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Subject: Re: an idea to test positional understanding of chess programs.

Author: blass uri

Date: 14:54:52 05/24/99

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On May 24, 1999 at 17:38:52, KarinsDad wrote:

>On May 24, 1999 at 17:05:04, blass uri wrote:
>
>>
>>I agree that a better implementation can also help, but the main point is that
>>the take back can help in cases of tactical mistakes that you understand after a
>>small number of moves that you are in trouble.
>>
>>If the position of one program (with better positional understanding) is going
>>to improve slowly then the opponent will have no idea when it went wrong so the
>>take back is not going to help it.
>>
>>Uri
>
>Does this mean that the takeback will be limited to one ply at a given time?
>
>If so, then that may not be enough to undo a tactical problem (i.e. it takes 14
>ply to see the flaw, but the program only looked 10 ply).
>
>If not, then it may be possible to take back to the point of minimizing the
>positional advantage (i.e. the program searches for any way to avoid the trap it
>walked into, even going back 4 moves).


It is not going to be linited to 1 ply but it is going to be limited because the
program is losing 5 minutes for every move that it take back to the opponent so
if it take back 40 moves then it is going to lose 5*40=200 minutes and this say
losing on time.

If a program does many tactical mistakes then it is going to lose but if a
program is a better positional player and does one  tactical mistake for 40
moves then the take back is going to help it.

Uri

>
>This is hard to evaluate.
>
>KarinsDad :)



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