The Time Su Doku Book 9 [Paperback]

The most addictive puzzle craze since the first crosswords were published, the ninth installment of Times Su Doku feeds the desire of puzzlers for yet more challenges. This collection of the wordless puzzle will put readers' logic to the ultimate test, and improve mental agility, 20 Mild puzzles for beginners, 50 Difficult puzzles for the slightly brave, 50 Fiendish puzzles for the extra brave, and for those gluttons for punishment who like their puzzles Super fiendish, 30 challenges.