Math Bafflers requires students to use creativity, critical thinking, and logical reasoning to perform a variety of operations and practice skills that align wi

Over 155 truly challenging conundrums for the expert puzzlist. Algebraic amusements, geometric exercises, diophantine diversions, problems in logic and deductio

Treasury of challenging brainteasers includes puzzles involving numbers, letters, probability, reasoning, more: The Enterprising Snail, The Fly and the Bicycles

What a bargain! At more than 700 puzzle-packed pages, this huge, value-priced collection should keep any solver happy...and busy for a very long time. It contai

Treasury of 135 bafflers (70 "quickies" and 65 "micropuzzles") specially designed for computer hobbyists. Puzzles range from relatively simple exercises in logi