Bud su doku, paperback/none

The Official Utterly Addictive Number-Placing Puzzle Spring has sprung Youll have more than just hours of entertainment with these all-new Difficult level Su Doku brain-teasing puzzles that are sure to please.

Su Doku engages your mind, improves your concentration, and helps you stay mentally fit.

With 150 brand-new puzzles to complete, youll become a Su Doku master in no time.