- Free
- No download
- Works on phones
About the game
An 81-cell grid sits in front of you, split into nine small 3x3 squares. A handful of cells already hold digits from 1 to 9, and the rest are blank. Every row, every column and every 3x3 square has to end up with each digit exactly once.
Pick a difficulty first, then work cell by cell. Click a cell, click a number, and check the lines around it before moving on. The Notes button lets you pencil in candidates without placing anything, which helps on the harder grids. Wrong entries are easy to make, so slow and careful beats fast.
How to play
- Click the cell you want to fill, then click a digit from 1 to 9.
- Press Notes to mark possible numbers in a cell without placing them.
- No digit may repeat in a row, a column or a 3x3 square.
- Choose a difficulty level before you start, and watch out for mistakes.