Author: Christophe Theron
Date: 10:49:36 05/24/04
Go up one level in this thread
On May 24, 2004 at 07:27:19, Tord Romstad wrote:
>On May 24, 2004 at 07:12:09, Daniel Jackson wrote:
>
>>It would be interesting to see if Lang's program, an earlier ver. on a
>>standalone, e.g. Almira 68000 (1988) would come in under a second.
>
>Highly unlikely, I think. It appears to me that no version of Lang's
>programs before Genius 4 searched any lines deeper than the selective
>search depth displayed in the search output. I guess that Genius 4
>solves the position in less than a second (even on an old and slow
>computer like a 486), but that all older versions needs a long time
>to see the mate.
>
>Tord
Mmh... I think you are right, so my guess about the Mephisto Lyon must be wrong.
However I can say that the most recent versions of Genius display the same
behaviour and would not solve it if the mate is beyond the selective search
depth.
The exception is that if the side to move in the last position (the deepest) has
an obvious mate in 1, Genius would detect it and find the mate without seeing
the opponent's King actually mated.
I do not know if this is clear enough, but at least I understand myself. :)
Christophe
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