tag:blogger.com,1999:blog-6011690536420808420.post6384350372986203733..comments2017-03-29T09:40:37.737+02:00Comments on Chess960 (FRC): Calculate SP Numbers in Your HeadMark Weekshttps://plus.google.com/108259698103349939959noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-6011690536420808420.post-91590859256950036382012-05-03T10:32:56.857+02:002012-05-03T10:32:56.857+02:00Russell really well done on the maths!!!
Cheers
Ha...Russell really well done on the maths!!!<br />Cheers<br />HarryHarryOhttp://www.blogger.com/profile/15971894954907592580noreply@blogger.comtag:blogger.com,1999:blog-6011690536420808420.post-24096322444925194882012-05-01T10:29:09.105+02:002012-05-01T10:29:09.105+02:00I hadn't realized that word verification was a...I hadn't realized that word verification was active for comments. I turned it off for all of my blogs. Thanks for the heads-up. - MarkMark Weekshttp://www.blogger.com/profile/10101044127493771263noreply@blogger.comtag:blogger.com,1999:blog-6011690536420808420.post-34949226801840827132012-05-01T06:35:15.677+02:002012-05-01T06:35:15.677+02:00The "numbering" systems for chess960 are...The "numbering" systems for chess960 are really "naming" systems that use three-digit numbers as the names.<br /><br />The names are for human convenience, not for computers. Computer do not need these name-numbers.<br /><br />Therefore, any numbering / naming system that fails to make it obvious to humans when two start positions are mirrors of each other is a partial failure.<br /><br />Mirror: #271 & #771 should be the same piece sequence on rank 1, just in the reverse sequence of each other.<br /><br />The commonly used Scharnagl system has nice mathematics, but it fails the mirror test for human usability.<br /><br />GeneM<br /><br />P.S. If the "Please prove you're not a robot" challenges make the letters any weirder or harder to guess, I will give up.GeneMhttp://www.blogger.com/profile/17760103001033379456noreply@blogger.comtag:blogger.com,1999:blog-6011690536420808420.post-41942171200674323362012-04-07T04:36:00.231+02:002012-04-07T04:36:00.231+02:00Hello; here is a way to convert to and from Chess9...Hello; here is a way to convert to and from Chess960 numbers mathematically, without lookup tables at all: <a href="http://www.russellcottrell.com/Chess/Chess960.htm" rel="nofollow">The Chess960 Numbers Decoded</a>.<br />â€”RussellRussellhttp://www.blogger.com/profile/07257022811026147169noreply@blogger.com