Variety Logic Puzzles for Adults (Kindle Scribe Only): A Fun and Challenging Activity Book to Test Your Wits with Logic Grids, Battleships, Skyscrapers, and Minesweepers Books, Unicorn
The Ultimate Logic Grid Puzzle Book for Adults, Volume 4 – Extreme Edition: 100 Fiendishly Fun and Creative Puzzles for Passionate Solvers (Logic Puzzles – The Ultimate Collection) Books, Unicorn