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Subject: For those who what to see the difference: " legal", "illegal" moves.

Author: leonid

Date: 11:05:01 11/28/99


Hi,

For those who spoke about the difference between "legal", "illegal" moves based
logic. Question was: What logic will be more rapid? After my trial, legal moves
based logic do the best. Difference insignificant and is around 4%.

What exactly was changed and where?

1) Before only ply zero had illegal moves based logic. All other plys used legal
moves logics.

2) Were changed three plys over ply zero to see the difference.

3) Tryed both logics for speed 8 plys deep, brute force, same positions. No
extensions.

4) In illegal moves based logic all old alignment procedures are the same.  For
instance, procedure that put "checking moves" at the head of moves line. This
last procedure is as much big and time consuming, as the procedure that before
watched for legality of all moves in a ply.

Leonid.



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