| 摘要 |
A self-contained loop puzzle has a plurality of closely spaced casements, selected casements being rotatable around their longitudinal axes of symmetry. Selected casements contain an indicia bearing tile and a second indicia bearing tile in spaced relationship such that the plurality of casements presents a series of tiles in a given order, and at least two spaced tracks are defined by the closely spaced casements in the loop. The tiles are slidably in the respective tracks, whereby selective, partial rotation of casements and the sliding movement of tiles along the loop produces a reverse order for the series of tiles.
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