TWISTY PUZZLES by DAVID BYRDEN

Octahedral twisty puzzles

A twisty puzzle can be built so that either the sides or the corners twist. This distinction is particularly apparent in Octahedra.

Here, the sides twist. Professor Ernő Rubik had the idea for twisting an octahedron this way. An image of the puzzle.
The same idea, in size 3x3.An image of the puzzle.
In this one, the corners twist.An image of the puzzle.
The corners twist here.An image of the puzzle.
When an octahedron is only 2x2, there is no point in colouring the sides. But you can make a puzzle by colouring at the corners. An image of the puzzle.
This is a larger octahedron with coloured corners. A physical implementation of this was invented by Josef Trajber. An image of the puzzle.
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Copyright © David Byrden 1997-2010