🧩 Sudoku

🧪 THEORY MODE - Test your hypothesis without penalties!

Auto-check answers

⏱️ 00:00

❌ Mistakes: 0/3

💡 Hints: 3

⏸️

Game Paused

Keyboard Shortcuts: 1-9: Enter number
N: Toggle notes
Arrows: Navigate
Delete: Erase
Ctrl+Z: Undo
T: Toggle Theory Mode

🎉

Congratulations!

You completed the medium puzzle!

Time: 00:00 | Mistakes: 0

💡 Hint

Naked Single

No logical technique found with your current notes. Try filling in more notes or use the button below to auto-fill all possible candidates.

📋 Apply Theory Board?

You are about to apply all changes made in Theory Mode to your actual game board.

Note: Any numbers that conflict with Sudoku rules or are incorrect will be counted as mistakes.

📋 Check Results