The ultimate compilation of line- and loop-drawing logical puzzle mazes, covering a wide range of types. It has everything from twists on the classic maze throu

One Year To A BETTER BRAIN! A 52-Week Program To Make You Sharper, Day By Day A fun program-featuring LOGIC, OBSERVATION, NUMBER, and WORD PUZZLES, in categorie

A brain-teasing collection of mental workouts, designed to be solved in 10 minutes. Puzzlers of all skill levels: challenge yourself to tests of logic and reaso

More than 400 all-new mind-bending puzzles from one of the world's leading puzzle masters, ranging from basic brain-teasers to baffling brain-tormenters. The co