Conventional, asking opener
to TRANSFER into his suit (he bids the suit below his real suit)
3
Pass
or correct
3...
Natural
& forcing to game, 6+cards suit.
Game
to play
4NT
Blackwood, asking for
Aces, then specific Kings via 5NT. If opener had wanted to use Keycard
Blackwood in opener's suit, he would begin with 2NT and then make a Keycard
inquiry via 4NT.