New York Post Apprentice Su Doku: Medium

The official utterly addictive number-placing puzzle

Give your brain a workout with these all new Easy- to Medium-level puzzles. These entertaining puzzles offer more than just hours of fun—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!