The Guardian has published Sudoku puzzle number 7,303, rated as hard. This classic number puzzle challenges solvers to fill a 9x9 grid so that every row, every column, and every 3x3 box contains the numbers 1 through 9 exactly once.
How to Access the Puzzle
The puzzle appears in the print edition of the Guardian. For those who wish to solve it on paper, a print version is available for download. The completed solution is not provided online immediately; instead, solvers must purchase the next issue of the Guardian to see the answer for puzzles published Monday through Thursday. Solutions for Friday and Saturday puzzles are given in either Saturday’s or Monday’s edition.
Tips for Solving Hard Sudoku
Hard Sudoku puzzles require advanced techniques beyond basic scanning. Consider using strategies such as:
- Cross-hatching: Look for numbers that appear frequently in rows and columns to narrow down possibilities in boxes.
- Hidden pairs and triples: Identify sets of numbers that can only appear in certain cells within a row, column, or box.
- X-Wing and Swordfish: Use pattern recognition to eliminate candidates across multiple rows and columns.
Patience and practice are key to mastering these puzzles. The Guardian's hard Sudoku is designed to provide a satisfying challenge for experienced solvers.
Where to Find Solutions
As noted, solutions are exclusively in print. For the puzzle published on a Monday, the solution appears in Tuesday's edition; for Tuesday's puzzle, in Wednesday's; and so on. Weekend puzzles have solutions in the following Monday or Saturday edition. Ensure you have access to the print newspaper to check your answers.
Explore more puzzles and features in the Life and style section of the Guardian.



