About the Game

Sudoku is the world's most popular number puzzle. Fill a 9x9 grid so that every row, column, and 3x3 box contains the digits 1-9 without repetition. LUDOCCA offers classic solo mode and competitive multiplayer.

Basic Rules

1. 1The grid is 9x9, divided into nine 3x3 boxes.
2. 2Some cells are pre-filled with numbers as clues.
3. 3Fill empty cells with digits 1-9.
4. 4Each row must contain all digits 1-9 without repeating.
5. 5Each column must contain all digits 1-9 without repeating.
6. 6Each 3x3 box must contain all digits 1-9 without repeating.
7. 7In classic mode, you have 3 lives — each wrong answer costs one.
8. 8In competitive mode, race against other players to finish first.

Frequently asked questions

How do you play Sudoku?

You can play Sudoku right here in your browser: open a public table on this page or invite friends to a private room, and the board updates live for everyone as turns are taken. The numbered list above walks through the 8 core steps — setup, turn order, legal moves and how a round ends. You can also practise against bots first, then switch to real opponents whenever you want.

How many players can play Sudoku?

1-4 players

Is Sudoku free to play on LUDOCCA?

Yes. Sudoku is free to play on LUDOCCA. Create an account, join a public room, or invite friends to a private match — no download required.

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