Transfers
3 transfer ke hearts.
3 transfer ke spades.
3 transfer ke  clubs.
4 transfer ke diamonds.
4 both majors
4 menunjukan dua  majors minimal  5-5
4/4 are natural, 6+ card, weak, to play.
Convention dan constructive bidding
4th suit forcing
Keycard Blackwood 14 03
Response :
5 = 1 or 4 Keycards
5 = 0 or 3 Keycards
5= 2 or 5 Keycards, tanpa  Queen trumps
5= 2 or 5 Keycards plus Queen  trumps
Bid 5NT selanjutnya Tanya  King.