| And what's more it is highly unfair to Berg and Buchner, because there are not many people who could really overtrump a message as strong as theirs. |
| The fourth to play after a non-trump card has been trumped by his partner, when unable to either follow suit or overtrump, must undertrump even if his partner holds the trick. |
| For the first round, all clubs are trump and the three remaining Jacks overtrump clubs. |
| Failing to follow suit, trump or overtrump when able to do so. |
| If unable to follow suit and if an opponent is currently winning the trick with a trump, players must trump and overtrump if possible. |
| If a nontrump suit is led, they must follow suit or, if unable, must trump if possible but need not overtrump. |
