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Not-so colorbound cylindrical chess. Game only with pieces, that would be colorbound on normal board. (7x8, Cells: 56) [All Comments] [Add Comment or Rating]

Michael Nelson wrote on Tue, Feb 25, 2014 01:03 AM UTC:Excellent ★★★★★

Excellent thematic variant! I've not seen the idea of imposing colorboundness on all pieces but removing it by the odd number of files on a cylindrical board, thought I recognize component ideas.

A small quibble about promotion:

Promotion to a Knight is needed in FIDE Chess, as its moves are not a subset of the Queen's move. In some positions, the Knight can checkmate when the Queen can't even check. This factor does not apply to this game; but there is one case where underpromotion to Rook or Bishop in needed (rather than merely allowed) in FIDE--when promoting to Queen would result in immediate stalemate, but the lesser promotion could force checkmate on a subsequent move. With three combination pieces to choose from, it is much less likely in this variant,  but analysis is needed to determine if it is possible: if so, underpromotion must be allowed (if and only if stalemate is a draw).

💡📝Daniil Frolov wrote on Tue, Feb 25, 2014 07:36 AM UTC:

Thank you. (:

Yes, i know that promotion to basic pieces is usually needed to avoid stalemate, and i've seen a statement that if promotion to any double combination of three basic pieces is allowed, promotin only to compounds is enough to avoid any stalemate. Well, maybe, it's not case of this game, and i should think it out better... But i don't think so. Pieces must have some overlaping moves, so that promotion to any piece will cause stalemate in certain situation. On this board bishop have some moves, that can also be made by rook (in different paths), but not to same rank, and if to same file - it's to odd number of squares away, so it don't overlap with dababah-rider's move. Camel also is not able to move to squares, directly orthogonally or diagonally-away.

🕸Fergus Duniho wrote on Fri, Apr 1, 2016 02:21 PM UTC:

This page also has an off-site hosted image. Would you please correct this?

🕸Fergus Duniho wrote on Sun, Jun 6, 2021 09:28 PM UTC:

The off-site image on this page looks like it was made with Game Courier or the Diagram Designer, and it could easily be replaced with a query string link provided by the Diagram Designer.

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