Sudoku: Classic Offline Puzzle

Sudoku puzzle game with classic 9×9 grids, a daily sudoku challenge and five difficulty levels. Play offline sudoku anywhere: on a plane, on the underground, with no signal at all.

No account and no subscription. Just classic sudoku, a pencil and your logic.

HOW TO PLAY
• Fill the grid so every row, every column and every 3×3 box holds the digits 1 to 9 exactly once.
• Tap an empty cell, then a digit. Its row, column and box light up, and cells with the same digit are ringed.
• Not sure yet? Turn on Notes to jot down candidates. Long-press Notes to fill in every candidate at once.
• A wrong digit turns red. Three mistakes end the game, unless you switch the limit off in settings.
• New to sudoku? A short interactive tutorial solves your first puzzle with you, step by step.

FIVE DIFFICULTIES, ENDLESS SUDOKU PUZZLES
Every sudoku puzzle is generated fresh on your device and checked to have exactly one solution, so logic alone always gets you there and you never see the same grid twice.
• Easy: 45 numbers given, a relaxed brain teaser
• Medium: 36 numbers given
• Hard: 30 numbers given
• Expert: 26 numbers given
• Master: only 23 numbers given, a genuine challenge

A DAILY SUDOKU, EVERY DAY
The daily challenge gives everyone the same puzzle each day, and it gets harder through the week: an easy Monday, a Master-level Sunday. A calendar tracks your run and a trophy marks every month you complete. Missed a day? Go back and play it later; the month is still within reach.

FEATURES
• Pencil marks, with one long-press to fill in every candidate
• Unlimited undo and an erase button
• Hints that fill in one correct cell, after a short video you choose to watch
• Highlighting for rows, columns, boxes and matching digits; a digit used nine times fades out
• Classic three-mistake limit, or unlimited mistakes
• Timer with pause; the board hides while paused
• Auto-save: leave mid-puzzle and pick up exactly where you were
• Best time and wins for every difficulty, plus a daily win streak
• Light and dark themes, and a colour-blind mode with blue and orange highlights

AFTER EVERY WIN
See how this solve compares to your own average and best time, whether you solved it without hints, and how many puzzles you have finished today.

OFFLINE SUDOKU, NO ACCOUNT
Puzzles, including the daily sudoku, are created on your device, so the whole classic sudoku experience works with no internet. Your progress and statistics are saved on the phone and no sign-up is needed.

FREE, SUPPORTED BY ADS
The game is free and paid for by ads. Hints and second chances are optional videos you choose to watch.

Remove Ads is one payment, no subscription. It turns off banners and full-screen ads for good; the optional videos stay there if you want a hint.

Available in English, German, Turkish, Spanish, Portuguese (Portugal and Brazil), French, Italian, Russian, Polish, Indonesian, Japanese and Korean.