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Subject: Re: Question about hash tables

Author: Scott Gasch

Date: 15:15:54 10/19/99

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>
>Do we really need a 64 bit checksum?
>How much risk a 32 bit checksum would be, you think?
>

It's not a good solution.  I used to use 32 bit signatures and ran into at least
one illegal move pulled from the hash per game.  Usually more... they tend to
come in clumps.  This could just be a product of my own poor seeding but I
suspect that 32 bit signatures are just too short.

Since I increased this to 64 bits (actually I just added a second 32 bit key
computer with a different seed table) I have seen the illegal move from hash
once or twice... in weeks of play.

Scott



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