How to Solve Sudokus in 5 Minutes - Techniques, Strategies, Training Methods and Timing Charts for Hard and Extreme Sudoku's
by
Mike Colloby
Top-level Sudoku is all about speed, speed and more speed. Solving hard Sudokus in less than 5 minutes is the ultimate challenge, and the focus of this book.
Paperback, 248 pages
Published
June 23rd 2007
by Lulu.com
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