| sufficient keycards | all five keycards (the four aces and the king of trumps) to bid a grand slam, and at least four of them to bid a small slam; a void opposite a holding with no ace and sufficient trumps is as good as a keycard |
| good trumps | the queen of trumps to bid seven, or six when missing a keycard; two extra trumps (guaranteeing a ten-card fit) will do instead |
In this section we look at the slam tools available: