mental_floss Sudoku- It's the Brain Candy You've Been Craving! by Frank Longo in Bloomington, MN

Sudoku super-master Frank Longo and mental floss, the magazine for trivia lovers, bring fans a collection of superb puzzles sure to stimulate the brain. Longos puzzles are always top-notch, and because these increase in difficulty as the book goes along, they're perfect for helping solvers build their skills.