Sudoku
Daily and unlimited sudoku, four difficulties, with a timer and a leaderboard.
Game Settings
Hard
Today's puzzle is Hard for the whole office — same grid, same level, one board. Switch to Free play to choose your own.Arrow keys move, 1–9 place, Backspace erases, Ctrl+Z undoes.
The Grid
Setting up a puzzle…
Progress
Office leaderboard
Daily · Hard
Loading the board…
Fastest times first. Times are posted by the browser at the end of a puzzle, so treat the board as a bit of fun.
Points come from where you finished on each day's board, not from your times — there is one Sudoku board a day, the same Hard puzzle for everyone, and free play never counts at all. Days played before the daily became a single puzzle carried a board per difficulty; on those, only your best placing counted, never the sum. Times are posted by the browser at the end of a puzzle, so treat the board as a bit of fun.