Classic Sudoku, built from the ground up for mobile. Solve unlimited handcrafted boards across Easy, Medium, and Hard tiers, chase the daily challenge for streak bonuses, and compete on a global leaderboard. Pencil marks, mistake detection, hints — all the features you expect, plus a few you'll wonder how you lived without.
What to expect
Unlimited Boards
Fresh puzzles generated on device. Never repeat a board, never run out of content.
Daily Challenge
One puzzle a day, same board for every player. Maintain your streak — earn freezes to cover the occasional miss.
Three Difficulties
Easy, Medium, and Hard tiers tuned to real solve times so beginners ramp and experts stay engaged.
Pencil Marks & Hints
Toggle notes mode to pencil in candidates. Stuck? A targeted hint reveals just enough to keep you moving.
Speed Run Mode
Bare-bones variant with no hints or undo. Set a personal best, climb the speed-run leaderboard.
Personalized Themes
Standard, Sepia, AMOLED black, and high-contrast accessibility variants. Your Sudoku, your vibe.
How to play
Fill the 9×9 grid
Every row, every column, and every 3×3 box must contain the digits 1–9 exactly once. No repeats.
Use logic, not guesses
Start with the rows, columns, or boxes that have the most givens. Work out which number can only go in one spot, then move on.
Pencil in candidates
When multiple values are possible for a cell, toggle notes mode and pencil them all in. As more cells fill, candidates narrow to a single digit.
Solve without mistakes
The board validates moves as you play. Three mistakes ends the game — slow down and use hints sparingly to keep your streak alive.
We're putting the finishing touches on Pocket Sudoku. Get notified when it launches.