Multiplayer Sudoku, live against real people
Sudoku Clan turns Sudoku into a real-time game. Get matched with a player at your level in seconds, or play bots that solve like people while you warm up.
Find a match →Free · no download · works on any phone or computer
Five ways to play Sudoku together
Every mode uses classic 9×9 Sudoku rules, so there is nothing new to learn. What changes is who you play with and how you win.
Fair, logic-only puzzles
Every puzzle has exactly one solution and can be solved without guessing. Both players always get the same puzzle at the same difficulty, so the better solver wins.
Ranked, with leagues
Each mode has its own rating. Climb from Bronze to Grandmaster, earn trophies, and unlock avatars, reactions and board themes on the Trophy Road.
How a multiplayer Sudoku match works
Pick a mode and tap Quick match. The game looks for a player in the same mode at a rating close to yours. When one is found you both see the same board at the same moment, and the match starts after a short countdown.
Everything during a match happens live. You see your rival's progress as they fill cells, attacks land on your board with a warning, and in the shared-board modes their digits appear on your screen as they are placed. If your connection drops, the game holds your seat for 30 seconds and puts you straight back into the match when you return.
Which mode should you play first?
- Clash if you like speed. It is a straight race on the same puzzle, with powers to slow your rival down. Matches last 4 to 6 minutes.
- Duel if you like to think. It is turn-based, and a digit found with harder logic scores more.
- Territory if you like strategy. Both players claim cells on one board, and where you play matters.
- Battle Royale if you have a group. Up to eight players, and the slowest are knocked out each round.
- Split Sight if you would rather work together. It is co-op, and neither player can solve it alone.
Fair matches
Both players always get the same puzzle, so nobody is handed an easier board. Every puzzle has exactly one solution and can be solved without guessing. Ratings are kept separately for each mode, so being strong at racing does not push you into hard matches in a mode you are still learning.
New players can practise every mode against bots first. The bots solve like people do, at a pace set to your level.
What you need to know before your first match
Only the classic rules: each row, column and 3×3 box holds the digits 1 to 9 once. If you are new to Sudoku, read how to play and try an easy puzzle first. If you want an edge, the technique guides cover everything from scanning to X-Wings, and the tips page is about solving faster.
See how Clash works
You and your rival get the same puzzle, and the first to fill it in correctly wins. Every row, column or box you finish charges energy, and energy buys attacks that mess with your rival’s board.
Watch the Clash demos →Questions
Is multiplayer Sudoku free?
Yes. Sudoku Clan is free to play in your browser on a phone or computer, with no download and no sign-up. You only pick a display name when you play online.
How does matchmaking work?
Quick match pairs you with a player of the same mode and difficulty. If nobody is around, you can play bots that pace themselves like a person at your level.
Can I play Sudoku against a friend?
Yes. Create a private room and share the 6-letter code or the link. Your friend taps it and the match starts.
Which Sudoku multiplayer modes are there?
Clash (race the same puzzle), Territory (claim cells on one shared board), Duel (turn-based), Battle Royale (up to 8 players, the slowest are knocked out) and Split Sight (co-op).
Do both players get the same puzzle?
Yes. In every mode, everyone in the match plays the same puzzle at the same difficulty.
What happens if I lose connection during a match?
Your seat is held for 30 seconds. If you come back in that time you carry on where you left off.
Is there a ranking system?
Yes. Each ranked mode has its own rating, with leagues from Bronze to Grandmaster.