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Subject: Re: thinking on opponent's time

Author: Will Singleton

Date: 23:24:21 02/11/99

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On February 12, 1999 at 01:13:44, Stuart Cracraft wrote:

>Fellow Chesspians,
>
>I am curious what your result was in implementing
>thinking on opponent's time in your programs.
>
>Any comments on what you saw in terms of performance/strength
>as a result of, if any, would be helpful.
>
>For example, how often did it guess the opponent's move?
>How much "free" time did it get with this feature?
>How much more strongly, if at all, do you think it played?
>
>Thanks,
>
>--Stuart
>
>P.S. Yes, I have already implemented it. No, I have not tested it
>in practical play against others.


It helps a lot, especially in blitz games.  If your guess is good, you can
choose to either move immediately, or calculate further.  Of course, both are
helpful depending on the situation.

Here's a quick example.  Amateur was playing today against Pharaon (Zchess) on
ICC.  It had guessed the move, and was on ply 7 when the opponent moved.  Time
was available, and it kept searching, failing low on ply 8, and then making a
better move.  However, the opponent chose that moment to disconnect, and then
immediately re-connected, resuming the game.  Amateur then had to recalculate
the move without the 5-10 second benefit of thinking on the opponent's time, and
never reached deep enough to get the fail low.  It made the bad move, and lost.

Will



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