Logic Grid Puzzles, Volume 2: From Easy to Fiendishly Hard (Logic Puzzles for Adults – Platinum Collection) Unicorn Books
Math Puzzle Book For Adults: 300 Fun & Challenging Math Logic Puzzles For Adults & Seniors Large Print Mathrax, Consecutive Sudoku, Calcudoku, Kakuro, … Less, Sign In (Math Puzzle Books For Adults) Books, Fun2cipher
Bordergrams: 80 Secret Spy Connection Puzzles from the Bestselling Author of Murdle Amin, Dani, Daniel, Donohue, G. T., Karber, Messerschmidt, Osman