How to play Diagonal Sudoku
Also called Sudoku X. The two long diagonals are shaded and follow the same rule as rows and columns, which gives you extra clues.
The rules
- Each row, column and 3×3 box contains 1 to 9 once.
- Both long diagonals (corner to corner) also contain 1 to 9 once.
- Every puzzle has exactly one solution.
Watch an example
Here is a small Diagonal Sudoku puzzle being solved one step at a time. Press Play, or use Back and Next to go at your own pace.
Press Play to start.
Playing on LogicBright
Play exactly like Sudoku, but remember to check the diagonals too.
The center cell is on both diagonals, so it is often a good place to look.
Use Notes and Hint just like in Sudoku.
Tips
- Check the diagonals early: they often hide a single.
- The center box touches both diagonals.