Codewords have been one of The Telegraph's most successful puzzles since their introduction to the paper in summer 2003. The principle is simple: the unsolved grid shows squares containing numbers, each of which corresponds to a letter of the alphabet. Between two and five solved letters are given, and the remainder must be discovered through a combination of logic and word power. This collection contains 150 brand new puzzles, and is the most extensive on the market. Be the first to crack the code!