The Sunday Times Puzzle Books - The Sunday Times Cryptic Crossword Book 4: 100 Challenging Crossword PuzzlesOur language, with its tens of thousands of words, intricate grammatical construction and quirky idiomatic phrases, has proved an almost inexhaustible source for cryptic clues. Foreign words are constantly being absorbed into our language, into our dictionaries and then into crossword puzzles. All the puzzles are set out in an easy to use, double page spread to view layout, with all the solutions clearly laid out at the back of the book.