If you love classic logic puzzles, you know how hard it is to find good ones. Thankfully, the folks at mental floss- the popular trivia magazine- have come to the rescue with a top-notch book of 72 puzzles that will flex your logical reasoning to the max. Each puzzle comes with a grid to mark your deductions, so put on your thinking cap and start solving. And don't worry if you have to erase your answers, the high-quality paper won't rip.