Murdle Series 3 Books Collection Set By G T Karber (100 Elementary to Impossible Mysteries to Solve Using Logic, Skill, and the Power of Deduction) G. T. Karber
The 125 Best Brain Teasers of All Time: A Mind-Blowing Challenge of Math, Logic, and Wordplay Danesi, Marcel
The Ultimate Brain Health Logic Puzzle Book for Adults: Sudoku, Calcudoku, Logic Grids, Cryptic Puzzles, and More! (Ultimate Brain Health Puzzle Books) Danesi, Marcel