Hard Sudoku

Comment jouer

1. Fill every row, column and 3×3 box with the numbers 1 to 9.
2. Pencil in candidates with Notes, then look for pairs and patterns.
3. Each puzzle has one solution, reached by logic, never by guessing.

Commandes : Click or tap a square, then a number, or use the arrow and number keys

À propos de ce jeu

Hard sudoku is for solvers who have outgrown the basics. These puzzles start with only about 24 to 28 givens, and simple scanning gets you only a short way before the grid goes quiet. Play free sudoku hard puzzles online with the same tools you would use on paper: pencil notes, undo, error checking and hints when you need them.

• Réflexion
• Stratégie
• Ça cogite