Sudoku Binary - 200 Hard to Master Puzzles 9x9 (Volume 21)

The binary puzzle (also known as "Binairo", "Takuzu", "Tohu wa Vohu") is a new logic puzzle that you can solve by using only zeros and ones. The rectangular or square grid should fill the numbers in accordance with the following rules:

- Each row and each column contain the same number of digits "1" as digits "0" (or one more for odd sized grids).

- The same number can only be in no more than two cells in a row.

- Each line must be unique, and each column must be unique. The puzzle book contain:

- 200 Puzzles

- Handy 6 x 9 inch Book Layout

- 2 Puzzles per Page

- Ideal for Experts In the book you will find a description and examples of solutions for all puzzles.

The book is for those who like logic and math problems. Decide, developing and improving.