Welcome to Killer Sudoku Online's online killer sudoku game.
You can play killer sudoku online, right here! Move the cursor to a cell and enter the value that the cell should have. If you are not sure of a value, you can enter multiple values in a cell. If you enter a value in a cell that is already there, it will be removed.
If you have cookies enabled, you can save your current solution and come back to it later. Even if you don't explicitly save your solution, your work is autosaved. If you accidentally leave the page (e.g., you press backspace), and return before you exit the browser, you won't lose any work.
If you want some help generating the possible ways to create a sum, use the sum calculator button, which will pop up a window to help.
If you have suggestions, or browser incompatibility problems, please email us. Thank you.