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Subject: A different idea to compress tablebases

Author: blass uri

Date: 03:50:37 10/10/98


I think that you can compress distance to conversion to distance in number of
mistakes
The idea is that often the computer can find the right move by evaluation
function and if it is the case then you do not need the tablebases.

You have to save for a position only the maximal number of times that you will
need the tablebases in the future
If you can decrease this number by 2 plies search then it is a proof that the
evaluation function cannot help and you use the tables.
If you cannot decrease this number by 2 plies search then you can use the
evaluation function to play the right move.

The problem with this idea is that I do not see how to compress it more by
division by 2 .

It is a good idea only if  the static evaluation function(or the evaluation
after a very smalll search) of the program does not do a lot of mistakes.

It is better to use the evaluation after search of a second per position but you
need a lot of time to generate hash tables in this way and you have not many
years to generate the hash tables.

Uri



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