Stay sharp with these perfectly addictive puzzles that challenge you to solve for "?" using genius logic--but only grade school arithmetic. Once you match wits with area mazes, you'll be hooked! Originally invented for gifted students, these novel puzzles have taken all of Japan by storm. The Big Puzzle Book of Area Mazes follows our two travel-size volumes with 300 all-new puzzles--including 100 3D puzzles, seen here for the first time! Each tangle of rectangles--or cache of cubes--dares puzzler-doers to find a missing value through spatial reasoning. The only math knowledge you need is that length × width = area. No hard math is allowed--fractions, begone! If you're a sudoku fanatic, or if you play brain games to stay sharp, or if you love geometry (or you want to finally show it who's boss)...then feed your mind some area mazes. They could be just what you're craving!