In this edition of Slams, we will have another look at our dear friend Blackwood, with the 5 keycards being the 4 Aces and the King of Trumps.
Normally, you should know how to respond to it. We're going to look into how the auction progresses after the response.
Remember the responses to 4NT, when a trump suit is agreed:
4NT -
5♣ - 3 or 0 keys
5♦ - 4 or 1 key(s)
5♥ - 2 keys without the Queen of trumps
5♠ - 2 keys with the Queen of trumps