Problem Solving Through Recreational Mathematics (Dover Books on Mathematics)
The Colossal Book of Mathematics: Classic Puzzles, Paradoxes, and Problems
A Passion for Mathematics: Numbers, Puzzles, Madness, Religion, and the Quest for Reality
My Best Mathematical and Logic Puzzles (Dover Recreational Math)
Mathematical Solitaires and Games (Excursions in Recreational Mathematics)
The Moscow Puzzles: 359 Mathematical Recreations (Dover Recreational Math)
Perplexing Puzzles and Tantalizing Teasers (Dover Children's Activity Books)