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PEXT Bitboards
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Rein Halbersma



Joined: 22 May 2007
Posts: 652

PostPost subject: Re: PEXT Bitboards    Posted: Mon Jul 17, 2017 5:44 am Reply to topic Reply with quote

lucasart wrote:
To make software PEXT useful for chess, it needs to be on par with magic multiplication. And I really don't think the above will be.

So, the choice is still between hardware PEXT and Magic.


For move generation, I agree,: magic should be faster than software PEXT. But you can also use PDEP / PEXT when computing endgame database indices when there are multiple pieces of one kind, see Ronald's posts. Still a niche use case in chess, but the default for draughts endgames.
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Subject Author Date/Time
PEXT Bitboards Gerd Isenberg Fri Jun 07, 2013 2:09 pm
      Re: PEXT Bitboards Ronald de Man Fri Jun 07, 2013 9:57 pm
            Re: PEXT Bitboards Gerd Isenberg Fri Jun 07, 2013 10:52 pm
                  Re: PEXT Bitboards Ronald de Man Fri Jun 07, 2013 11:49 pm
                        Re: PEXT Bitboards Jhor A. Vi Thu Jun 13, 2013 12:12 pm
                              Re: PEXT Bitboards Gerd Isenberg Thu Jun 13, 2013 1:53 pm
                                    Re: PEXT Bitboards Jhor A. Vi Mon Mar 24, 2014 5:37 am
                                          Re: PEXT Bitboards Paul Henri Mon Mar 24, 2014 6:10 am
                                          Re: PEXT Bitboards Gerd Isenberg Mon Mar 24, 2014 4:07 pm
                  Re: PEXT Bitboards Rein Halbersma Sun Jul 16, 2017 8:00 pm
                        Re: PEXT Bitboards Lucas Braesch Mon Jul 17, 2017 5:02 am
                              Re: PEXT Bitboards Rein Halbersma Mon Jul 17, 2017 5:44 am
                                    Re: PEXT Bitboards Gerd Isenberg Mon Jul 17, 2017 2:48 pm
                                    Re: PEXT Bitboards Ronald de Man Mon Jul 17, 2017 8:08 pm
                                          Re: PEXT Bitboards Rein Halbersma Mon Jul 17, 2017 8:22 pm
                                                Re: PEXT Bitboards Ronald de Man Mon Jul 17, 2017 10:54 pm
                              Re: PEXT Bitboards J. Wesley Cleveland Mon Jul 17, 2017 3:04 pm
                                    Re: PEXT Bitboards Lucas Braesch Tue Jul 18, 2017 7:39 am
                                          Re: PEXT Bitboards J. Wesley Cleveland Tue Jul 18, 2017 4:16 pm
                        Re: PEXT Bitboards Rein Halbersma Mon Jul 17, 2017 8:13 pm
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