Three Forks Puzzle
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Three forks are interlocked by aligning and moving them along the three perpendicular axes. The end of each fork can be closed with a bar to form three interlocked rectangles. This is an example of how three identical bodies can be joined together. The three interlocked rectangles are analogous to the Borromean rings.
Contributed by: Sándor Kabai (October 2008)
Open content licensed under CC BY-NC-SA