Unfortunately I do not have any endgame tables, though, so this
may take longer(?).  Here's my results:

...
27   -444   33.0    4426764   FL
27   -241   39.8    5468326   h4g5 h6h5 h1g2 h5g4 g2f1 g4f4 f1f2 f4g5 f2g3 f7f5
g3f3 f5f4 f3f2 [TT]
28   -303   40.5    5549429   FL
28   -200  134.5   18599366   h4g5 h6h5 g5g6 f7g6 f4f5 g6f5 h1g1 h5g4 g1g2 f5f4
g2f2 g4h4 f2f3 h4g5 f3f2 g5g4 f2g2 g4f5 g2f3 f5e5 f3f2 e5e6 f2f1 e6f5 f1g2 f5e4
g2f2 e4e5 [TT]
29   -251  136.3   18835230   FL
29   -217  224.0   31144660   h4g5 h6h5 g5g6 f7g6 f4f5 g6f5 h1g1 f5f4 g1f1 h5g4
f1f2 g4h4 f2f3 h4g5 f3f2 g5g4 f2g2 g4f5 g2f3 f5e5 f3f2 e5e6 f2e1 e6f5 [TT]

I failed low at every depth from 15-30 and never got a score anywhere near draw.
 What do others see in this position (with EGTB turned off)?

Scott




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