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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...