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Chained Square. Can you fit the puzzle into a frame?
$29.00
Chained Square has 16 squares that are connected with ball chain. This gives it great flexibility, as observed by Peter Knoppers. The goal is to fold a 4x4 square. The puzzle has several other challenges as well. The puzzle is difficult because of the tetrahedral topology of the weave pattern, and the lack of "simple conventional" solutions.
Designer: Oskar van Deventer
Material: 3D printed PLA
Watch how I solved the Chained Square puzzle - https://www.youtube.com/watch?v=tC_elP9l1RM
Colors may vary.