Coffin's Quartet puzzle by Stewart Coffin

Coffin’s Quartet is a classic cube puzzle created by the renowned designer Stewart Coffin. It consists of four interlocking wooden pieces that must be assembled into a perfect cube, a task that looks deceptively simple but requires careful spatial reasoning and patience. The puzzle highlights Coffin’s signature design style—elegant geometry combined with surprising difficulty—making it both a collector’s item and a teaching tool for exploring concepts of symmetry, rotation, and problem-solving. Its compact form and clever construction embody the beauty of mathematical puzzles in physical form, challenging solvers to think beyond the obvious and discover hidden pathways to completion.