The New York Post presents a collection of 150 fiendishly tough Su Doku brain teasers for dedicated fans of the utterly addictive number-placing puzzles.
The official utterly addictive number-placing puzzle
Look out: these Fiendishly tough puzzles are pure evil. Don't say we didn't warn you. More than just hours of entertainment, Su Doku engages your mind, improves your concentration, and helps you stay mentally fit. If you can make it through these 150 brand-new puzzles, you'll be an indisputable Su Doku master.
