Oskar's Mechanical Puzzles

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Geared twisty puzzles

These twisty puzzles have gears. This creates whole new ways of twisting. Some are inspired by Bram Cohen. All are designed by Oskar van Deventer.

Hollow twisty puzzles

These twisty puzzles have holes. Inspired by Okamoto's Void Cube, a Rubik's Cube that is hollow inside, several more hollow twisty puzzles were developed. All designed by Oskar van Deventer.

Fractal twisty puzzles

These twisty puzzles are self-similar, and could be scaled up even larger

Sliding-piece puzzles

These are puzzles with pieces sliding around. As you can see, there is no clear boundary between sliding-piece puzzles and twisty puzzles. All developed by Oskar van Deventer, based on ideas by Alex Polonsky, Bram Cohen and Jimmy Stephens..

Mechanical mazes

These are mechanical puzzles for which the solving experience is like solving a maze. All designed by Oskar van Deventer.

Puzzle Rings

These so-called "Turkish puzzle rings" are multiple-band rings that are linked together. Once scrambled, it is quite a puzzle to get the ring back together again. These are modern puzzle ring designs by Bram Cohen and prototyped by Oskar van Deventer.

Math art and magic

These are puzzling objects that are not puzzles. Some are mathematical patterns, some look like a magic trick and some feature interesting mechanisms. All designed by Oskar van Deventer.