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Subject: Question about using Crafty to debug my program's perft

Author: Keith Evans

Date: 14:45:14 07/16/03

I'm not sure if this problem is with my understanding of Crafty, or maybe I have
a bad build of Crafty 19.3.

On a Linux box I compiled crafty for linux-elf and made sure to define TRACE.
(It looks to me like I want that based on looking at the code for OptionPerft.)

Then I run crafty (leaving the normal starting position) and type the following
commands:

trace 4
perft 4

I captured the output to a file, and edited out everything wasn't a move. I
ended up with 197,742 lines even though perft found the correct number (197,281)
of leaves. (Note if I try perft 1, 2, or 3 then everything comes out equal.)

I'm not sure why there are extra lines in there. (I piped it from sort into uniq
and didn't catch any duplicates.) My goal was to sort this list and then diff it
against the list of moves that my program generates.

Any ideas?

• First step towards a hardware chess engine? Marc Boulé 06:24:44 07/17/03
  • Re: First step towards a hardware chess engine? Keith Evans 08:10:53 07/17/03
• Re: Question about using Crafty to debug my program's perft Albert Bertilsson 23:26:19 07/16/03
  • Re: Question about using Crafty to debug my program's perft Keith Evans 08:19:41 07/17/03
  • Re: Question about using Crafty to debug my program's perft Andreas Herrmann 06:51:46 07/17/03
    • Re: Question about using Crafty to debug my program's perft Uri Blass 06:55:43 07/17/03
      • Re: Question about using Crafty to debug my program's perft Andreas Herrmann 07:04:50 07/17/03
  • Re: Question about using Crafty to debug my program's perft Uri Blass 00:57:27 07/17/03
• Re: Question about using Crafty to debug my program's perft Anthony Cozzie 15:32:40 07/16/03
  • Re: Question about using Crafty to debug my program's perft Keith Evans 17:24:42 07/16/03
• Re: Question about using Crafty to debug my program's perft Rick Bischoff 15:21:35 07/16/03
  • Re: Question about using Crafty to debug my program's perft Keith Evans 17:28:39 07/16/03
    • Thanks - this was easy to change Keith Evans 17:32:42 07/16/03
      • Re: Thanks - this was easy to change Robert Pope 09:31:35 07/17/03

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