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Subject: Re: Extensions?!

Author: Mike Byrne

Date: 08:31:08 01/14/98

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On January 14, 1998 at 08:49:27, Dan Homan wrote:

>On January 13, 1998 at 14:43:16, Robert Hyatt wrote:
>
>>On January 13, 1998 at 09:08:49, Dan Homan wrote:
>>>
>>>p.s. My program does
>>>
>>>capture extensions    (4/10 of a ply)
>>
>>dangerous one there.  Ken Thompson used 1/2 ply in 1983, and probably
>>lost the 1983 World Championship as a result of doing this.  He reported
>>it helped his WAC results quite a bit, but it costs about 1/2 to 1 ply.
>>He later discarded it totally.
>>
>>
>>>re-capture extensions (1 ply)
>>>check extensions      (1 ply)
>>>pawn push extensions  (1/2 ply or 1/3 ply)  (endgame and late
>>>middle-game)
>>>bruce's mate ext.     (1 ply)
>>

what is "bruce's mate ext.     (1 ply)" ?



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