After Marni Van Grouw agreed to a date for the “Can You Beat Biggy?” challenge, she and her family had to figure out who among them would be the second part of the Van Grouw team, and she came up with a clever way to solve the dilemma.

The family of four – Marni, husband Tim, and youngsters Austin (13) and Alex (8) – from Lititz, Pa., competed in a five-game series at various miniature golf courses, including those at Pennington Golf Center in New Jersey; Magic Mountain Fun Center in Columbus,…