300 Brain-Twisting Puzzles300 Brain twisting Puzzles is the perfect book for anyone who wants to test and challenge their mental powers. With hundreds of numbers, letters, words and visual conundrums of varying difficulty you can wrestle with problems of logic, grapple with baffling sequences and explore your lateral thinking skills. This book will entertain as much as it will exasperate and, finally, you may be astonished at how quickly you find yourself solving brain teasers