Before the count, any side-suit bid above game shows values for at least six and asks for a count of keycards outside the bid suit. This is Exclusion Keycard Blackwood (EKB) and is typically used because controller has a void in the suit. Responses to EKB are the same as to RKB.
| West | North | East | South | ||
|---|---|---|---|---|---|
1 | pass | ||||
1 | pass | 2NT | pass | ||
4 |
| 4NT | nought or three keycards outside spades |
| 5 | one or four keycards outside spades |
5 | two keycards outside spades but no trump queen |
| 5 | two keycards outside spades and the trump queen |