Sudoku is a logic-based number puzzle where you fill a 9×9 grid so that each row, column, and 3×3 section contains the numbers 1-9 without repetition. Start with the easiest sections first, look for ...
Fill the grid so that every row, every column and every 3x3 box contains the numbers 1 to 9. To see the completed puzzle, buy the next issue of the Guardian (for puzzles published Monday to Thursday).