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Third of a series of three similar puzzles. The three differ only by the colors of the pieces.

This puzzle consists of two intersecting circular disks. The distance between the centres is exactly one radius length. The disks are made up of many pieces with curved sides, which allow them to be rotated any number of quarter turns. Each disk has 4 squares, 4 diamonds, and 12 triangles. As some pieces are shared between the two disks, there are all together 6 squares, 7 diamonds, and 20 triangles.

There are three different vesion of Rashkey which differ only by the colors of the pieces. The three puzzles are ordered by increasing difficulty.

Rashkey 3 has 13335840000 permutations.

Diameter: 50 mm (one circle)

Weight: 28 grams

There is an earlier variant of this puzzle (1982) independently made by Douglas Engel. Please refer to the third image.

For this image applies:

Courtesy, The Lilly Library, Indiana University, Bloomington, Indiana.

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Contributors

Thank you to the following people for their assistance in helping collect the information on this page: **Oscar Rosen**.

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