alanback: Ooops, you are darn right, for the rating system to take this type of tournament into account, a gammon should also multiply the rating won/loss by three !

Imho triple gammon is a different GAME than backgammon anyway, so it is probably recommended to make its tournaments unrated. Or create a different rating list for it...

All that is, if one really wants an accurate rating system for backgammon, as we have already seen that the current one isn't accurate anyway :-)