Attempt limit
Each tournament limits the total number of result submissions; only the best games up to the scoring-slot limit count toward the total.
Sudoku Tournaments
In progress
Weekly Classic Cup #38
Complete 100 Sudoku games.
Ends in
00Date
00Hours
00Minutes
00Seconds
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60/60 tournament attempts remaining for score submission.
Weekly Classic Cup #38
Difficulty
Error
0 / 3
Time
00:00
Score
1.400
Scoring
Weekly Classic Cup #38
60 tournament attempts remaining. A valid completed game will be submitted to the leaderboard.
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9×9 Sudoku board. Use the arrow keys to move between cells; Home and End go to the start or end of a row; Ctrl or Command + Home/End goes to the first/last cell on the board. Keys 1–9 enter a digit in the current mode; Shift + 1–9 adds a quick Note without turning Notes on; 0, Delete, or the numpad decimal key clears a cell; N toggles Notes, A toggles Auto Candidates, and Space pauses the game.
Smart hints
Classic Sudoku · 3 levels
1–3
Levels 1–2 only guide you and do not use a hint; level 3 applies the solving step and uses 1 hint.
Tap to enter · press and hold to add a NotePress 1–9 to enter · Shift + number for quick Pencil marks
Select an empty cell to see valid candidates.
Sound & controls
Auto candidates and Notes mode are remembered separately for Classic and Killer. Pause state and game progress are not synced as preferences.
Live standings
View overall standings
Tournament leaderboard
No players have scored yet
The leaderboard will appear as soon as the first eligible game is recorded.
Tournaments are designed to be fairer
Skill score
Higher difficulty gives a larger base score; mistakes, hints, and time all affect the result.
Secure result submission
Each attempt is verified against the player and game ID; resubmitting or clicking repeatedly cannot award points twice.