Charge up your cognitive power with the challenging conundrumscrammed into Brain Boosters: Challenging Puzzles. This selection ofover 200 illustrated, full colour puzzles has been designed to helpexpand your brainpower no matter how much free time you've got tospare. There's a plethora of problems including Sudoku, logicsequences, riddles, Latin squares, visual teasers, maths challengesand more. Exercise your mind whether you've got just five minutes or an hour, with puzzles growing slowly from moderate to taxing in difficulty. Whosaid exercise couldn't be fun? | Challenging Puzzles by Matthew Donegan, Mass Market Paperback | Indigo Chapters