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Crafty 23.2 released.
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Peter Skinner



Joined: 26 Feb 2006
Posts: 1758
Location: Edmonton, Alberta, Canada

PostPost subject: Crafty 23.2 released.    Posted: Thu Mar 04, 2010 2:43 am Reply to topic Reply with quote

Hello everyone,

Crafty 23.2 has been released.

Here are the changes since 23.1:
Code:

*    23.2   Two changes related to draw handling.  First, the 50-move draw    *
 *           rule is tricky.  It is possible that the move on the 100th ply    *
 *           after the last non-reversible move might not be a draw, even if   *
 *           it is reversible itself, because it might deliver mate.  In this  *
 *           specific case, the mate will end the game as a win.  This has     *
 *           been fixed in Crafty to match this specific rule exception.  Also *
 *           draws by "insufficient material" have been changed to match the   *
 *           FIDE rules which say that mate can't be possible, even with worst *
 *           possible play by the opponent.  Crafty would claim a draw in a    *
 *           simple KN vs KN position, which is incorrect.  Even though        *
 *           neither side can force mate, mate is possible and so the position *
 *           is not a draw by FIDE rules.  Mobility scoring changed for        *
 *           sliding pieces.  Now the mobility scores are pre-computed and     *
 *           stored in a table that is addressed by the "magic number move     *
 *           generation idea".  This completely eliminates the computational   *
 *           cost of the mobility scoring since all of the scores are pre-     *
 *           computed before the game starts.  This was a modest speed         *
 *           improvement but really made the code simpler and smaller.  Change *
 *           to lazy eval cutoff code to improve accuracy.  BookUP() had a     *
 *           minor bug that caused it to not report how many moves were not    *
 *           included because of the "maxply" limit.  This has been fixed also *
 *           so that it now reports the correct value.  New xboard "cores" and *
 *           "memory" command support added.  Code to malloc() both was also   *
 *           rewritten completely to clean it up and simplify things.          *
 *                                                                             *
 *******************************************************************************


As always, I have built Win32/64 versions for those that can not compile for themselves.

http://www.webkikr.com

Peter
_________________
I got kicked out of Chapters because I moved all the Bible's to the fiction section.
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Subject Author Date/Time
Crafty 23.2 released. Peter Skinner Thu Mar 04, 2010 2:43 am
      Re: Crafty 23.2 released. Marc MP Thu Mar 04, 2010 2:48 am
            Re: Crafty 23.2 released. Robert Hyatt Thu Mar 04, 2010 4:19 am
                  Re: Crafty 23.2 released. john dalhem Thu Mar 04, 2010 4:21 am
                        Re: Crafty 23.2 released. Robert Hyatt Thu Mar 04, 2010 10:48 pm
                              Re: Crafty 23.2 released. Robert Flesher Fri Mar 05, 2010 2:01 pm
                                    Re: Crafty 23.2 released. Robert Hyatt Fri Mar 05, 2010 11:07 pm
                                          Re: Crafty 23.2 released. Robert Flesher Sun Mar 07, 2010 6:12 pm
                  Congratulations! my test Togga Thu Mar 04, 2010 11:20 am
                        Re: Congratulations! my test Martin Helmer Thu Mar 04, 2010 11:39 am
                              Re: Congratulations! my test Togga Thu Mar 04, 2010 11:55 am
                        the crafty-crafty games Togga Thu Mar 04, 2010 11:45 am
                              Re: the crafty-crafty games Robert Hyatt Fri Mar 05, 2010 4:19 am
                                    Re: the crafty-crafty games Aser Huerga Fri Mar 05, 2010 9:21 am
                                          Re: the crafty-crafty games john dalhem Fri Mar 05, 2010 10:32 am
                                                Re: the crafty-crafty games Aser Huerga Fri Mar 05, 2010 11:02 am
                                                      Re: the crafty-crafty games Aser Huerga Fri Mar 05, 2010 12:25 pm
                                                            Re: the crafty-crafty games Aser Huerga Fri Mar 05, 2010 1:30 pm
                                                      Re: the crafty-crafty games Robert Hyatt Fri Mar 05, 2010 11:09 pm
                                          Re: the crafty-crafty games Robert Hyatt Fri Mar 05, 2010 11:08 pm
                                                Re: the crafty-crafty games Aser Huerga Fri Mar 05, 2010 11:52 pm
                                                      Re: the crafty-crafty games Robert Hyatt Sat Mar 06, 2010 2:44 am
                                                            Re: the crafty-crafty games Aser Huerga Sat Mar 06, 2010 8:57 am
                                                                  Re: the crafty-crafty games Werner Schüle Sat Mar 06, 2010 9:33 am
                                                                        Re: the crafty-crafty games Aser Huerga Sat Mar 06, 2010 9:42 am
                                                                              Re: the crafty-crafty games F. Bluemers Sat Mar 06, 2010 11:39 pm
                                                      Re: the crafty-crafty games J. Wesley Cleveland Sat Mar 06, 2010 11:28 pm
                                                            Re: the crafty-crafty games Swaminathan Sat Mar 06, 2010 11:37 pm
                                                                  Re: the crafty-crafty games Swaminathan Sat Mar 06, 2010 11:44 pm
                        Re: Congratulations! my test Robert Hyatt Thu Mar 04, 2010 7:28 pm
                              games Togga Thu Mar 04, 2010 7:34 pm
                  what timecontrol? Togga Thu Mar 04, 2010 11:58 am
            Re: Crafty 23.2 released. Werner Schüle Thu Mar 04, 2010 7:44 am
                  Re: Crafty 23.2 released. Robert Hyatt Thu Mar 04, 2010 7:30 pm
                        Re: Crafty 23.2 released. Togga Thu Mar 04, 2010 7:37 pm
                              Re: Crafty 23.2 released. Robert Hyatt Thu Mar 04, 2010 10:49 pm
      Re: Crafty 23.2 released. Graham Banks Thu Mar 04, 2010 2:51 am
      Re: Crafty 23.2 released. Robert Hyatt Thu Mar 04, 2010 4:17 am
            Re: Crafty 23.2 released. Peter Skinner Thu Mar 04, 2010 7:54 am
                  Re: Crafty 23.2 released. Kirill Kryukov Thu Mar 04, 2010 8:24 am
                        Re: Crafty 23.2 released. Dr.Wael Deeb Thu Mar 04, 2010 8:38 am
                              Re: Crafty 23.2 released. clare marie benedicto Thu Mar 04, 2010 9:07 am
                                    Re: Crafty 23.2 released. Dr.Wael Deeb Thu Mar 04, 2010 11:03 am
                                          Re: Crafty 23.2 released. clare marie benedicto Thu Mar 04, 2010 12:34 pm
                                                Re: Crafty 23.2 released. Dr.Wael Deeb Thu Mar 04, 2010 4:48 pm
                                    Re: Crafty 23.2 released. Togga Thu Mar 04, 2010 12:22 pm
                        Re: Crafty 23.2 released. Graham Banks Thu Mar 04, 2010 8:38 am
                              Re: Crafty 23.2 released. Kirill Kryukov Thu Mar 04, 2010 9:54 am
                  Re: Crafty 23.2 released. Miguel A. Ballicora Thu Mar 04, 2010 9:07 am
                  Re: Crafty 23.2 released. Robert Hyatt Thu Mar 04, 2010 7:32 pm
                        Re: Crafty 23.2 released. Peter Skinner Thu Mar 04, 2010 7:36 pm
                              Re: Crafty 23.2 released. Miguel A. Ballicora Thu Mar 04, 2010 9:02 pm
                                    Re: Crafty 23.2 released. Robert Hyatt Mon Mar 08, 2010 2:38 pm
      right crafty.rc settings? Togga Thu Mar 04, 2010 12:11 pm
            Re: right crafty.rc settings? Jouni Uski Thu Mar 04, 2010 4:08 pm
      Re: Crafty 23.2 released. Bernhard Bauer Thu Mar 04, 2010 1:01 pm
            Re: Crafty 23.2 released. Robert Hyatt Thu Mar 04, 2010 7:34 pm
            Re: Crafty 23.2 released. Jouni Uski Fri Mar 05, 2010 4:52 pm
                  Re: Crafty 23.2 released. Bernhard Bauer Fri Mar 05, 2010 9:12 pm
                        Re: Crafty 23.2 released. Jouni Uski Mon Mar 08, 2010 9:17 am
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