Sudoku No Four in a Row - 200 Master Puzzles 11x11 (Volume 36)

No Four in a Row is played on a grid of irregular shape.
Some cells of the grid contain 'X' and 'O'.
The task is to fill in the grid so that four consecutive identical symbols never appear in any row, column or diagonal.

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.