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Subject: Re: Yet again: Hashing and FINE 70

Author: José Antônio Fabiano Mendes

Date: 12:03:36 12/18/00

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On December 18, 2000 at 12:52:43, Bruce Moreland wrote:

>On December 18, 2000 at 10:51:59, Bernhard Bauer wrote:
>
>>On December 18, 2000 at 07:08:38, Tim Foden wrote:
>>
>>>Hi All,
>>>
>>>I have recently been looking at lots of old posts (I've been mucking around
>>>with my own archive browser with better search functionality), and I keep
>>>coming across the FINE 70 position as a good test for a hash implementation.
>>>
>>>I have been worried about the hash code in GLC for a while now, but I haven't
>>>been able to track anything down that is wrong.  I'm not sure there _is_
>>>even anything wrong.
>>>
>>>Are there any other (simpler... where I can dump the tree an look at it
>>>myself) positions that also test the hash table in this way?
>>>
>>
>>You may try
>>F. Sackmann, matt in 25 Zuegen, 1.Kf5
>>8/8/2p/k1p1K/p1P/P/8/8 w
>>J. Awerbach
>>8/1k/p/p2p2K/P2P/8/8/8 w
>
>I think the above is cooked, both Kf5 and Kf6 seem to win.
>
>>J. Awerbach
>>6k/3p/3p/3P/4P1p/6P/8/K w
>
>I can't find a really convincing win quickly here.
>
>bruce
>
>>These 3 positions are very similar fine70 as they are solved by the
>>method of coresponding squares.
>>
>>Kind regards
>>Bernhard

  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




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