Free Online Sudoku Puzzles
Play Classic Sudoku and explore Samurai, Jigsaw, Diagonal, Twin and Double Sudoku, free in your browser. Every puzzle type comes in easy, medium and hard, and each puzzle has exactly one solution.
Choose Your Challenge
Classic Sudoku
Twin Sudoku
Samurai Sudoku
Jigsaw Sudoku
Diagonal Sudoku
Double Sudoku
About Sudoku Shrine
Sudoku Shrine brings classic Sudoku and creative multi-grid challenges together in one quiet place. Play without an account, use notes and hints, and return to progress saved in this browser.
AboutFrequently Asked Questions
Is Sudoku Shrine free?
Yes. The puzzles in the library are free to play in your browser, with no account required.
What is Samurai Sudoku?
Samurai Sudoku combines five 9×9 grids. A central grid shares a corner box with each of four outer grids, and each shared box must satisfy both grids.
What is the difference between Jigsaw and Classic Sudoku?
Classic Sudoku uses nine square 3×3 boxes. Jigsaw Sudoku replaces these with nine irregular regions of nine cells. Both use the digits 1 to 9 once in each row, column and region.
Can I play on my phone?
Yes. Tap a cell and use the on-screen number pad. Wider overlapping boards can be scrolled sideways, and your progress stays saved in the same browser.