These books each contain 96 puzzle-packed pages, split into three levels of difficulty, called Super Brain, Mega Mind and Ultra Genius. The levels get considerably harder as the books progress and as kids improve their puzzle skills.

The variety of different types of challenges - numerical, logical and word - will test all areas of puzzle solving. All the answers can be found at the back of the books. Kids will have fun putting their brain to the test and seeing how many puzzles they can work out correctly.