| For the first round, all clubs are trump and the three remaining Jacks overtrump clubs. |
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| If unable to follow suit and if an opponent is currently winning the trick with a trump, players must trump and overtrump if possible. |
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| If a nontrump suit is led, they must follow suit or, if unable, must trump if possible but need not overtrump. |
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| Failing to follow suit, trump or overtrump when able to do so. |
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| 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. |
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| 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. |
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