Mensa(r) Super-Smart Mind Twisters: 112 Word, Logic, Number, and Reasoning Puzzles

Mensa® Super-Smart Mind Twisters: 112 Word, Logic, Number, and Reasoning Puzzles (Mensa® Brilliant Brain Workouts)

Mensa® Mind Puzzles: 100 Word and Logic Games To: Improve Your Memory, Sharpen Your Wit, and Train Your Brain (Mensa's Brilliant Brain Workouts)

Mensa® Mind Benders: 100 Logic Games and Puzzles to Improve Your Memory, Exercise Your Brain, and Keep Your Mind Sharp (Mensa's Brilliant Brain Workouts)