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|A searchable site with information and a discussion group (Puzzle Talk) about handcrafted mechanical puzzles. Most of the puzzles presented here are not the mass-produced variety found in stores, but limited production puzzles produced by craftsmen (often the designers themselves) working primarily in wood. Categories include Put-Together Puzzles; Take-Apart Puzzles; Interlocking Puzzles; Disentanglement Puzzles; Sequential Movement Puzzles; Puzzle Vessels; Dexterity Puzzles; Vanish Puzzles; and Impossible Objects. Also The Puzzling World of Polyhedral Dissections by Stewart Coffin, and Nick Baxter's Sliding Block Puzzles.|
|Levels:||Middle School (6-8), High School (9-12), College|
|Math Topics:||Higher-Dimensional Geometry, Art|
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