The cursor can be moved around the box with the standard cursor movement keys or the mouse. Switching of lasers or marking of black boxes is done with the Return or Enter key.
mouse button, or by pressing theYou can mark the fields where you think a ball can't be, too. Just press the
mouse button. It often helps you to find an area where a ball could possibly be. To clear any marks (blue or brown) press the mouse button. Brown marks can't overwrite blue marks. This way you can't erase the blue marks (guessed balls) by accident when playing with the mouse button.When you think the configuration of balls you have placed is correct, press the
mouse button. You will be informed whether you are correct or not, and be given your score. Your score is the number of letters and numbers around the outside of the box plus five for each incorrectly placed ball. If you placed any balls incorrectly, they will be indicated with red fields, and their actual positions indicated with cyan fields.