Binary Sudoku! - Paul King - Bog

Play Binary Sudoku! Raise your Sudoku game to a whole new level. Like traditional Sudoku, we use the numbers 1 - 9, only written in the binary numbering system. This book contains 50 unique sudoku puzzles carefully transcribed into binary. Designed to test your Sudoku chops, the included puzzles vary in difficulty from Easy, Medium, Hard, Very Hard and Mind Numbing!