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This Month's Ranking
July 2026No scores yet this month — be the first!
How to Play?
Choose Your Level
Pick one of easy, medium, hard or expert levels.
Fill the Grid
Each row, column and 3x3 box must contain the digits 1-9 exactly once.
Use Hints
Stuck? A hint reveals the correct value of a cell; you can use up to 3 hints and each adds a time penalty (+2, +4, +6 minutes).
Climb the Ranking
The harder the level and the faster and cleaner your solve, the more points; your best score enters the monthly ranking.
Frequently Asked Questions
How are points calculated?
Your score is based on the base points of the chosen difficulty and your solving time. Each hint adds penalty minutes to your time (1st +2, 2nd +4, 3rd +6) and mistakes lower your score. A harder level and a faster, cleaner solve earn more points.
Do I need an account to play?
Anyone can view the leaderboard; to play and save your score, just sign in with your free Youthall account.
