Three golfers. No idea what game to play. 531 Golf is built specifically for 3-ball golf formats like 5-3-1 (Nines) and Split Sixes. Enter scores or finishing positions and the app handles the points, ties, handicaps and running totals automatically. It also includes rules and examples, so it’s useful both for golfers who already play these games and for anyone discovering 3-ball formats for the first time.