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Subject: General Tips and Tricks for debugging a search.

Author: Eric Oldre

Date: 13:36:54 06/15/05


I was wondering if anyone would like to volunteer any tricks they've
used to help find certain bugs in their search function.

I think that the ideas of using perft for move generation and
reversing the board to find bugs in the evaluation have both
been really useful to me. I was wondering if anyone has used
techniques similar to these to help find search bugs.

I understand that just because a engine can properly pass these
and other tests doesn't mean it's free of bugs. But they certainly
help detect at least some of them.

I'm certain that there must be plenty of bugs in Latista's search
and I think it's time for me to work on discovering them. If
you don't have any automated tricks like above. Does anyone
have any general advise to help me spot some bugs?

Eric Oldre

PS. I have at various spots in my program tried to follow a similar
model of asserts as in fruit. I'm sure taking some time to
do this at more parts of my program would help.

Re: General Tips and Tricks for debugging a search. Vincent Diepeveen 15:01:58 06/16/05
- Re: General Tips and Tricks for debugging a search. Daniel Shawul 22:52:45 06/16/05
  - Debugging a parallel search (LONG) Vincent Diepeveen 16:10:08 06/17/05
    - Thanks! n/t Daniel Shawul 22:39:56 06/17/05
The number one bug detection hint... Steven Edwards 14:43:39 06/16/05
CSS won't approve my message.......funny that....... Christopher Conkie 10:56:48 06/16/05
2 followup questions. Eric Oldre 09:09:57 06/16/05
- Re: 2 followup questions. J. Wesley Cleveland 17:41:06 06/16/05
- Re: 2 followup questions. Daniel Pineo 12:52:40 06/16/05
- Re: 2 followup questions. Daniel Pineo 12:23:03 06/16/05
- Re: 2 followup questions. Dann Corbit 10:22:12 06/16/05
  - Re: 2 followup questions. Eric Oldre 12:28:55 06/16/05
    - Re: 2 followup questions. Dann Corbit 13:22:29 06/16/05
      - That is definitely a great tool. thx for the link NT Mathieu Pagé 07:10:06 06/17/05
        
        Re: That is definitely a great tool. thx for the link NT Dann Corbit 10:38:00 06/17/05
Re: General Tips and Tricks for debugging a search. Daniel Mehrmannn 07:42:00 06/16/05
- Re: General Tips and Tricks for debugging a search. Christopher Conkie 10:38:30 06/16/05
  - Re: General Tips and Tricks for debugging a search. Andreas Guettinger 12:01:35 06/16/05
    - Re: General Tips and Tricks for debugging a search. Christopher Conkie 12:04:08 06/16/05
      - Re: General Tips and Tricks for debugging a search. Andreas Guettinger 12:47:57 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Christopher Conkie 16:35:30 06/16/05
Re: General Tips and Tricks for debugging a search. Christopher Conkie 04:09:21 06/16/05
- Re: General Tips and Tricks for debugging a search. Pallav Nawani 09:23:23 06/16/05
  - Re: General Tips and Tricks for debugging a search. Christopher Conkie 10:32:30 06/16/05
    - Re: General Tips and Tricks for debugging a search. Pallav Nawani 10:44:25 06/16/05
      - Re: General Tips and Tricks for debugging a search. Christopher Conkie 10:59:04 06/16/05
- Re: General Tips and Tricks for debugging a search. Reinhard Scharnagl 04:58:37 06/16/05
  - Re: General Tips and Tricks for debugging a search. Christopher Conkie 05:02:51 06/16/05
    - Re: General Tips and Tricks for debugging a search. Stan Arts 07:38:18 06/16/05
      - Re: General Tips and Tricks for debugging a search. Christopher Conkie 10:25:24 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Uri Blass 10:42:36 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Christopher Conkie 10:53:50 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Uri Blass 11:16:35 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Christopher Conkie 11:22:55 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Uri Blass 11:25:45 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Christopher Conkie 11:31:39 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Uri Blass 14:24:36 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Uri Blass 14:26:00 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Christopher Conkie 15:27:51 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Uri Blass 15:46:53 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Andreas Guettinger 23:56:57 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Christopher Conkie 16:12:37 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Dann Corbit 13:48:54 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Christopher Conkie 15:58:29 06/16/05
      - Re: General Tips and Tricks for debugging a search. Uri Blass 07:48:50 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Christopher Conkie 10:33:42 06/16/05
- Re: General Tips and Tricks for debugging a search. Madhavan 04:12:53 06/16/05
  - Re: General Tips and Tricks for debugging a search. Christopher Conkie 04:25:21 06/16/05
    - Re: General Tips and Tricks for debugging a search. Cesar Contreras 08:05:42 06/16/05
      - Re: General Tips and Tricks for debugging a search. Christopher Conkie 10:37:42 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Cesar Contreras 11:09:00 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Michael Diosi 11:15:32 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Cesar Contreras 12:49:22 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Michael Diosi 05:32:38 06/17/05
        
        Re: General Tips and Tricks for debugging a search. Uri Blass 11:22:57 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Michael Diosi 11:29:43 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Cesar Contreras 13:19:43 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Michael Diosi 23:57:42 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Cesar Contreras 05:32:44 06/17/05
        
        Re: General Tips and Tricks for debugging a search. Christopher Conkie 15:38:23 06/16/05
        
        Re: General Tips and Tricks for debugging a search. Cesar Contreras 16:51:53 06/16/05
    - Re: General Tips and Tricks for debugging a search. Uri Blass 04:45:50 06/16/05
      - Chessbase GUI implements chess rules for the engine........ Christopher Conkie 04:54:18 06/16/05
        
        Re: Chessbase GUI implements chess rules for the engine........ Uri Blass 05:12:15 06/16/05
        
        Re: Chessbase GUI implements chess rules for the engine........ Christopher Conkie 05:22:43 06/16/05
        
        Re: Chessbase GUI implements chess rules for the engine........ Uri Blass 05:57:47 06/16/05
        
        Re: Chessbase GUI implements chess rules for the engine........ Christopher Conkie 06:17:22 06/16/05
        
        Re: Chessbase GUI implements chess rules for the engine........ Uri Blass 06:34:04 06/16/05
        
        Re: Chessbase GUI implements chess rules for the engine........ Christopher Conkie 06:38:51 06/16/05
        
        Re: Chessbase GUI implements chess rules for the engine........ Uri Blass 06:45:35 06/16/05
        
        Re: Chessbase GUI implements chess rules for the engine........ Christopher Conkie 06:52:41 06/16/05
        
        Re: Chessbase GUI implements chess rules for the engine........ Uri Blass 07:02:34 06/16/05
        
        Re: Chessbase GUI implements chess rules for the engine........ Christopher Conkie 07:16:06 06/16/05
        
        Re: Chessbase GUI implements chess rules for the engine........ Uri Blass 07:27:57 06/16/05
        
        Re: Chessbase GUI implements chess rules for the engine........ Christopher Conkie 07:33:00 06/16/05
        
        Re: Chessbase GUI implements chess rules for the engine........ Uri Blass 07:42:20 06/16/05
        
        Re: Wrong math?. Torstein Hall 02:29:15 06/17/05
        
        Re: Wrong math?. Uri Blass 03:06:25 06/17/05
        
        Re: Wrong math?. Christopher Conkie 04:35:48 06/17/05
        
        Re: Chessbase GUI implements chess rules for the engine........ Christopher Conkie 11:59:55 06/16/05
        
        Re: Chessbase GUI implements chess rules for the engine........ Christopher Conkie 06:21:55 06/16/05
    - Re: General Tips and Tricks for debugging a search. Madhavan 04:32:56 06/16/05
      - Let the programmers answer....not you n/t Christopher Conkie 04:34:41 06/16/05
Re: General Tips and Tricks for debugging a search. Vasik Rajlich 02:26:11 06/16/05
- Re: General Tips and Tricks for debugging a search. Eric Oldre 08:44:08 06/16/05
Re: General Tips and Tricks for debugging a search. Ed Schröder 00:50:17 06/16/05
- Re: General Tips and Tricks for debugging a search. Vincent Diepeveen 15:14:49 06/16/05
- Re: General Tips and Tricks for debugging a search. Volker Böhm 09:45:46 06/16/05
Re: General Tips and Tricks for debugging a search. Gerd Isenberg 00:11:35 06/16/05
Re: General Tips and Tricks for debugging a search. Daniel Shawul 23:14:04 06/15/05
Re: General Tips and Tricks for debugging a search. Pallav Nawani 16:57:22 06/15/05
Re: General Tips and Tricks for debugging a search. Reinhard Scharnagl 16:30:52 06/15/05
Re: General Tips and Tricks for debugging a search. Dann Corbit 16:07:27 06/15/05
- Re: General Tips and Tricks for debugging a search. Ross Boyd 21:53:38 06/15/05
  - Re: General Tips and Tricks for debugging (correction) Ross Boyd 21:57:06 06/15/05

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