Extreme Sudoku: A collection of 200 of the toughest Sudoku puzzles known to man. (With their solutions.)
Antoine Alary was born and raised in Montréal, Québec, Canada. 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.