Extreme Sudoku: A collection of 200 of the toughest Sudoku puzzles known to man. (With their solutions.) - Paperback
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Hard sudoku that stays hard: 200 grids picked from the 17 clue family, every one of them answered in the back for when a grid wins.
Antoine Alary went looking for the puzzles that break the usual scanning habits, and the ones he kept need chained techniques rather than patience.
Good to know
This is not a warm up book. Solvers who came in from newspaper grids say so plainly, and a few decided the top end was past the point of fun.
From the publisher
This book contains a selection of 200 of the hardest and most difficult Sudoku puzzles along with their solutions.
These puzzles were selected among 17-clues Sudoku puzzles for their especially challenging nature and will provide hours of enjoyment and ample opportunity to practice the most advanced Sudoku resolution techniques.
His varied interests and talents led him to first study mathematical logic and obtain a Masters Degree from the Université de Montréal. After working as a software programmer and doing some freelance electronic design for a few years, he went back to school and obtained a Masters Degree in Microelectronics from the Université de Sherbrooke.
His travels have led him to live in New Orleans, Montpellier, France, Montréal and Ottawa, Canada. He currently resides in Silicon Valley where he works as a digital design engineer for a leading semiconductor manufacturer. In his spare time, he enjoys snowboarding, wakeboarding, kiteboarding and mushroom hunting.
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