Calm, thoughtful Sudoku practice.
A quiet 9×9 board, four honest difficulties and hints that teach. No accounts, no noise — just you and the next deduction.
Daily Sudoku
One puzzle a day, the same for everyone — casual, no ranking.
Progress on this device
Your games, streak and difficulty mix stay local to your browser.
Explained hints
Nudges that name the technique instead of handing you the answer.