Play Sudoku on Codebloc – Game rules, global rankings, and challenges

Sudoku game screenshot
  • Lives3

Leaderboard

See how you rank among the best players!

Challenge

Complete all steps to unlock the Sudoku badge.

Sudoku

  1. 4 levels completed0%
  2. 8 levels completed0%
  3. 12 levels completed0%

About Sudoku

Sudoku is a logic-based number puzzle that rewards patience, deduction, and precision. Each grid presents a fresh challenge that requires focus and systematic thinking to solve. It’s a calm yet stimulating way to train your mind and enjoy the satisfaction of bringing order to complexity.

How to play

  • Objective: Fill a 9x9 grid with digits so that each column, each row, and each of the nine 3x3 sub-grids contains all digits from 1 to 9.
  • Game setup: The game is played on a 9x9 grid. Some cells are prefilled with digits.
  • Gameplay:
    1. Select an empty cell, then choose a digit from 1 to 9.
    2. You cannot change cells that are not empty.
    3. A correct digit respects the Sudoku rules for row, column, and 3x3 sub-grid.
  • Scoring: You earn points for each correct digit placed. Mistakes reduce your score.
  • Winning the game: You win once the entire grid is correctly filled.
  • Game over: The game ends when you make 3 mistakes.

Game levels

Sudoku features 12 levels of increasing difficulty. You unlock the next level by completing the current one. The higher the level, the more points you can score. Complete all levels to win a badge!

Note: You'll need a Codebloc account to save your progress.

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