Beguiling and gratifying, Su Doku is the mind-flexing way to pass free time. This handy pocket-sized Su Doku book is perfect for people who enjoy Su Doku in any setting: in the park, on the train, or on the go.

Part of The Times Su Doku series and compiled by the Number 1 Su Doku master Wayne Gould, Gem Su Doku Book 3 packs 100 puzzles into a neat and compact format.

Perfect to keep in your bag and on the move, this is a highly readable and easy-to-use gem of a gift.