Every puzzle in this book was selected to give you the greatest challenge and the most fun. They will twist and test your logic, challenge your IQ, stump your eyes, and force you to think harder than you ever have before to solve them. The BrainSnack ® brand guarantees to train your brain, enhancing logic, imagination, creativity, and memory. This vibrant and appealing collection serves up a huge range of visual and verbal conundrums, from grids and pixel fun to concentration exercises and continuous line challenges.