A fresh Sudoku puzzle every time you press the button, with easy, medium and hard levels. Every puzzle is generated in your browser and checked to have exactly one solution.
Click a square and type a number. Mistakes turn red. Every puzzle is generated fresh with one solution.
How to play
- Pick a difficulty and press New puzzle.
- Click an empty square and type a number from 1 to 9.
- Each row, each column and each 3 × 3 box must contain the numbers 1 to 9 exactly once.
- Wrong numbers turn red so you can fix them straight away.
- Fill the whole grid correctly to solve the puzzle.
Tips to score higher
- Scan each 3 × 3 box for numbers that can only go in one place.
- Look at rows and columns that are almost full first.
- On hard puzzles, note which numbers are still missing from each row.
This game is free to play on desktop, tablet and phone. It runs entirely in your browser, so once the page has loaded you can keep playing even if your connection drops.
