About 3Sudoku
Click an empty cell with the mouse or touchpad to enter a number.
Complete each level to reach a more challenging one. The challenges get progressively tougher as you go. Start simple to build your skills.
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Quick summary
- The 9x9 grid opens with some numbers filled.
- Click empty cells to enter numbers 1 to 9.
- Avoid repeats in rows, columns and 3x3 blocks.
- Complete each level to move to a more challenging one.
Key features
- Fill a 9x9 grid with numbers 1 to 9.
- No repeats in any row, column or 3x3 block.
- Click empty cells using a mouse or touchpad.
- Complete each level to reach a tougher one.
- Progressively tougher challenges.
Tips & tricks
- Start simple to build your skills.
- Avoid repeats in lines and 3x3 sections.
Frequently asked questions
How do I enter a number?
Click on an empty cell using a mouse or touchpad to fill in a number.
What is the rule?
Numbers 1 to 9, no repeats in any row, column or 3x3 block.
What happens after I solve a grid?
You move to a more challenging level.
Can I play on my phone?
Yes, it runs on phones and tablets in landscape.
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