I’ve been having a lot of fun with coordinate motion puzzles, some of which I’ve even blogged about. Well, one of the coolest is a Stewart Coffin design (STC-112) called “Burr Muda” and it looks like this: One of the things I really like about this design is that all six pieces are identical; that appeals to my sense of symmetry I suppose. Second, since it’s a coordinate motion puzzle, those six pieces must define […]