cool sudoku game

this is a sudoku game, yeah that's it idk what to explain really

controls:

• click any cell with your mouse to select it
• type numbers 1-9 to fill in the selected cell
• backspace or delete to erase a number
• black numbers are the starting one (you can't change it)
• blue numbers are the ones you put in

how 2 play??? i dont know what sudoku is

• google/whatever search engine you prefer