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Robert Allen was a highly experienced puzzle setter for Mensa and Consultant Editor for Carlton Books' puzzle series. He wrote, edited and contributed to hundreds of puzzle and game books of all shapes and sizes.

There are logic puzzles, visual and spatial teasers, crafty conundrums and all sorts of posers to help you exercise your brain and achieve your maximum mental potential! The book is divided into three sections, all crammed full of easy, medium and tough puzzles to suit even the most dedicated puzzle fan. All the answers are included in case you get stuck as you work your way through an amazing variety of superb quality puzzles.