25th anniversary cube
Puzzle made for the 25th anniversary of the cube.
Good for speedcubing after lubricating.
CUBE (SHAPE CHANGING)
A Square-1 with an internal blocking of movements. A Square-1 even more bandaged.
The Bump Cube is a simple 3x3x3 Rubik's cube, but with an interesting twist. It spawned a whole series of puzzles and created a verb of its own.
Meffert's version from 1982 with six colours.