hard Diagonal Sudoku Rules
Start your next hard Diagonal Sudoku online.
- Sudokus available
Difficulty
Hard
Variant
Classic + Diagonal
Presets
para guardar tus modos de juego favoritos
- Sudokus available
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Start your next hard Diagonal Sudoku online.
Diagonal Sudoku completion rate
74%
Available Diagonal Sudoku difficulty levels
4
Diagonal Sudoku games played today
0
New Diagonal Sudoku puzzles this week
0
Open the Academy lesson for Diagonal Sudoku examples before you start.
Total Sudoku games played
1,600+
Available Sudoku variants
22
Playable Sudoku pages
4M+
Sudoku Academy lessons
3+
Start by looking at the diagonals and identifying cells that are already heavily restricted by rows, columns or boxes.
The centre cell belongs to both diagonals, making it one of the most influential positions in the puzzle.
The extra rule adds more restrictions, but it also creates more opportunities for deduction. Some players find it easier, while others find it more demanding.
Variants such as Thermo Sudoku, Arrow Sudoku or Skyscraper Sudoku introduce different types of restrictions while keeping the familiar Sudoku grid.
The most common mistake is forgetting that a placement must satisfy the diagonals as well as the normal Sudoku rules.