Restrictions
Why People Get This Wrong
People often assume that hearts can be led in the first trick if they haven't been broken yet, which leads to arguments about whether a heart was played earlier or not. The confusion arises because the rule specifically states that hearts cannot be led until they've been "broken," meaning a heart must have already appeared on an earlier trick, except when you're holding no cards other than hearts.
Official Verdict
No penalty cards on the first trick — hearts and the queen of spades may not be discarded there.; Hearts cannot be led until they have been "broken" — that is, until a heart has been discarded on an earlier trick. The exception is a player holding nothing but hearts.