there is a technical reason why even sized boards never show up except for artificial situations -- there is no tengen. i believe (although i haven't thought about it carefully) that this affects mirror go, so makes it a technically different game (more so than just size). so for instance, 20x20 boards shouldn't behave "almost" like 19x19 boards, but 17x17 should (except for being much smaller). i'm not sure if there's a reason to believe that prime sizes are better than composite sizes, but could easily be convinced of this.
s. On Fri, Jul 15, 2011 at 4:58 AM, Petr Baudis <[email protected]> wrote: > On Thu, Jul 14, 2011 at 07:33:54PM -0400, Michael Williams wrote: >> How does Pachi handle integer komi? > > Naively, but reasonably well. It reached several jigos in the integer > komi 9x9 KGS tournaments. > > > On Thu, Jul 14, 2011 at 09:25:11PM -0400, Michael Williams wrote: >> I noticed some unusual beharior from Pachi on 6x6 with komi 4. I understand >> that this is not a format that you are targeting or have tested extensively, >> but I thought I would mention it in case it is symptomatic of something that >> may also come into play at other sizes. > > Thanks for reporting this. It is caused by the symmetry code, the > symmetry is not breaked properly on even-sized boards (I almost never > tested Pachi on these). Adjusting the symmetry code to handle even-sized > boards is possible, but it would require a serious thought I cannot > spare right now, so I applied a band-aid and disabled symmetry > compensation for even-sized boards altogehter for the time being. > Patches for a real solution are welcome. :-) > > > On Fri, Jul 15, 2011 at 12:05:28AM -0400, Michael Williams wrote: >> A feature request related to this: In uct_evaluate, don't process moves >> that are symmetrically-equivalent to moves that have already been processed. > > I have done that now, thanks for the suggestion. But as explained above, > it will have no effect on even-sized boards. > > -- > Petr "Pasky" Baudis > UNIX is user friendly, it's just picky about who its friends are. > _______________________________________________ > Computer-go mailing list > [email protected] > http://dvandva.org/cgi-bin/mailman/listinfo/computer-go > _______________________________________________ Computer-go mailing list [email protected] http://dvandva.org/cgi-bin/mailman/listinfo/computer-go
