Mechanical puzzle cubes

3-D combination puzzle with many different permutations

mechanical puzzle

thumb|The Skewb in solved state thumb|The four turning planes of the Skewb bisect it as shown in this figure. The Skewb () is a combination puzzle and a mechanical puzzle similar to the Rubik's Cube. It was invented by Tony Durham and marketed by Uwe Mèffert. Although it is cubical, it differs from the typical cubes' construction; its axes of rotation pass through the corners of the cube, rather than the centers of the faces. There are four axes, one for each space diagonal of the cube. As a result, it is a deep-cut puzzle in which each twist affects all six faces.

shape-shifting puzzle similar to Rubik's Cube

solid dissection puzzle

3-D puzzle

combination puzzle

packing problem about packing thirteen 1×2×4 blocks, one 2×2×2 block, one 1×2×2 block and three 1×1×3 blocks into a 5×5×5 box

packing problem that calls for packing six 1×2×2 blocks and three 1×1×1 blocks into a 3×3×3 box

combination puzzle

combination puzzle

polyhedral mechanical puzzle toy invented in 1971