[ Help | Earliest Comments | Latest Comments ][ List All Subjects of Discussion | Create New Subject of Discussion ][ List Earliest Comments Only For Pages | Games | Rated Pages | Rated Games | Subjects of Discussion ]Single Comment The Retrograde Analysis Corner . Website with much information on retrograde chess problems.[All Comments] [Add Comment or Rating]George Duke wrote on 2011-01-07 UTCExcellent ★★★★★From 14 years ago and uncommented since at least 2003, these are exactly the two intended links at Betza/Neto Retrochess 1998 below. No comparison which is more interesting, the Betza/Neto cv class or the established genre of ortho-chess problems as a whole. A comment at Retrochess says, ''After un-castling, the King and the Rook are frozen,'' because if they move the Castle would be invalidated. That is used before in plain problems and not too startling with the Betza/Neto objective ultimately to get back to the array. Smullyan has several retrogrades indicated, for one http://www.chessvariants.org/index/displaycomment.php?commentid=23392.