This is an interesting betting option that gives a bettor two chances to win. In this case, the bettor’s chances of winning hinges on the possibility of any of the two outcomes happening. In soccer, there are three ways in which the double chance works. The first is that Home wins or Draws, if that happens, you've won your bet. The second is that the Away team wins or Draws, if any of those two options comes through, you've won your bet. The last case scenario is the "12" which means Home or Away team wins, so in this case you've won your bet when one team wins and there's no draw.