Puzzle Mechanics

3D Assembly

Assemble three-dimensional pieces into a target solid or spatial structure.

4 in catalog

Difficulty 4/10

Pack six flat pieces of 2 to 7 cubes into a solid 3×3×3 cube; there are about 13 distinct solutions.

Difficulty 5/10

A 3D interlocking wood (burr) puzzle: notched sticks assemble into a rigid cross without glue; take apart and reassemble.

Difficulty 5/10

Fold a chain of 27 linked small cubes, section by section, into a solid 3×3×3 cube.

Difficulty 6/10

Assemble seven irregular cube pieces into a 3×3×3 cube or another prescribed three-dimensional form.