Logic Puzzle Book for Adults Volume 1: 50 Easy to Hard Logic Grid Puzzles – The Real Brain Challenge Feline Puzzles, Press
Brain Workout: 500 Math and Logic Puzzles in 10 Types for Adults, Seniors & Thinkers With Rules, Examples and Solutions: Test Your Math Skills Using Mathrax, Calcudoku, Kakuro, Futoshiki and More Feline Puzzles, Press
Criminal Cases of Zebra Griddle the Detective – Logic Puzzles for Teens and Adults: 39 Murder Mystery Logic Grid Puzzles with Full Solutions Feline Puzzles, Goodwin, Perry, Press
Whodunit?! The Ultimate Detective Challenge – Deduction Logic Puzzles for Adults and Seniors: 50 Easy to Medium Difficulty Criminal-Themed Logic Grid Puzzles Feline Puzzles, Press