Sudoku training that feels like a course

Master Sudoku step by step.

Sudoku Skills combines guided lessons, teaching walkthroughs, smart hints, What-If training, OCR import, saved progress, and visible achievement badges so every puzzle helps you become a stronger solver.

Preview Sudoku School Try a puzzle now Create a free account

Guided lessonsUnlock skills in order Teaching walkthroughsUnderstand every step OCR and What-IfPractice from real puzzles Badges and diplomaEarn visible progress

Your next breakthrough

Learn the move, not just the answer. Sudoku School turns each puzzle into a coached practice session with smart hints, notes, and replay tools that help the logic click.

Badges to diploma

Build from first wins to candidate logic, branching, famous puzzles, and What-If mastery as every badge moves you closer to the Sudoku School Diploma.

Why it feels different

Not just a solver. A training room for your Sudoku brain.

The strongest parts of the app are right up front: a guided School path, solver explanations, your own replayable solving history, spoiler-free hints, What-If exploration, OCR scanning, stats, saves, badges, and a diploma goal.

Sudoku School

Follow a guided lesson path, unlock future skills in order, earn badges, and build toward the Sudoku School Diploma.

Walkthroughs that teach

Replay logical fills, hints, successful guesses, manual moves, and final solved states so the path makes sense.

Your solving replay

Manual moves, candidate notes, and inferred explanations turn your own path into a reviewable lesson.

Smart hints

Ask for one useful next step without surrendering the whole puzzle or spoiling the lesson.

What-If training

Explore alternate cube combinations and see how wrong paths get stuck or contradict.

OCR scan and import

Choose a Sudoku image, review recognized givens in the browser, validate, and import.

Daily Puzzle and stats

Build a daily habit, track completions, review history, and watch your solving streak grow.

Saved puzzles

Create a free account to save board state, candidate notes, and your manual replay history.

Puzzle Library

Start from blank boards, random puzzles, Daily Puzzle, and curated practice cards grouped by difficulty and tags.

Installable PWA

Install Sudoku Skills for a focused mobile experience while server-backed actions stay online and account-aware.

Print for paper solving

Create a clean one-page puzzle sheet when you want to solve away from the screen.

Choose your next challenge

The Puzzle Library is the new starting point.

Open the library from App tools to start a blank puzzle, generate a random puzzle, play the Daily Puzzle, continue with a recommendation, or choose a curated non-School practice puzzle. School lesson puzzles stay inside the guided School path so the course can preserve lesson order, progress, and badges.

Beginner practice

Build confidence with approachable generated and curated puzzles.

Intermediate logic

Practice candidate thinking, row/column/box constraints, and cleaner manual solving.

Expert What-If

Learn how the app explains branching choices without turning the board into a black box.

Access model

Start free, then grow into a training path.

Visitors can try the core solving experience immediately and preview Sudoku School. A free account unlocks saved puzzles, personal statistics, and the first guided School gate. Paid subscriber features are planned around the deeper curriculum, advanced training, and the full School path.

Feature

Not logged in

Free account

Paid subscriber

Play, validate, hint, solve, and review walkthroughs

Included

Blank, random, curated, and OCR-started puzzles

Included

Save and resume puzzles

Included

Daily Puzzle and streak foundations

Preview

Included

Expanded

Puzzle history and personal stats

Included

Advanced stats

Sudoku School training path, badges, and diploma

Preview only

Guided lesson access

Full curriculum, badges, and diploma planned

Community comparisons and rankings

Planned

Guided curriculum

Sudoku School gives practice a purpose.

Open the preview, see the badge path, and imagine a Sudoku course that tells you what to learn next. Lessons unlock in order, completed lessons can be reviewed, and the full path is designed to grow into a paid curriculum with advanced training and the Sudoku School Diploma. Dedicated lesson puzzles stay inside the School overlay so progress, badges, and review remain tied to your account.

Ordered lessons Locked future skills Reviewable walkthroughs Badges and diploma

Preview Sudoku School Create a free account

Collect every School badge From First Steps through the full Sudoku School Diploma.

First StepsComplete your first 3 lessons.

Beginner BuilderComplete 8 beginner lessons.

Beginner GraduateComplete the beginner track.

Candidate BuilderComplete 4 intermediate lessons.

Logic ApprenticeComplete the intermediate track.

Branch ExplorerComplete 3 advanced lessons.

What-If NavigatorComplete 4 What-If or branching lessons.

Expert TraineeComplete 5 expert lessons.

Famous FinisherComplete both famous capstone puzzles.

Sudoku School DiplomaComplete every active School lesson.

1. LearnStart with approachable lessons that make rows, columns, boxes, candidates, and simple placements feel natural.

2. PracticeUse Hint, Restart, notes, and replay tools without the temptation to reveal the full answer.

3. UnlockFinish earlier lessons to open harder skills, famous puzzles, and advanced What-If training.

4. EarnCollect milestone badges and work toward the Sudoku School Diploma as the curriculum grows.

Paper solvers welcome

Print a clean puzzle sheet when you want paper practice.

Many Sudoku fans think best with pencil and paper. The Print action creates a single-page puzzle view with the title, skill level, description, and a large uncluttered grid. It is a small convenience feature, while the app remains ready for hints, replay, stats, and teaching walkthroughs when you come back.

One-page layout Title and skill level Clean givens-only grid Works for library, random, daily, OCR, and manual puzzles

Intermediate Logic Practice Skill level: Intermediate

Printed from Sudoku Skills. Return to the app for hints, notes, stats, and walkthrough review.

Ready to build a Sudoku habit?

Start with one puzzle. Stay for the progress.

Try the board right away, create a free account when you want saved puzzles and stats, and preview Sudoku School to see how badges and the diploma path will turn practice into a course.

Launch the app Create a free account