Burr puzzle - Wikipedia

Make and Solve a 3 Piece Burr Puzzle

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Interlocking Burr Puzzles

Enigma Variations - Wikipedia

Octomino, tromino, Polyiamond, hexomino, Dissection puzzle, Polyomino, Tetromino, Pentomino, Pythagorean Theorem, tessellation

Top 10 3D Puzzles

File:Six-Piece Burr - Nut Puzzle.svg - Wikipedia

Arbitrary Burr Puzzle STL Engine Six-Piece, Parametric by creadaptive, Download free STL model

Combination puzzle - Wikipedia