Step-by-step walkthroughs
Replay logical fills, hints, successful guesses, manual moves, and final solved states.
Daily Sudoku training
Get better at Sudoku every day.
Sudoku Skills is built for learning, not just checking answers. Play today's generated Daily Puzzle, choose a curated training puzzle, scan a puzzle from paper, save your progress, and review every move through a teaching walkthrough.
Daily Puzzle
Build a habit. A new internal puzzle is generated and saved each day, with difficulty shown before you play.
What-IfWhen logic runs out, compare valid branches and learn why the wrong path fails.
Why it is different
A Sudoku app that teaches the path, not just the answer.
Use the app as a solver, tutor, practice notebook, daily puzzle habit, and mobile-friendly training companion. The board stays focused while App tools keeps setup, saved puzzles, OCR, account, help, and install actions close by.
Daily Puzzle
Signed-in users get a daily prompt and a prominent App tools button when today's puzzle is waiting.
Puzzle Library
Start from blank boards, random puzzles, recommended puzzles, and curated cards grouped by difficulty and tags.
Saved puzzles
Create a free account to save board state, candidate notes, and your manual replay history.
OCR scan and import
Choose a Sudoku image, review recognized givens in the browser, validate, and import.
What-If training
Explore alternate cube combinations and see how wrong paths get stuck or contradict.
Hints and validation
Get a single useful next step, check your board, and learn from highlighted issues.
Installable PWA
Install the app for a focused mobile experience while server-backed actions stay online and account-aware.
Progress foundations
Daily attempts, completions, and streak-ready data are being prepared for the statistics milestone.
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 training puzzle. Search and filters help you pick by difficulty, tag, and learning goal.
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 learning experience immediately. A free account unlocks saved puzzles and daily progress. Paid subscriber features are planned around deeper training, advanced stats, and the full Sudoku School path.
Feature
Not logged in
Free account
Paid subscriber
Play, validate, hint, solve, and review walkthroughs
Included
Included
Included
Blank, random, curated, and OCR-started puzzles
Included
Included
Included
Save and resume puzzles
Sign in required
Included
Included
Daily Puzzle and streak foundations
Preview
Included
Expanded
Puzzle history and personal stats
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Coming next
Advanced stats
Sudoku School training path
Preview
Starter lessons planned
Full curriculum planned
Community comparisons and rankings
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Planned
Next big direction
Sudoku School will turn practice into progression.
Milestone 15 moves into game-session tracking, completion history, personal statistics, streak visualization, and better recommendations. Those pieces become the foundation for a guided curriculum that helps players become stronger solvers over time.
Try the current app