Home / All Products / Difficult Logic Puzzles for Adults 130+ Puzzles Difficult Logic Puzzles for Adults 130+ Puzzles$19.35 Go to Product Categories: All Products, Adults Puzzle Books, Brain Teasers, Logic Game Books Related products The Mammoth Book of Logical Brain Games Gareth Moore $16.39 Go to Product 100 Easy Brain Exercises & Puzzles for Adults (Backyard Theme) $14.99 Go to Product Logic Workbook for Gritty Kids by Dan Allbaugh $12.00 Go to Product