Computer Chess Club Archives




Subject: Re: Is pondering unfair in engine matches on a PC?

Author: Leen Ammeraal

Date: 04:51:15 02/20/01

Go up one level in this thread

On February 19, 2001 at 15:09:21, William H Rogers wrote:

>On February 19, 2001 at 14:18:15, Leen Ammeraal wrote:
>>On February 19, 2001 at 14:04:44, Mogens Larsen wrote:
>>>On February 19, 2001 at 13:07:27, Leen Ammeraal wrote:
>>>>Does that mean that, with pondering on, my program, which currently does not
>>>>implement pondering, get less computer time than its opponent if the
>>>>latter implements pondering?
>>>Not necessarily. It's possible to switch off pondering with most programs.
>>Yes, I know. That is why I had written "with pondering on" in my
>>question above. If other people use my program in a match
>>against others, the chances are that they will play with
>>pondering on, with a big disadvantage for my program because
>>it cannot ponder. So I am afraid, I cannot afford NOT implementing
>>pondering, only so far I don't have a clue how to begin.
>>Any help would be very welcome.
>First take the best move that your program decided was best for the opponent,
>then after you make your move, switch sides and make you opponents best move and
>then calculate your possible reply to it. You must watch the keyboard for input
>so that you will know when to stop. After the opponent has made his move, you
>then compare it to the move that you guessed he would make, if it is the same
>one then you can continue you depth, if not, then you start your normal search.
>I hope that this makes sense, if not I'll try again.

Thanks. There is one difficulty for me in what you are writing: how can I
'watch the keyboard for input'? I use mainly VC++ (and sometimes gcc).

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