Sudoku (soo-doh-koo): a 9x9 logic puzzle to superheat the very core of your brain and to challenge your numeracy, spacial awareness and problem-solving abilities.
WARNING: the five levels of Penguin Sudoku Challenge: Volume 2 may leave you smugly grinning, scratching your head, sighing deeply, snapping your pencil - and you may even throw your book at the wall.
But you also have permission to frame your most difficult completed 9x9s.
Good luck!
David J Bodycombe is a puzzle author and games consultant based in London. In the UK, over two million people a day read his puzzles, and internationally his work is syndicated to over 180 newspapers. He also consults on many television gameshows, including hits such as The Crystal Maze and Treasure Hunt. He has written and edited over twenty books including The Mammoth Book of Brainstorming Puzzles, How to Devise A Game Show, Number Crunchers and Visual Vexations. He qualified in mathematics from the University of Durham and currently lives in Surrey.
