Nine digits. One rule. Fill the grid.

Every row, column and 3×3 box holds 1–9 exactly once. Pick how you want to play — the grid is the same, the pressure isn't.

Solo · Duel · Daily Pencil marks & notes Global daily grid

Choose your modeTap a card to jump straight in.

Difficulty · applies to every mode

1Scan the gridFixed clues anchor every row, column and 3×3 box — start from the crowded units.

2Place what you knowTap a cell, tap a number. Duplicates light up instantly so mistakes never stick.

3Pencil, then commitPencil in candidates with Notes, then commit when a digit is certain.

4Race the botIn Duel, you and GridBot split the empty cells — first side to finish its half wins.

Sudoku Elo ladderWins here feed the global ladder · weekly reset

Bronze

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Gold

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Diamond

Master