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Subject: Re: Weird things with hash tables.

Author: Jeremiah Penery

Date: 21:44:28 02/24/99

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On February 25, 1999 at 00:27:58, Jeremiah Penery wrote:

>On February 24, 1999 at 23:55:26, James Robertson wrote:
>
>>On February 24, 1999 at 04:48:50, Ulrich Tuerke wrote:
>>
>>>
>>>On February 24, 1999 at 04:36:47, Ulrich Tuerke wrote:
>>>
>>>I use the 2 positions below to test correct work of my hash algos. You need
>>>correctly working hash to solve this. May be they are useful for you.
>>>
>>>8/k7/3p4/p2P1p2/P2P1P2/8/8/K7 w - - 0 1 id "HASH-01";c0 "Only Kb1! wins";
>>>8/1p5k/1P1p4/3p4/3Pp2p/2K1P2p/7P/8 w - - 0 1 id "HASH-02";c0 "Kb2! draws";
>>
>>I cannot solve either in a reasonable time with or without hash tables. :(
>>For the second position, I solve at ply 21 after more than a minute of thinking.
>>There is is probably some big bug in my search that doesn't have to do with hash
>>tables, as it seems that William Bryant was able to solve at ply 13. This is
>>distressing (not his success, but my failure). :(
>>
>>James

Solving at ply 21 isn't that bad...It's the time that's the problem.  Crafty
solves the second position at ply 18, but it only takes .17 seconds to do.
Unfortunately I could not test it with your program - when I try to test an EPD
file, Windows generates some kind of error. :(

Jeremiah



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