Fill the grid so each row, column, and 3×3 box contains 1–9.
Keyboard shortcuts when playing: 1–9 to set digits, Backspace/Delete to erase, N to toggle notes, H for a hint, U to undo, P to pause. Arrow keys to move selection.
00:00
notes off
Completed
You finished …
High Scores
Date
Difficulty
Time
Stored locally in your browser.
Settings
Statistics
Stats coming soon
Info
This is a small Sudoku built with no libraries. Puzzles are generated by shuffling a solved base grid and removing cells based on difficulty. No server. Your times save locally.