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Turning chess. Pieces can turn 45 degrees after movement. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]In Turning Chess, Betza's first example is Pawn 1 f2-f3 (turns right), 2 f3-g4 (right) 3 g4-h4 (no turn). That Pawn can never move again. Notice the optional ''turning'' after a move is always 1/8, same as saying 45 degrees. Betza postulates Turning Bishop and Rook having same value. In 2004 Comment Gilman takes exception that there is no such thing as Turning Knight, alleged by Betza within the article, and rather Knight turned logically becomes Camel. It leads Gilman in subsequent years to explore in depth all the angles involved for purposes of nomenclature, classification, and further invention of fairy-Chess-piece moving modalities.
I believe Ralph Betza is saying that a Mao becomes a Moa, and vice-versa, after what he calls a 45 degree turn. Thus the Knight is unchanged by turning. With regard to Charles Gilman's comment, I must admit that I find the Camel uninteresting, both as a chess player and a mathematician.
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