Sudoku X (Daily Mail)
Sudoku with an extra rule: both long diagonals hold 1 to 9 too.
Every day: One dated Sudoku X a day, the same for every reader. New puzzle: Once a day; the start screen shows the date.

Sudoku X is the Daily Mail's daily diagonal sudoku. Besides every row, column and box, the two long diagonals must also hold the digits 1 to 9 once.
About Sudoku X (Daily Mail)
Sudoku X is one of about thirty puzzles on the Daily Mail games page, free in the browser with ads. Each one opens on a start screen that carries the day's date, and every reader gets the same puzzle that day.
Sudoku X keeps every rule of classic sudoku and adds one: the two main diagonals of the 9x9 grid must each contain the digits 1 to 9 exactly once as well. The extra constraint gives new ways in, especially through the centre square, which sits on both diagonals.
The puzzle opens behind the Daily Mail's consent screen, where you either accept personalised ads or buy an ad-free subscription. It suits readers who like a sudoku x with their news and want a fresh one every day.
How to play Sudoku X (Daily Mail)
- Open Sudoku X on the Daily Mail games page.
- Fill the empty squares with digits from 1 to 9.
- Keep every row, column and 3x3 box free of repeats.
- Make both long diagonals hold 1 to 9 too.
Tips
- Check the diagonals early: they often force a digit that the rows and boxes alone would not.
- The centre square belongs to both diagonals, so its candidates narrow quickly.
Questions
Is Sudoku X on the Daily Mail free?
Yes. It is free in the browser with ads; the site also offers an ad-free subscription.
How often is there a new puzzle?
Every day. The start screen shows the date, and every reader gets the same puzzle.
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