Sudoku

The world's favourite number-placement puzzle, with gentle hints when you need them.

All levels 5–15 min Free EN & हिन्दी

About this game

The world’s favourite number puzzle. Fill the 9×9 grid so every row, every column and every 3×3 box contains the digits 1 to 9 exactly once. Every puzzle is freshly generated with a single, logical solution — with pencil notes, hints and gentle mistake-checking to help you grow.

How to play

Tap a cell, then tap a number (or use your keyboard) to fill it.
Each row, column and 3×3 box must contain 1–9 with no repeats.
Turn on Notes to pencil in small candidates for a cell.
Use Hint if you get stuck, Undo to step back, and Erase to clear a cell.
Wrong entries are gently highlighted — finish the grid to win.

Good for your mind

Logical reasoning Patience & focus Pattern recognition Working memory

Healthy by design

Healthy timer

Choose 1–15 minutes, or no timer for calm games. Play stays balanced.

Gentle breaks

Soft reminders to pause and rest your eyes after a while of play.

Kids & senior modes

Bigger buttons, calmer pace and night mode for comfortable play.

Fully offline

Installs as an app and plays without internet — your scores stay on your device.

Questions, answered

Do I need to download anything?

No. Every game plays instantly in your browser. You can also install Lifeved Brain Games as an app and play fully offline.

Is this game free?

Many games are free to play. Premium games are included with a Lifeved membership — sign in with your membership email to unlock them all.

What is the healthy timer?

Before you play you choose a play time — 1, 3, 5, 10 or 15 minutes, or no timer for calm games. We add gentle break reminders so screen time stays balanced.

Is it suitable for kids and seniors?

Yes. Kids and senior modes offer bigger buttons and a calmer pace, and night mode dims the screen for comfortable evening play.

Are my scores private?

Yes. Your best scores are saved privately on your own device and are never uploaded.

Is this available in Hindi?

Yes. The whole app works in English and हिन्दी — switch any time from the top of the page.