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Subject: The need to unmake move

Author: Mathieu Pagé

Date: 17:06:58 08/19/03

Hi,

The fact:

I have this question i read at some place that it is faster to unmake a move
than to save the state of the game before moving then restoring it when we want
to unmake the move.

For the moment my engines did not implement unmake() (it is still buggy).

My thougth:

Since bitboard computation are slow (on 32 hardware) i think that it can be
slower to unmake the move than to save the state. I friend of me that is lot
better than me at optimizing code also think that.

My questions:

Are you all using unmake() function or there is some of you that found that
saving the state is better ?

In the case that unmake is better. by wich factor ?

Thanks for your help.

Mathieu Pagé

Re: The need to unmake move Frank Phillips 12:02:10 08/20/03
Re: The need to unmake move Angrim 09:43:39 08/20/03
Thanks for all the reply. I'll give it a try. NT Mathieu Pagé 06:20:05 08/20/03
Re: The need to unmake move Robert Hyatt 19:11:14 08/19/03
- Re: The need to unmake move Omid David Tabibi 02:28:59 08/20/03
  - Re: The need to unmake move Bo Persson 03:15:14 08/20/03
    - Re: The need to unmake move Sune Fischer 16:45:52 08/20/03
      - Re: The need to unmake move Bo Persson 02:54:53 08/21/03
        
        Re: The need to unmake move Robert Hyatt 08:31:08 08/21/03
        
        Re: The need to unmake move Sune Fischer 13:24:08 08/22/03
        
        Re: The need to unmake move Robert Hyatt 18:53:55 08/24/03
        
        Re: The need to unmake move Sune Fischer 02:25:35 08/25/03
        
        Re: The need to unmake move Robert Hyatt 10:44:13 08/25/03
        
        Re: The need to unmake move Sune Fischer 11:25:17 08/25/03
        
        Re: The need to unmake move Robert Hyatt 11:53:46 08/25/03
        
        Re: The need to unmake move Sune Fischer 12:11:57 08/25/03
        
        Re: The need to unmake move Robert Hyatt 14:25:13 08/25/03
        
        Re: The need to unmake move Dan Andersson 12:34:38 08/25/03
        
        Re: The need to unmake move Sune Fischer 13:10:42 08/25/03
        
        Re: The need to unmake move Dan Andersson 13:17:34 08/25/03
        
        Re: The need to unmake move Sune Fischer 13:28:31 08/25/03
        
        Re: The need to unmake move Robert Hyatt 14:28:33 08/25/03
        
        Re: The need to unmake move Sune Fischer 14:36:22 08/25/03
        
        Re: The need to unmake move Robert Hyatt 15:04:29 08/25/03
        
        Re: The need to unmake move Johan de Koning 00:00:52 08/26/03
        
        Re: The need to unmake move Robert Hyatt 08:42:03 08/26/03
        
        Re: The need to unmake move Johan de Koning 18:21:32 08/26/03
        
        Re: The need to unmake move Robert Hyatt 21:34:07 08/27/03
        
        Re: The need to unmake move Jeremiah Penery 15:38:34 08/26/03
        
        Re: The need to unmake move Robert Hyatt 14:17:39 08/27/03
        
        Re: The need to unmake move Jeremiah Penery 15:31:30 08/27/03
        
        Re: The need to unmake move Robert Hyatt 16:45:43 08/27/03
        
        Re: The need to unmake move Jeremiah Penery 22:00:22 08/27/03
        
        Re: The need to unmake move Robert Hyatt 08:39:51 08/28/03
        
        Re: The need to unmake move Jeremiah Penery 16:12:52 08/28/03
        
        Re: The need to unmake move Robert Hyatt 05:46:12 08/29/03
        
        Re: The need to unmake move Jeremiah Penery 15:32:46 08/29/03
        
        Re: The need to unmake move Robert Hyatt 20:39:13 09/01/03
        
        Re: The need to unmake move Jeremiah Penery 21:02:34 09/01/03
        
        Re: The need to unmake move Robert Hyatt 08:06:18 09/02/03
        
        Re: The need to unmake move Jeremiah Penery 15:22:25 09/02/03
        
        Re: The need to unmake move Robert Hyatt 19:50:21 09/02/03
        
        Re: The need to unmake move Jeremiah Penery 21:12:46 09/02/03
        
        Re: The need to unmake move Robert Hyatt 09:06:46 09/03/03
        
        Re: The need to unmake move Robert Hyatt 20:40:19 09/01/03
        
        Re: The need to unmake move Eugene Nalimov 15:40:51 08/29/03
        
        Re: The need to unmake move Jeremiah Penery 16:56:34 08/29/03
        
        Re: The need to unmake move Robert Hyatt 20:53:20 09/01/03
        
        Re: The need to unmake move Vincent Diepeveen 07:38:05 09/03/03
        
        Re: The need to unmake move Robert Hyatt 09:08:03 09/03/03
        
        Re: The need to unmake move Jeremiah Penery 20:58:38 09/01/03
        
        Re: The need to unmake move Robert Hyatt 08:09:21 09/02/03
        
        Re: The need to unmake move Tony Werten 23:53:36 09/02/03
        
        Re: The need to unmake move Robert Hyatt 09:09:12 09/03/03
        
        Re: The need to unmake move Vincent Diepeveen 07:39:41 09/03/03
        
        Re: The need to unmake move Jeremiah Penery 15:18:15 09/02/03
        
        Re: The need to unmake move Robert Hyatt 19:54:49 09/02/03
        
        Re: The need to unmake move Jeremiah Penery 21:07:37 09/02/03
        
        Re: The need to unmake move Robert Hyatt 10:06:34 09/03/03
        
        Re: The need to unmake move Jeremiah Penery 15:57:06 09/03/03
        
        Re: The need to unmake move Robert Hyatt 16:57:23 09/03/03
        
        Re: The need to unmake move Matthew Hull 20:56:50 09/03/03
        
        Re: The need to unmake move Robert Hyatt 07:58:34 09/04/03
        
        Re: The need to unmake move Vincent Diepeveen 07:45:40 09/03/03
        
        Re: The need to unmake move Jeremiah Penery 15:51:31 09/03/03
        
        Re: The need to unmake move Matthew Hull 06:02:28 09/03/03
        
        Re: The need to unmake move Robert Hyatt 10:08:34 09/03/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 10:42:12 09/03/03
        
        Re: The need to unmake move Robert Hyatt 10:48:21 09/03/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 10:51:34 09/03/03
        
        Re: The need to unmake move Robert Hyatt 10:59:40 09/03/03
        
        Re: The need to unmake move Anthony Cozzie 06:56:21 09/04/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 12:08:12 09/04/03
        
        Re: The need to unmake move Anthony Cozzie 14:13:42 09/04/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 15:13:45 09/04/03
        
        Re: The need to unmake move Anthony Cozzie 15:33:01 09/04/03
        
        Re: The need to unmake move Robert Hyatt 08:00:41 09/04/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 12:37:37 09/04/03
        
        Re: The need to unmake move Robert Hyatt 14:10:26 09/04/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 15:01:14 09/04/03
        
        Re: The need to unmake move Robert Hyatt 14:26:58 09/05/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 02:28:39 09/06/03
        
        Re: The need to unmake move Robert Hyatt 12:56:38 09/06/03
        
        Re: The need to unmake move Tony Werten 01:40:26 09/06/03
        
        Re: The need to unmake move Robert Hyatt 13:02:46 09/06/03
        
        Re: The need to unmake move Uri Blass 08:20:45 09/04/03
        
        Re: The need to unmake move Robert Hyatt 12:14:47 09/04/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 06:06:39 09/03/03
        
        Re: The need to unmake move Robert Hyatt 10:10:23 09/03/03
        
        Re: The need to unmake move Sune Fischer 06:56:32 09/03/03
        
        Re: The need to unmake move Robert Hyatt 10:11:02 09/03/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 07:05:05 09/03/03
        
        Re: The need to unmake move Robert Hyatt 10:11:40 09/03/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 10:38:30 09/03/03
        
        Re: The need to unmake move Robert Hyatt 10:53:46 09/03/03
        
        Re: The need to unmake move Sune Fischer 07:10:53 09/03/03
        
        Re: The need to unmake move Robert Hyatt 10:12:47 09/03/03
        
        Re: The need to unmake move Sune Fischer 10:20:38 09/03/03
        
        Re: The need to unmake move Robert Hyatt 10:54:08 09/03/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 07:13:30 09/03/03
        
        Re: The need to unmake move Sune Fischer 07:19:41 09/03/03
        
        Re: The need to unmake move Vincent Diepeveen 07:48:31 09/03/03
        
        Re: The need to unmake move Robert Hyatt 10:13:46 09/03/03
        
        Re: The need to unmake move Sune Fischer 07:54:37 09/03/03
        
        Re: The need to unmake move Vincent Diepeveen 09:23:08 09/03/03
        
        Re: The need to unmake move Robert Hyatt 10:15:48 09/03/03
        
        Re: The need to unmake move Vincent Diepeveen 12:27:15 09/03/03
        
        Re: The need to unmake move Robert Hyatt 13:28:18 09/03/03
        
        Re: The need to unmake move Vincent Diepeveen 17:20:05 09/03/03
        
        Re: The need to unmake move Robert Hyatt 08:04:00 09/04/03
        
        one more thing on cc-NUMA and linux Vincent Diepeveen 17:31:55 09/03/03
        
        Re: one more thing on cc-NUMA and linux Robert Hyatt 08:08:28 09/04/03
        
        Linux problem at cc-NUMA machines Vincent Diepeveen 05:51:44 09/05/03
        
        Re: Linux problem at cc-NUMA machines Robert Hyatt 14:40:54 09/05/03
        
        Re: one more thing on cc-NUMA and linux Gian-Carlo Pascutto 11:58:52 09/04/03
        
        Re: one more thing on cc-NUMA and linux Robert Hyatt 14:12:07 09/04/03
        
        Re: one more thing on cc-NUMA and linux Gian-Carlo Pascutto 14:16:21 09/04/03
        
        Re: The need to unmake move Sune Fischer 09:34:53 09/03/03
        
        Re: The need to unmake move Vincent Diepeveen 09:45:40 09/03/03
        
        Re: The need to unmake move Robert Hyatt 10:17:40 09/03/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 10:36:51 09/03/03
        
        Re: The need to unmake move Sune Fischer 10:51:30 09/03/03
        
        Re: The need to unmake move Robert Hyatt 11:02:44 09/03/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 11:20:51 09/03/03
        
        Re: The need to unmake move Robert Hyatt 12:03:00 09/03/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 07:22:13 09/03/03
        
        Re: The need to unmake move Sune Fischer 07:26:19 09/03/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 07:35:11 09/03/03
        
        Re: The need to unmake move Robert Hyatt 10:18:49 09/03/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 10:30:26 09/03/03
        
        Re: The need to unmake move Robert Hyatt 11:05:27 09/03/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 11:11:24 09/03/03
        
        Re: The need to unmake move Robert Hyatt 11:15:01 09/03/03
        
        Re: The need to unmake move Sune Fischer 07:44:11 09/03/03
        
        Re: The need to unmake move Tony Werten 01:54:53 09/04/03
        
        Re: The need to unmake move Robert Hyatt 08:10:36 09/04/03
        
        Re: The need to unmake move Tony Werten 00:41:08 09/05/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 07:54:07 09/03/03
        
        Re: The need to unmake move Vincent Diepeveen 07:51:56 09/03/03
        
        Re: The need to unmake move Robert Hyatt 10:21:27 09/03/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 10:35:36 09/03/03
        
        Re: The need to unmake move Robert Hyatt 11:06:50 09/03/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 11:08:13 09/03/03
        
        Re: The need to unmake move Robert Hyatt 11:13:10 09/03/03
        
        Re: The need to unmake move Sune Fischer 07:57:17 09/03/03
        
        Re: The need to unmake move Vincent Diepeveen 09:30:37 09/03/03
        
        Re: The need to unmake move Matthew Hull 07:18:38 09/03/03
        
        Re: The need to unmake move Robert Hyatt 10:22:50 09/03/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 10:33:19 09/03/03
        
        Re: The need to unmake move Robert Hyatt 11:10:53 09/03/03
        
        Re: The need to unmake move Vincent Diepeveen 12:35:01 09/03/03
        
        Re: The need to unmake move Robert Hyatt 13:44:10 09/03/03
        
        Re: The need to unmake move Vincent Diepeveen 04:04:33 09/04/03
        
        Re: The need to unmake move Robert Hyatt 08:12:40 09/04/03
        
        Re: The need to unmake move Vincent Diepeveen 07:54:12 09/03/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 07:20:45 09/03/03
        
        Re: The need to unmake move Gian-Carlo Pascutto 04:17:58 09/02/03
        
        Re: The need to unmake move Robert Hyatt 08:13:12 09/02/03
        
        Re: The need to unmake move Eugene Nalimov 19:19:59 08/29/03
        
        Re: The need to unmake move Jeremiah Penery 20:18:43 08/29/03
        
        Re: The need to unmake move Eugene Nalimov 20:45:44 08/29/03
        
        Re: The need to unmake move Jeremiah Penery 22:45:53 08/29/03
        
        Re: The need to unmake move Vincent Diepeveen 13:53:47 08/30/03
        
        Re: The need to unmake move Dan Andersson 16:07:04 08/27/03
        
        Re: The need to unmake move Jeremiah Penery 21:55:49 08/27/03
        
        Re: The need to unmake move Sune Fischer 15:14:15 08/25/03
        
        Re: The need to unmake move Robert Hyatt 15:28:24 08/25/03
        
        Re: The need to unmake move Uri Blass 00:41:21 08/26/03
        
        Re: The need to unmake move Robert Hyatt 08:38:50 08/26/03
        
        Re: The need to unmake move Johan de Koning 00:13:00 08/26/03
        
        Re: The need to unmake move Robert Hyatt 08:40:22 08/26/03
        
        Re: The need to unmake move Johan de Koning 18:12:45 08/26/03
        
        Re: The need to unmake move Robert Hyatt 09:25:51 08/27/03
        
        Full circle Johan de Koning 22:50:46 08/27/03
        
        Re: Full circle Robert Hyatt 08:45:35 08/28/03
        
        Re: Full circle Vincent Diepeveen 09:25:23 08/29/03
        
        Re: Full circle Robert Hyatt 20:43:30 09/01/03
        
        Re: Full circle Dezhi Zhao 05:49:09 08/29/03
        
        Re: Full circle Robert Hyatt 20:44:05 09/01/03
        
        Re: Full circle Vincent Diepeveen 09:36:28 08/29/03
        
        Re: Full circle Dezhi Zhao 10:44:03 08/29/03
        
        Re: Full circle Vincent Diepeveen 11:55:09 08/29/03
        
        Re: Full circle Dezhi Zhao 11:59:56 08/29/03
        
        Re: Full circle Johan de Koning 23:34:42 08/28/03
        
        Re: Full circle Robert Hyatt 05:53:50 08/29/03
        
        Re: Full circle Johan de Koning 23:58:53 08/29/03
        
        Re: Full circle Vincent Diepeveen 07:36:53 08/30/03
        
        Re: Full circle Robert Hyatt 20:35:51 09/01/03
        
        Re: Full circle Dave Gomboc 15:26:46 08/29/03
        
        Re: Full circle Robert Hyatt 20:45:45 09/01/03
        
        Re: Full circle Uri Blass 21:26:00 09/01/03
        
        Re: Full circle Robert Hyatt 08:20:19 09/02/03
        
        Re: Full circle Vincent Diepeveen 16:45:33 08/29/03
        
        Re: Full circle Robert Hyatt 20:46:43 09/01/03
        
        Re: Full circle Vincent Diepeveen 09:46:04 08/29/03
        
        Re: Full circle Robert Hyatt 20:50:09 09/01/03
        
        Re: Full circle Vincent Diepeveen 14:24:58 09/02/03
        
        Re: Full circle Robert Hyatt 19:56:43 09/02/03
        
        Re: Full circle Vincent Diepeveen 06:29:52 09/03/03
        
        Re: Full circle Robert Hyatt 10:24:39 09/03/03
        
        NUMA Crafty soon? Matthew Hull 20:56:01 09/01/03
        
        Re: NUMA Crafty soon? Robert Hyatt 08:22:12 09/02/03
        
        Re: Full circle Joost Buijs 14:47:44 08/29/03
        
        Re: The need to unmake move Dan Andersson 13:50:08 08/25/03
        
        Re: The need to unmake move Sune Fischer 14:22:52 08/25/03
        
        Re: The need to unmake move Robert Hyatt 14:35:09 08/25/03
        
        Re: The need to unmake move Sune Fischer 15:00:49 08/25/03
        
        Re: The need to unmake move Robert Hyatt 15:11:28 08/25/03
- Re: The need to unmake move Johan de Koning 00:59:38 08/20/03
  - Re: The need to unmake move Robert Hyatt 11:27:57 08/20/03
    - Re: The need to unmake move Johan de Koning 00:16:35 08/21/03
      - Re: The need to unmake move Robert Hyatt 08:29:49 08/21/03
        
        Re: The need to unmake move Johan de Koning 23:53:06 08/21/03
        
        Re: The need to unmake move Robert Hyatt 07:45:11 08/22/03
        
        Re: copy cost Johan de Koning 00:45:09 08/23/03
        
        Re: copy cost Robert Hyatt 18:50:28 08/24/03
        
        Re: copy cost Angrim 10:49:46 08/25/03
        
        Re: copy cost Robert Hyatt 11:54:33 08/25/03
        
        Re: copy cost Johan de Koning 23:56:40 08/24/03
        
        Re: copy cost Robert Hyatt 08:32:10 08/25/03
        
        Re: copy cost Johan de Koning 18:23:58 08/25/03
        
        Re: copy cost Johan de Koning 01:21:28 08/23/03
        
        Re: copy cost Gerd Isenberg 06:40:45 08/23/03
        
        Re: copy cost Johan de Koning 23:13:33 08/23/03
        
        Re: copy cost Gerd Isenberg 23:52:26 08/23/03
        
        Cool docs Johan de Koning 00:31:41 08/26/03
        
        Re: Cool docs Gerd Isenberg 14:15:43 08/26/03
        
        Re: Cool docs Johan de Koning 18:28:08 08/26/03
        
        Re: Are you the "JOHAN DE "chessmaster"KONING? NT Rajen Gupta 12:46:14 08/27/03
        
        Re: Were you linking Tasc and Chessmaster back in 1997? (smiley inside) Johan de Koning 23:00:18 08/27/03
        
        Re: copy cost Christophe Theron 11:13:48 08/23/03
        
        Re: copy cost Dieter Buerssner 12:44:37 08/23/03
        
        Re: copy cost Christophe Theron 20:54:46 08/23/03
        
        Re: copy cost Gerd Isenberg 00:04:16 08/24/03
        
        Re: copy cost Christophe Theron 09:49:42 08/24/03
        
        Re: copy cost Gerd Isenberg 12:42:12 08/23/03
        
        Re: The need to unmake move Johan de Koning 23:34:05 08/22/03
        
        Re: The need to unmake move Robert Hyatt 18:52:37 08/24/03
        
        Re: The need to unmake move Johan de Koning 22:57:36 08/24/03
        
        Re: The need to unmake move Robert Hyatt 08:34:23 08/25/03
        
        Re: The need to unmake move Johan de Koning 19:01:59 08/25/03
        
        Re: The need to unmake move Bo Persson 04:38:01 08/22/03
  - Re: The need to unmake move Eugene Nalimov 10:30:02 08/20/03
    - Re: The need to unmake move Gerd Isenberg 12:15:22 08/20/03
  - Re: The need to unmake move Christophe Theron 10:05:17 08/20/03
    - Re: The need to unmake move Johan de Koning 23:29:48 08/20/03
    - Re: The need to unmake move Robert Hyatt 11:30:47 08/20/03
      - Re: The need to unmake move Christophe Theron 17:00:12 08/20/03
        
        Re: The need to unmake move Robert Hyatt 08:33:08 08/21/03
        
        Re: The need to unmake move Uri Blass 01:52:06 08/21/03
        
        Re: The need to unmake move Uri Blass 02:16:17 08/21/03
        
        Re: The need to unmake move Daniel Clausen 02:40:41 08/21/03
        
        Re: The need to unmake move Uri Blass 03:08:54 08/21/03
    - Re: The need to unmake move Sune Fischer 10:36:59 08/20/03
      - Re: The need to unmake move Christophe Theron 16:51:15 08/20/03
        
        Re: The need to unmake move Sune Fischer 17:06:33 08/20/03
    - Re: The need to unmake move Dieter Buerssner 10:11:49 08/20/03
      - Re: The need to unmake move Christophe Theron 16:49:56 08/20/03
Re: The need to unmake move Dan Andersson 17:28:11 08/19/03
- Re: The need to unmake move Jaime Benito de Valle Ruiz 19:09:38 08/19/03

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