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, theyre perfect for helping solvers build their skills.
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, theyre perfect for helping solvers build their skills.
