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Subject: Why using Zobrist keys for Pawn Hasing?

Author: Gerd Isenberg

Date: 05:22:40 12/05/01

About the pawn hash key discussions: Why using Zobrist keys for pawn hashing at
all, at least in BitBoard programs? Isn't it smarter to use a unique 46 Bit
(Rank2-7) Difference of two colored Pawn-BitBoards instead of zobrist keys for
pawns? No key collisions and key and index (key mod nEntries) calculation on the
fly.

Gerd

• Re: Why using Zobrist keys for Pawn Hasing? Vincent Diepeveen 01:42:05 12/06/01
  • Re: Why using Zobrist keys for Pawn Hasing? Gerd Isenberg 02:45:12 12/06/01
    • Re: Why using Zobrist keys for Pawn Hasing? Vincent Diepeveen 03:21:17 12/06/01
• Re: Why using Zobrist keys for Pawn Hasing? Bruce Moreland 12:41:12 12/05/01
  • Re: Why using Zobrist keys for Pawn Hasing? Ricardo Gibert 15:09:48 12/05/01
    • Re: Why using Zobrist keys for Pawn Hasing? Andrew Dados 19:41:48 12/05/01
      • Re: Why using Zobrist keys for Pawn Hasing? Vincent Diepeveen 01:37:55 12/06/01
        • Re: Why using Zobrist keys for Pawn Hasing? Ricardo Gibert 02:54:34 12/06/01
          • Re: Why using Zobrist keys for Pawn Hasing? Bruce Moreland 15:44:14 12/06/01
          • Re: Why using Zobrist keys for Pawn Hasing? Vincent Diepeveen 03:22:27 12/06/01
      • Re: Why using Zobrist keys for Pawn Hasing? Ricardo Gibert 22:51:58 12/05/01
• Re: Why using Zobrist keys for Pawn Hasing? Robert Hyatt 07:30:38 12/05/01
  • Re: Why using Zobrist keys for Pawn Hasing? Gerd Isenberg 09:45:54 12/05/01
    • Re: Why using Zobrist keys for Pawn Hasing? Robert Hyatt 10:57:44 12/05/01
  • Re: Why using Zobrist keys for Pawn Hasing? Ratko V Tomic 08:53:10 12/05/01
    • Re: Why using Zobrist keys for Pawn Hasing? Robert Hyatt 10:59:12 12/05/01
  • Re: Why using Zobrist keys for Pawn Hasing? Dieter Buerssner 08:26:11 12/05/01
    • Re: Why using Zobrist keys for Pawn Hasing? Dieter Buerssner 09:16:53 12/05/01
• Re: Why using Zobrist keys for Pawn Hasing? Daniel Clausen 06:46:52 12/05/01
• Re: Why using Zobrist keys for Pawn Hasing? Sune Fischer 05:56:30 12/05/01
  • Re: Why using Zobrist keys for Pawn Hashing? Gerd Isenberg 06:37:42 12/05/01
    • Re: Why using Zobrist keys for Pawn Hashing? Sune Fischer 06:56:44 12/05/01
      • Re: Why using Zobrist keys for Pawn Hashing? Gerd Isenberg 07:52:39 12/05/01
        • Re: Why using Zobrist keys for Pawn Hashing? Sune Fischer 08:02:23 12/05/01
• Why using Zobrist keys for Pawn Hashing? Gerd Isenberg 05:30:23 12/05/01

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