0in 0in 0pt">Those long, lazy days of summer can lull you to sleep and dull your brain. That’s why this book of number puzzles belongs in every beach bag! It’s full of challenging sudoku that puzzle fans will love. There’s an assortment of levels, so solvers will find the perfect one for whatever mood they’re in—a quick poolside poser, something harder while waiting for the burgers to cook, or a serious test for those sizzling summer nights. Created by sudoku master Frank Longo, these brain-teasers will keep the mind sharp all summer long.