Origami Chess (especially formatted for Kindle and other small devices) shows how to fold 20 models, all original designs by origami master John Montroll. You can fold all the chess pieces, tic-tac-toe pieces, and many chess boards. There are diagrams for the 1 x 1, 2 x 2, 3 x 3, 4 x 4, 5 x 5, 6 x 6, 7 x 7, and 8 x 8 chess boards. Each model is folded from a single square sheet. As a bonus, some math theory of origami chess boards is given. The models range from simple to complex. These fun projects demonstrate interesting concepts in origami.