This all-new collection of connect-the-letters puzzles will help improve your critical thinking skills, build your vocabulary, and bring you hours of fun. With skill levels ranging from "Easy" to "Einstein," this book is sure to please puzzlers of all ages. The concept is simple: We provide a grid full of letters, and you have to make as many words out of them as you can. You can go up, down, across, backward, and even zig-zag. And just to boggle your brain, the BRItechnicians have come up with an extra-challenging section of THREE-DIMENSIONAL puzzles!