Hexaflexagons
Magic with a matrix
Nine problems
Ticktacktoe
Probability paradoxes
The icosian game and the Tower of Hanoi
Curious topological models
The game of hex
Sam Loyd : America's greatest puzzlist
Mathematical card tricks
Memorizing numbers
Nine more problems
Polyominoes
Fallacies
Nim and tac tix
Left or right?

The mathematical recreations presented here are designed to delight and perplex while demonstrating mathematical principles. The book contains the earliest of Gardner's popular 'Scientific American' columns, now with updated information on new game variations, mathematical proofs and other developments