The much-loved DIV Golf handicap system has gone through several iterations, but I am sure we can now all agree that the system below (from Season V onwards) is fair, and no one can argue against the Super Computer!
20 scorecards - average the best (lowest) 8 scorecards
19 scorecards - average the best (lowest) 7 scorecards
17 to 18 scorecards - average the best (lowest) 6 scorecards
15 to 16 scorecards - average the best (lowest) 5 scorecards
12 to 14 scorecards - average the best (lowest) 4 scorecards
9 to 11 scorecards - average the best (lowest) 3 scorecards
7 to 8 scorecards - average the best (lowest) 2 scorecards
6 scorecards - average the best (lowest) 2 scorecards and adjust the calculated handicap by -1
5 scorecards - take the lowest scorecard only
4 scorecards take the best (lowest) scorecard and adjust the calculated handicap by -1
3 scorecards - take the best (lowest) scorecard and adjust the calculated handicap by -2