A puzzle can be made from wood, metal or plastic without belonging to a single category. Classification works best when it describes what the solver is expected to do.
Interlocking puzzles
Pieces lock together in three dimensions and usually have to be taken apart and rebuilt. Burrs, stars, balls and many wooden cubes belong here.
Jigsaw puzzles
Irregular pieces combine to make a picture, map or three-dimensional model. The visible surface often helps identify position.
Assembly and packing puzzles
Separate pieces must fill a container or form a target shape without necessarily locking together. Pentominoes and Soma-style cubes are examples.
Opening puzzles
The goal is to open a box, lock, safe or container by discovering a hidden sequence or mechanism.
Disentanglement puzzles
A ring, loop or string must be removed and normally replaced without bending, cutting or untying forbidden parts.
Sequential-movement puzzles
Parts move through a restricted series of states. Sliding blocks, ring sequences and twisty puzzles fit this broad class.
Folding and hinged puzzles
Connected panels, cubes or strips fold into a target. The Snake Cube combines linked sections with three-dimensional assembly.
Dexterity puzzles
The challenge depends on controlled movement, balance or timing rather than only logical analysis.
Pattern and dissection puzzles
Flat pieces form silhouettes, repeated patterns or geometric arrangements. Tangrams are the classic example.
Construction models
Numbered wooden or metal parts build a recognisable model. These are puzzle-like assemblies even when there is one intended sequence.
The Puzzle Museum’s detailed system contains fourteen main classes. This guide uses a simplified version intended for visitors identifying objects in the Crafty Puzzles archive.
Sources and further reading
- The Puzzle Museum: Definitions and classification
- The Puzzle Museum: Full classification
- Indiana University Libraries: What are mechanical puzzles?
These sources are provided for historical verification and further reading. The article above is newly written for Crafty Puzzles.