Rainbones

Donald E. Knuth and George Miller made a plastic toy, rainbones, using interlocking arcs. The pcs have to lie flat on the plane.

Catalog number 200623 exchange gift at IPP27 in 2007 in Gold Coast, Australia.

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Age of Puzzles publication, Rainbones section, w/o/ persmission

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a single rainbones solution

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One each Rainbones Solutions for "warmup", 8, 11, 12

The 'Warmup' is a partial solution, involving the 1, 2, 4, and 5 bones.

References