No fluff. One grid, the fastest pen wins.

Classic 9x9 sudoku turned into a race. Everyone digs into the same grid and a cell belongs to whoever inks it correctly first. Right digits score and build streaks; wrong ones cost points, freeze your pen for eight seconds and burn one of your three strikes. Three strikes and your score freezes while the rest race for what is left. When the grid closes, the highest score wins.

2 to 4 players
Ranked rating, never reset
Party by five-digit code

Get it onGoogle Play

Coming soon toApp Store

See the leaderboard

NewPuzzle race

Something to prove

The board is open.

Ranked, never reset. One rival online, or up to four friends, on one shared grid; a cell belongs to whoever inks it first.

See the full leaderboard

The boardGlobal ranked rating

Example

1Peregrine1,842
2Dex1,663
3Quill1,654
4Hazel1,455
5RiverRat1,446

Full leaderboard

How to play

Three moves and you are in.

01
Tap a cell, then tap a digit. Right, and it locks in your colour and scores in front of everybody.
02
Wrong, and you lose fifteen points, your streak breaks, your pen freezes for eight seconds and you take a strike.
03
Hold the highest score when the grid closes. Ties go to fewer strikes, then to whoever got there first.

What makes it Just Sudoku

The details that make the game.

One shared grid, so every cell a rival claims makes the puzzle easier for everybody
Three strikes and your pen goes down: guessing is a losing strategy by design
A correct cell pays ten, and a hot streak takes that up to twenty
A wrong digit costs fifteen points and freezes your pen for eight seconds
Pencil notes are private, cost nothing, and nobody else ever sees them
Standing still is not safe either: a long idle costs a strike too

Real people, one tap away.

One rival online, or up to four friends, on one shared grid; a cell belongs to whoever inks it first.

Quick play
One button. Tap it and we match everyone searching right now, then build the room with two to four players. Cancel any time before it starts.
Ranked duel
One rival close to your rating. The result moves a rating that is never reset.
Play with friends
Open a party and read out the five-digit code, or tap a friend on your list and they land in your party with nothing to type.
Friendly: no rating on the line.
The host picks the match: Duel, Trio, Quad, Fiendish.
Tutorial and practice
A playable tutorial and a solo practice table, both open the moment you install, no account needed. Practice opponents are labeled AI.