Cross Knot | Burr Puzzle - Japanese Interlocking Puzzle – Kubiya Games
Scrollsaw Workshop: Wooden Knot Puzzle Pattern
This is the Gordian Knot Puzzle by Robert Yarger. Only 28 were crafted and it takes a minimum of 36 steps to solve. AMAZIN… | Puzzle box, Puzzle, Decorative boxes
Amazon.com: Think Fun Gordian's Knot, Model:6820-T : Toys & Games