"Keep your mind fit with brain aerobics!"If you like great mental exercises, try brain aerobics. All you have to do is open this book, lift a pencil, and flex your mind while solving this assortment of invigorating puzzles. In "Brain Aerobics Wordoku 2," you'll need to combine logic with wordplay skills to succeed. Wordoku is the same as sudoku, except letters are used instead of numbers. Plus, when the puzzle is correctly solved, a nine-letter word will appear somewhere in the grid!