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Puzzles
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Demonstrations 1  20 of 423
Nonogram from Photo
Three Forks Puzzle
Identify the Vertices of a Polyhedron
How Many Words Do You Know?
Floppy Cube
Space Visualization Test on Pyramid Edges
Is This Number a Prime?
Magic Zero Hexagons
Mondrian Art Problem
Tri: A Variant of Hex Played on a Sphere
Circle of Lamps
Magic Squares from Latin Squares
3D Printer Templates for Mazes on a Cube
Magic Squares and Designs
Search for Soma Cube Solutions
Matching the Faces of a Polyhedron Shown as a Map Projection to a Net
Transforming Polyhedra with Colored Faces
3D Mazes on a Rectangular Toroid
Odd One Out
Kowalewski's Settlement Problem for the Rhombic Dodecahedron
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