The Big Logic Grid Puzzle Book for Adults 2026. +100 Engaging Brain-Training Puzzles with Verified Solutions Puzzlio, Studio
The Ultimate Activity Book for Smart Engineers: Over 100 Challenging Brain Teasers, Logic Puzzles, and Engineering Mind Games for Adults Solvemore, Studio
Relaxing Brain Games for Adults: 100+ Logic, Math, and Word Puzzles to Help You Unwind Callisto Publishing
The Ultimate Activity Book for Intelligent Men: Tricky Brain Teasers, Mind Games and Logic Puzzle Book for Adults (Perfect Gift for Men) IQ Street