Mechanical Puzzles

Mechanical Puzzle Pages

• Lomino Cube 4 (IPP exchange puzzle, 2012)
• Three Piece Whatsit Solution, aka Tilted Cube aka Donz Q'b (IPP exchange puzzle, 2011)
• Christmas Ornament Solutions aka Interlocking 10-Ball Tetrahedron and Three Piece Octahedron (2010)
• Screwy Octahedron aka Screwy Octahedron1 (IPP exchange puzzle, 2010)
• Interlocking 20-Ball Tetrahedron aka Interlocking 20-Ball Tetrahedron1 (2009)
• Nine Bed Nightmare aka Nine Bed Nightmare (2009)
• Teaser Balls Solution (2008)

Pencil and Paper Puzzle Pages

• Lominoes for G4GX (10th Gathering for Gardner, 2012)
• Lominoes for G4G9 (9th Gathering for Gardner, 2010)
• The mathematics of Septoku (2008) (a Sudoku variant invented by Bruce Oberg)
• G4G8 Chess Conundrum (8th Gathering for Gardner, 2008)
• Diagonal Peg Solitaire (7th Gathering for Gardner, 2006)

Puzzle Documents

• Solving J. Gordon's Giant Pyramid, Cubism For Fun #90 (2013) [The puzzle discussed in the article can be purchased from Kadon Enterprises]
• More Icosahedron Puzzles, Cubism For Fun #87 (2012)
• Five Intersecting Tetrahedra, Cubism For Fun #85 (2011)
• Dyeing Shapeways Puzzle Pieces (2011) [obsolete, no longer accurate]
• Sphere Octahedron Puzzles, Cubism For Fun #84 (2011)
• Classification of Polyspheres, Cubism For Fun #81 (2010)
• The Dynamics of Spinning Polyominoes (2009)
• Solving Puzzle using Maps, Cubism For Fun #77 (2008)
• Some Notes on Ball-Pyramid and Related Puzzles, Leonard Gordon (1986), 18 pages
  [I scanned in this obscure document, adding a few comments in red. Last modified: Apr 2013]

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