Francis’ Rules for Sudoku
The book “Sudoku - Explaining the fifteen steps of Francis’ Rules for Sudoku” was first published in 2006. Since then, another book “Sudoku is Fun: Taking the Francis’ Run” was published later in the same year. The preface to the first book reads thus: “If you are into solving Sudoku challenges, this book should be read. It illustrates how you can apply Francis’ Rules to shorten the time taken to obtain a solution to any Sudoku challenge. “If you are not into Sudoku Challenges, then you are missing out on an opportunity for the development of your brain power to […]
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