Binairo (Binary Puzzle): 500 Easy to Hard (10x10): Keep Your Brain Young

Binairo (also known as 'Binary Puzzle ', 'Takuzu', 'Tohu wa Vohu') is a logic puzzle with simple rules and challenging solutions. It is played on a rectangular or square grid. This Logic Puzzles book is packed with the following features: - 500 Binary Puzzle (10x10) from Easy to Hard. - Answers to every puzzle are provided. - Each puzzle is guaranteed to have only one solution. * Includes free bonus puzzles you can download book (Tons of Sudoku Puzzles for Adults & Seniors) * Includes free bonus puzzles you can download book (Word Search With Hidden Message: 102 Puzzles for Adults and Seniors)