🐼 You vs 🔢 Sudoku

Time 00:00

Errors 0

Score --

Level 1/10

About Moyako Sudoku

Moyako Sudoku is the classic 9×9 number puzzle tuned for daily brain training. Each board is a fresh, solvable grid generated at one of four difficulty tiers — Easy (lots of starting clues, great for warm-up), Medium, Hard, and Expert (sparse clues that demand careful pencil-marking and advanced technique). A single session takes 5 to 20 minutes depending on tier, and every completed board counts toward your daily streak and leaderboard rank.

How to Play

Pick a difficulty tier and press Start Sudoku.
Tap an empty cell to select it — the row, column and 3×3 box highlight so you can see what's eligible.
Tap a number 1–9 on the keypad to place it. Tap again to clear. Use Notes mode to jot pencil-marks before committing.
Fill every row, every column, and every 3×3 box with the digits 1–9 — no repeats.
The Hint button highlights one forced cell per use. Mistakes auto-flag in red so you can backtrack without losing your place.

Skills Used

Logic — deducing values from constraints rather than guessing.
Pattern Recognition — spotting naked pairs, hidden singles and X-wing structures across rows and boxes.
Working Memory — holding pencil-mark candidates in mind while scanning elsewhere.
Focus & Attention — sustaining careful tracking across dozens of cells without slips.

Tips for Better Play

Scan rows, columns and boxes systematically before pencil-marking — easy placements come first.
Use Notes mode generously; committed numbers are hard to unwind.
When stuck, look for a cell with only one candidate (naked single) or a candidate that appears only once in its unit (hidden single).
Double-check every placement you make from a guess — one wrong digit corrupts the whole board.

FAQ

Is Moyako Sudoku free? Yes. All four tiers, daily streak and leaderboard are free to play.

Are puzzles solvable without guessing? Yes — Easy through Hard always have a pure-logic solution path. Expert may require hypothetical chains.

Can I save and resume? Yes. Your current board auto-saves locally; sign in to sync across devices.

Does the Hint button count as cheating? No, but excessive hints lower your score. Use them to learn techniques, not to skip thinking.

Moyako Games is a games platform operated by Hanalytic Limited (UK). Not a medical device, not a healthcare product, and not regulated as one. We do not diagnose, treat, prevent, or claim to improve any medical or cognitive condition. Game scores are self-tracking tools — not clinical measures. If you have concerns about your cognitive health, speak to a qualified healthcare professional. Methodology →