Compiled by the editor of The Times crossword, this assortment of crossword puzzles promises endless entertainment. Initially published just four times a year on holidays, The Times crossword has appeared on a weekly basis since 1997. The larger grid (27 x 27 squares) creates great challenges for long words and phrases, adding an additional level of diffficulty to the original 15 x 15 layout and a new element of challenge to completing each crossword.