At the beginning of the game, you will have a grid divided into nine squares of 3x3 cells each. Some cells are filled with numbers from 1 to 9. Your task is to fill in the remaining empty cells.
Start playing by clicking on any empty cell you want to fill. The line and row where the cell is located will be highlighted. Your task is to choose a number from 1 to 9 so that it does not appear twice in the same line, row or square.
Click a number from 1 to 9 below the grid to write it to the selected cell. Identical numbers will be highlighted throughout the grid, so you can check if there are any identical numbers in the same line, row or square.
The number you wrote down will be colored blue, you can always go back to it and change your mind.
There is a stopwatch below the grid, so you can see how much time you are spending on the game.
Click the Erase button to delete the selected number.
Click the Hint button to get help if you get stuck.