Sudoku
Nine rows, nine columns, nine boxes, one solution. From gentle singles to Expert trials.
Free to play · Right here in your browserCommunity leaderboard
Best fastest solves, shared by players. Lower is better.
Nine rows, nine columns, nine boxes, one solution. From gentle singles to Expert trials.
The number puzzle everyone knows, on a crisp board that fits any screen. Fill the grid so every row, every column and every 3×3 box holds the digits 1 to 9 exactly once. Every puzzle has exactly one solution. The four difficulties are graded by the techniques a puzzle actually needs. Easy falls to singles. Medium needs pointing pairs, box-line reduction and naked or hidden pairs. Hard calls for triples, X-wings, swordfish and XY-wings. Expert can't be finished without a trial: assume a candidate, follow it, and watch it break. Pencil in notes and they tidy themselves as you place digits. Clashes turn red, matching digits light up, and undo goes all the way back. A hint fills one cell with the next logical step. Pause hides the grid, and fresh puzzles can count for the Plocky leaderboard.
Progress and preferences stay in this browser. Opening the game in another browser or device starts fresh.
How to play
- Click / tap
- Pick a cell, then a digit on the pad
- Arrows
- Move between cells
- 1–9
- Write a digit
- Shift + 1–9
- Write a pencil note instead
- N
- Notes mode on or off
- Backspace / 0
- Erase the cell
- U / Ctrl+Z
- Undo
- H
- Hint (the puzzle becomes practice)
- P
- Pause and hide the grid
Tap a cell, then tap a digit on the pad. Turn on Notes to pencil in candidates. Undo, Erase and Hint sit above the digits; Pause, New puzzle and Settings are in the top bar.
