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Subject: To Bob: Crafty, move ordering with SEE

Author: Alessandro Damiani

Date: 23:41:02 09/06/99

Hi Bob!

Some time back you wrote here on CCC about the move ordering of Crafty. I don't
want to download all archive files, so I ask you now.

If I remember it right, you use a SEE to order captures in the search. The
negative captures (SwapOff(.)<0) are placed after ALL the other moves?

I thought, the "state of the art" is:

1. transposition table move
2. positive captures (MVV/LVA)
3. killer 1
4. killer 2
5. counter move
6. rest of captures (MVV/LVA)
7. history moves
8. rest of moves (static ordering)

I define "positive capture" this way:
Val(aggressor)<Val(victim) OR NOT Attacked(opponent, move.to).

You said that the SEE gives you a better move ordering when the negative
captures are put after number 8?

Thank you!

Alessandro (new E-mail address since today: adamiani@econophone.ch)

• Re: To Bob: Crafty, move ordering with SEE Robert Hyatt 07:45:37 09/07/99
  • Re: To Bob: Crafty, move ordering with SEE Steve Maughan 09:17:56 09/09/99
    • Re: To Bob: Crafty, move ordering with SEE Robert Hyatt 10:05:23 09/09/99
      • Re: To Bob: Crafty, move ordering with SEE Steve Maughan 12:59:00 09/09/99
        • Re: To Bob: Crafty, move ordering with SEE Robert Hyatt 14:02:25 09/09/99
          • Re: To Bob: Thanks! Steve Maughan 00:46:19 09/10/99
  • Re: To Bob: Crafty, move ordering with SEE Bas Hamstra 17:58:15 09/08/99
    • Re: To Bob: Crafty, move ordering with SEE Robert Hyatt 19:14:51 09/08/99
• Re: To Bob: Crafty, move ordering with SEE Bruce Moreland 23:58:47 09/06/99
  • Re: To Bob: Crafty, move ordering with SEE Alessandro Damiani 00:48:31 09/07/99

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