Book excerpt: DIVDIV Compiled by the editor of London's The Times crossword, this original compilation will challenge even the most experienced crossword buff. With unique grids of 23 x 23 squares larger than the standard 15 x 15 grid these puzzles require serious word power and brain bending, and are the perfect quizzes for those looking to test their linguistic prowess to its limit. Initially published just four times a year on holidays, The Times crossword has appeared on a weekly basis since 1997.