Zdoku

Zdoku is Sudoku the way it should be: free, quiet, and out of your way. No ads interrupting a solve. Nothing to buy. No account unless you want one. Three ways to play Zen — no scoring, no timer pressure, no account. Just a puzzle and as long as you like to finish it. Pause whenever you want. Leaderboard — the clock is running and your time is ranked against everyone else's. Four difficulties, each with its own board. Multiplayer — up to four players race on the same puzzle in real time. Every player has a colour, correct cells lock in as they are found, and you can see the board fill up as it happens. Create a room and share the code, or join a public one. Built for actually playing • Four difficulties: Easy, Medium, Hard and Expert • Pencil notes, including marking several cells in a box at once • Realtime feedback in Zen, or turn it off and check at the end • Twelve themes, from…