 The goal is to score 5 paired cribbages out of a possible 8, with the exception that the last ball, required to be the 15 ball, is not paired but alone counts as 1 cribbage.At the start of cribbage, a standard set of fifteen pool balls are racked at the end of a pool table, with the of the rack centered over the and the 15 ball placed at the rack's center.All other balls are placed randomly except that no two of the three corner balls may total to fifteen.