Kashdan
Invented by Isaac Kashdan, this system awards four points for a win, two points for a draw, one point for a loss, and none for an unplayed game. As a result, if players with no unplayed games tie, the one with fewer draws finishes higher on the tie-break (i.e. a win and a loss is better than two draws) (Just & Burg 2003:201).
Read more about this topic: Tie-breaking In Swiss-system Tournaments