Walter Hoppe

10 Irregular Heptiamonds
18-Piece Packing Puzzle
Basket Case
Block and Key
Bundle of Wood
Capsule Construction
Cell Block
Commuters' Chaos
Conway Puzzle
Crafty Crates
Crossroad Puzzle
Czech Farms
Devil of a Puzzle
Dipole Dilemma
Eccentric Pentominoes
Evergreen Tree Puzzle
Four Sleazy Pieces
FourTress
Foxes and Wolves
Going Square With Circles
Half Pack Puzzle
Houses and Factories 2