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Spiral Chess. The royal pieces slide along a spiral trajectory.[All Comments] [Add Comment or Rating]
Greg Strong wrote on 2021-06-06 UTC

I'm not seeing anything explicit about whether a king sprials clockwise or counter-clockwise (or both.) And does black spiral the opposite way? (Based on your description of king vs king endgames, I'm thinking not, although it seems to me that should be the case - unless, of course, both can spiral in both directions.)