Free Online Sudoku – 9×9 Classic Logic Puzzle

Sharpen your mind with Eqsy’s free online Sudoku!
Fill the 9×9 grid with digits from 1 to 9 so that no number repeats in any row, column, or 3×3 block.
Play casually, challenge yourself with harder modes, or race the timer to climb the global leaderboard.

Share this result:

Subscribe for updates

🔍 How to Play

1. Choose Difficulty
Select Easy, Medium, or Hard. This controls how many numbers are pre-filled.

2. Choose Mode

Classic: A brand-new random puzzle every time.
Daily: A new puzzle unlocks every day.
You can play today’s and all past days, but future dates are locked.

3. Fill in Numbers
Tap a cell and use the number buttons (1–9).
Use the clear button (⌫) to remove a value.

4. Draft Mode (✏️)
When Draft is ON, you place small pencil-mark candidates instead of committing to a number.

5. Auto-Notes (🔢)
Automatically fills candidate numbers based on what is still possible in each cell.

6. Auto-Check
Highlights conflicts instantly. Turn it off for a more traditional challenge.

7. Undo (↩)
Undo your last move anytime.

⚡ Power Mode (Optional)

Power Mode adds a layer of strategy with optional powerups.
When enabled, you get access to:

• 🔍 Reveal

Shows the correct number for the selected cell.
Costs points and only works on non-given cells.

• ❌ Clean

Removes an incorrect number without showing the correct one.

• ❄ Freeze Timer (10 seconds)

Pauses the timer briefly when you need a moment to think.

Note: Using Powerups affects your score and is marked as Power Mode on leaderboards.

⭐ Scoring System

Correct number: +5
3 correct moves in a row: +15 combo
Wrong number: –10
“Check” with conflicts: –25
Smart Hint: –20
Powerups: –20 to –50, depending on type
Completion bonus: Based on difficulty + remaining time

🏆 Leaderboards

Classic Leaderboard:
Shows the top scores for Easy, Medium, and Hard.

Daily Leaderboard:
Shows the scores for the chosen date — everyone plays the same daily puzzle.

(Results are not saved while in Zen Mode.)

📱 Features

Smooth, modern design with colorful 3×3 block themes
Draft Mode for advanced solving
Auto-Notes & Auto-Check features
Daily Challenge system
Optional Power Mode powerups
Undo, Hints, and detailed scoring
Full local statistics
Light & Dark mode
Mobile-friendly layout

📱 Is Eqsy Sudoku Mobile Friendly?

Absolutely. Eqsy Sudoku is fully browser-based and works smoothly on:

Mobile
Tablet
Desktop

No installation or sign-up required.
Just open the page and start solving instantly.

🌐 Offline Support

Once loaded, the Sudoku puzzle works even without internet access.

✋ Touch Controls

Yes — Sudoku supports tap-to-select and mobile number pad entry.

❌ What happens if I make a mistake?

Mistakes increase your counter and reduce your score.
If auto-check is enabled, incorrect numbers highlight instantly.

🔄 Can I switch difficulty mid-game?

Switching difficulty generates a new puzzle and resets your progress.

What’s the difference between Classic and Daily?

Classic generates a new puzzle every time.
Daily gives everyone the same puzzle for the selected date.
Every day, a brand-new Sudoku puzzle becomes available in Daily Mode.
You can play today’s puzzle or any previous date — but future dates are locked.
Daily puzzles are the same for all players on the same date, so you can compare your score and time on the Daily Leaderboard.

Do I lose points for using help features?

Yes. Hints, Check, and Powerups all reduce points to keep the leaderboard fair.

Does Power Mode count on the leaderboard?

Yes, but your score will be labeled as Power Mode.

What does Zen Mode do?

Zen Mode disables scoring, time tracking, and leaderboard saving — ideal for relaxing play.

ℹ️ About Eqsy Sudoku

Eqsy Sudoku is a clean, fast, and modern 9×9 puzzle designed for all skill levels.
Enjoy classic Sudoku gameplay with smooth animations, a clean interface, dark mode, and a global leaderboard.

Whether you’re a beginner or a dedicated puzzle solver, Eqsy Sudoku offers a relaxing and engaging experience directly in your browser.