Sudoku Classic: Learn & Play

Enjoy classic Sudoku at your own pace—and learn the logic behind every move. Sudoku Classic: Learn & Play combines unique-solution puzzles with guided lessons, smart hints, daily challenges, technique drills, a visual solver, and personal progress.

Choose from Easy, Medium, Hard, Expert, and Master puzzles. Keep the board clear with corner and center pencil marks, Auto Notes, undo, erase, multi-select, conflict checking, and optional Auto Complete. Turn on Challenge Mode for a three-mistake limit, or Focus Mode to hide the timer and pressure details.

Build real solving skills through 20 guided lessons, worked examples, practice puzzles, and Drill Mode. Start with Sudoku rules, scanning, and pencil marks, then progress through naked and hidden singles, locked candidates, pairs, triples, X-Wing, Swordfish, XY-Wing, Skyscraper, remote pairs, unique rectangle, XY-chains, and finned X-Wing.

Stuck on a puzzle outside the app? Enter it manually, take a photo, or choose an image on Android. The on-device Sudoku Solver can analyze the grid and play back logical solving steps.

Play a new Daily Challenge by date, return to unfinished games, explore the archive, and build streaks. Your profile records wins, times, stars, perfect games, no-hint wins, lesson progress, Drill performance, daily streaks, and achievements. Build a collection of unlockable themes and choose the look that suits you.

Designed for comfortable classic Sudoku:
- Unique-solution puzzles
- Five difficulty levels
- Daily Challenge with calendar, archive, and streaks
- 20 guided lessons plus technique drills and assessments
- Logical hints that explain the next step
- 45 Distinct themes
- Sudoku Solver with manual or photo input and step playback
- Corner notes, center notes, Auto Notes, multi-select, undo, and erase
- Stats, achievements, and unlockable themes
- Focus Mode, reduced motion, sound, haptics, and accessibility-friendly settings
- Progress saved locally on your device with no account required

Whether you are learning your first pattern, practicing a difficult technique, or settling into today's challenge, Sudoku Classic: Learn & Play keeps the board clear, the rules classic, and the progress personal.