The Ultimate Logic Grid Puzzle Book for Adults, Volume 2: Another 100 Fun and Challenging Puzzles (Logic Puzzles – The Ultimate Collection) Unicorn Books
Logic Grid Puzzles: An Illustrated Collection with Facts from the Real World (Logic Puzzle Books for Adults) Unicorn Books
The Logic Puzzle Advent Calendar: Puzzle Book for Adults with Christmas-Themed Logic Grid Puzzles from Medium to Near Impossible (The Logic Puzzle Advent Collection) Unicorn Books
The Ultimate Logic Grid Puzzle Book for Adults: 100 Fun and Challenging Puzzles (Logic Puzzles – The Ultimate Collection) Unicorn Books