Mr Chalker keeps track of and assists you with three dart checkouts. Pick a starting checkout (from 40 to 170) and see if you can hit what is required, of course by completing the shot with a double! When the current checkout has been hit Mr Chalker will add a point to the player's score and advise what the next checkout is. Mr Chalker will also recommended the shot to give you the best probability of success with the checkout. You will require a dart board, darts and a good aim to get the most out of this skill.