Author: Danniel Corbit
Date: 19:08:50 08/13/98
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160 bits is an important threshhold, since that is exactly 5 32 bit chunks. I would not be disappointed by 6 [which actually works nicely for 64 bits]. So 192 bits is OK by me. Shrinking by even 64 bits is only a savings of 1/3, which is a small constant factor. I would want to be able to reconstruct the position as quickly as possible also. A very interesting approach [vastly different from EPD -- more like a compressed PGN] is the PIG format for Amiga. The writer of that product enumerates the legal postions possible, and then picks the index of the move chosen. So only one byte is needed for each move. You obviously have to reconstruct a lot of stuff as you go through a game, but what a tremendous compression!
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