The Official Utterly Addictive Number-Placing Puzzle
The season for fun--and Su Doku--has arrived! You're sure to get spring
fever with these all-new Fiendish puzzles for loyal Su Doku fans. More
than just hours of entertainment, Su Doku engages your mind, improves
your concentration, and helps you stay mentally fit. With 150 brand-new
puzzles to complete, you'll become a Su Doku master in no time!