Quantum Chess is a set which can be used to play four Chess variants. Two are played on a 10x10 board and two on a 12x12 board. All use additional pieces, most notably the bowman, which cannot capture normally. Instead, it moves like a non-jumping knight, and after moving captures a piece on the square an additional knight's move away in the same direction. The other new pieces are combinations of existing pieces or the bowman plus existing pieces.

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