# Sudoku · Số học — free Sudoku with digits or cute icons

> Free Sudoku in the browser, in Vietnamese and English, by ChabuLab. No sign-up, progress saved on your device. URL: https://games.chabulab.com/sudoku/

## What you can play

- **Level map:** 4 difficulties (Easy, Medium, Hard, Expert), 50 levels each in two chapters of 25. Clear a level to open the next; each level earns 1–3 stars (3: no mistakes and no hints; 2: at most 2 mistakes and 1 hint; 1: solved).
- **Endless:** opens after chapter 1 of a difficulty; a new board every time.
- **Board of the day:** one board per difficulty per day, the same for everyone, with a streak and a spoiler-free share text.
- **Kids (Bé):** 25 levels on 4×4 and 25 on 6×6, solvable with simple logic.
- **Icon mode:** replace digits 1–9 with 9 cute stickers (fruits, sky, sweets, critters). Switch any time; the puzzle stays the same. Sweets unlock after 3 days played, critters after 7.

## How to play

Fill the grid so every row, column and box contains each value exactly once. Use notes for candidates; placing a value clears it from the notes in its row, column and box. Three hints a day explain the next step.

## FAQ

- **Is it free?** Yes. Free in the browser, no sign-up or download. Progress stays on your device.
- **What is icon mode?** Digits 1–9 replaced by 9 cute icons; same rules, switch any time.
- **Is there Sudoku for kids?** Yes: 50 levels on 4×4 and 6×6 boards, played with icons.
- **How do I move my progress to another phone?** Settings → copy the progress code, paste it in Settings on the new device.

Made by ChabuLab — https://chabulab.com/ · More games: https://games.chabulab.com/