Charge up your cognitive power with the challenging conundrums crammed into Brain Boosters: Challenging Puzzles. This selection of over 200 illustrated, full colour puzzles has been designed to help expand your brainpower no matter how much free time you've got to spare. There's a plethora of problems including Sudoku, logic sequences, riddles, Latin squares, visual teasers, maths challenges and more.

Exercise your mind whether you've got just five minutes or an hour, with puzzles growing slowly from moderate to taxing in difficulty. Who said exercise couldn't be fun?