Logic Grid Puzzles Triple Trouble: 150 Devilishly Fun Puzzles (3 Books in 1) (Logic Puzzles for Adults – Platinum Collection) Unicorn Books
Logic Grid Puzzles, Volume 3: From Easy to Fiendishly Hard (Logic Puzzles for Adults – Platinum Collection) Unicorn Books
Logic Puzzles for Kids 8-12: Challenging and Fun Logic Grids, Brain Teasers, and Other Puzzles to Improve Logic Skills while Having a Blast (Logic Games for Smart Kids) Unicorn Books