Book excerpt: No fewer than 1001 mind-bending puzzles have been specially created for this book. From quick puzzles that will take a couple of minutes to logic problems that will need hours of work, each puzzle is graded into three levels of difficulty. Attractively presented in full color, the book includes picture puzzles, mazes, math tests, lateral thinking and visual reasoning puzzles, plus spatial problems. This is a cornucopia of conundrums that includes a special selection of tsunami puzzles by a famous japanese puzzle constructor that will have you racking your brain for hours.