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Speed Is Great
I was looking for tools that would make it easier to solve the difficult puzzles. That's when I decided to buy your "How To Double Your Sudoku Speed" eBook. My speed did improve and I found the book very helpful. The practice examples were great.
I am surprised how many possible puzzles there are and that difficult puzzles may require you to use advanced techniques to solve them like x-y wing techniques etc.
John Goss Knoxville TN
When I bought the 'speed' book, I wanted to be able to solve any and all sudoku as fast as possible. I still haven't had the time to spend on it that I would like. But what I have gone through has helped me a whole lot. I am surprised how the speed reading makes it go faster.
In a future edition I am looking for better abilities in the reduction process.
Kathy, Montclair