GridRank

Play logic puzzles.
Solve. Rank. Create.

GridRank is a fun puzzle platform for playing Sudoku, Calcudoku, and other grid-based puzzles. Solve puzzles and see how you rank. Challenge friends to beat your time. Create new puzzles and share with the world.

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No credit card required. Fun for all ages.

Different play modes

Solo mode lets you play against the world. In duel mode you play agaist another player. In mirror mode you play against your past self, crazy right? Join a tournament and see how you rank against the other tournament players.

Accurate and detailed rankings

Solve puzzles and see how you rank. Global leaderboards, country leaderboards, age and gender leaderboards. Challenge friends to beat your times.

Create new puzzles

Become a puzzle designer. It's easier than you think. Share your created puzzles with friends. Get feedback as people around the world play the puzzles you create.

Sudoku

Learn the rules and basic strategies for this classic puzzle game.

How to play Sudoku →

Calcudoku

Learn the rules and basic strategies for this math-based puzzle.

How to play Calcudoku →

Killer Sudoku

Learn the rules and basic strategies for this puzzle that combines sudoku with addition constraints.

How to play Killer Sudoku →