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Cylindrical Chess. Sides of the board are supposed to be connected. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]
Michael Nelson wrote on Tue, Mar 21, 2023 01:45 PM UTC:Good ★★★★

Very nice touchup of the page. You might have mentioned that in problems, there is more than one way to use the cylinder concept. The one here described is chess on a horizontal cylinder, which is the only form that is playable as a game. Other forms have appeared in problems: the vertical cylinder with the first and last ranks connected and the anchor ring both basically both a vertical and horizontal cylinder simultaneously. In the latter case, a1 is connected to both a8 and h1 (and in some version h8 as well, if you really want to go crazy). With rooks and queens instantly attacking each other and the kings in mutual check, we'd need special rules to play this, but a KBB vs K ending on such a board can be analyzed, as well as more complex problems.