Difficulty: Hard
Play Hard Sudoku
Hard Sudoku is where the game truly turns into a battle of advanced mathematical graph theory disguised as a casual puzzle. With drastically fewer givens (around 24-26), these boards will force you to break logic deadlocks.
Who is this for?
- Veterans looking to test advanced logic formations.
- Those who have breezed through Medium and find it too predictable.
What to expect
- You absolutely must use detailed Notes/Pencil Marks on almost every cell.
- You will need to discover advanced logic setups like Naked Pairs, X-Wings, Y-Wings, and Swordfish to eliminate candidates.
- Average completion time: 20 to 60+ minutes.
Are you ready?
Select "Hard" difficulty in the Voku interface. Don't be afraid to use your Hint allowances if you become completely logic-locked.
Face Hard Sudoku