Skip to content
CCM Tools

Sudoku

Daily and unlimited sudoku, four difficulties, with a timer and a leaderboard.

Game Settings

Mode
Daily builds the same grid for everyone from today's date — one puzzle, one board. Free play rolls a new one every time and lets you pick the level.
Difficulty

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

0
Score
00:00
Time
0
Hints used
Cells filled 0%

Office leaderboard

Daily · Hard

Period

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.