Mike Colloby

Books
Visualization Techniques for Solving Sudokus in 5 minutes: Techniques, Strategies, Training Methods and Timing Charts for Hard and Extreme Sudokus Visualization Techniques for Solving Sudokus in 5 minutes: Techniques, Strategies, Training Methods and Timing Charts for Hard and Extreme Sudokus
Visualization Techniques for Solving Sudokus in 5 minutes: Techniques, Strategies, Training Methods and Timing Charts for Hard and Extreme Sudokus
2011
How to Become a Top Sudoku Player : Techniques, Puzzles, Examples, Training Methods and Timing Charts for Hard and Extreme Sudokus How to Become a Top Sudoku Player : Techniques, Puzzles, Examples, Training Methods and Timing Charts for Hard and Extreme Sudokus
How to Become a Top Sudoku Player : Techniques, Puzzles, Examples, Training Methods and Timing Charts for Hard and Extreme Sudokus
2011