A visually appealing wide ranging collection of brain teasers. Puzzles are graded according to difficulty & divided into groups according to their subject matter. For example groups include: 'curves & circles' 'logic & probability' & 'science'. Within minutes it is obvious that large chunks of lateral thinking are an advantage & sometimes the answer is not what you think. With 1000 puzzles in all it adds up to a surprisingly gripping & rewarding pursuit.