Fully illustrated in colour here is a bonanza of mazes word games visual & logic puzzles & more. With a full range of difficulty but all totally solvable the puzzles are not meant to be tests. In fact they're engaging & humorous as fun to work on as they are satisfying to solve. In Gray Matter readers first solve a short crossword then use the letters in the puzzle to crack a riddle. Hot Lines involves matching kids to their clothing- based on tan lines. Flea Circuit is an unusual maze that you find your way out of by jumping around the page like a flea. A scavenger hunt runs through the book solve every puzzle to amass the clues & earn the bound in certificate of achievement.