Welcome to the challenge of recreational mathematics. Puzzles are good for you! The general consensus amongst scientists is that mental exercise improves mental performance. 'U-can-do' puzzles and problems have been designed to give your brain the necessary mental exercise. They will stimulate your thinking process while improving your concentration, IQ and consequently, your self-esteem. For the young, the puzzles will develop your logical reasoning and problem solving skills. For the more mature puzzler, the exercises will protect against brain deterioration - the 'use it or lose it' theory. Irrespective of age, there are challenges for everyone. For further enjoyment, math quotes, facts, humour, anagrams and other special features are included throughout the book. A teacher once told me, "If at you first don't succeed, keep trying. Success does not come without failure but failure comes by not trying". So with this in mind, put on your thinking cap, take the challenge, don't give up and you will enjoy the positive results! Need help? There are hints/suggestions throughout the book and solutions, answers and relevant supporting mathematical information in the back pages. As an extra bonus there is an associated puzzle website available, www.gordonburgin.com.