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Subject: Re: EGTBs

Author: James Robertson

Date: 15:05:00 09/04/99

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On September 04, 1999 at 16:10:24, Frank Phillips wrote:

>On September 04, 1999 at 11:58:02, James Swafford wrote:
>
>>Are you sure you're ordering the squares the right way?
>>
>>For example, in my engine, A8=0, H8=7 .... H1 = 63.
>>In Eugene's code, H1 = 0 ... A8 = 63, so I had to do
>>an inversion before placing squares in the list.
>>
>>Before I caught this, my program was screwing up simple
>>three man mates.  Talk about frustrating. :-)
>>
>>--
>Yes,  thanks.  I usually do such stupid things, but this time round I wrote the
>program so that A1==0 with Eugene's EGTB's in mind!
>
>
>Frank

How about extensions? I found that if my program triggered an extension at ply
1, it would (assuming the position is a win for the side to move) have only 1
move that would return a mate value, and would abort the search after 1 ply of
searching even if there was a faster mate that could be found at ply 2 through a
non-checking move.

James



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