New York Post Guppy Su Doku: 150 Easy to Medium Puzzles (New York Post Su Doku (Harper))

These all new Easy- to Medium level puzzles are guaranteed to hook you! 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!