Keycard Blackwood by Matthias Huberschwiller

In this quiz, we will look at the most used slam convention: Keycard Blackwood. When you have a fit, a 4NT bid is a question, asking partner how many keys he has.

There are five keys: the four Aces and the King of trumps. It will help you to stay out of slam when you have two immediate losers.

The answers are the following:
4 NT ?
5♣ - Three or zero keys
5♦ - Four or one keys
5♥ - Two keys without the Queen of trumps
5♠ - Two keys plus the Queen of trumps

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Question 1

Your Hand
♠ Q
♥ A Q J 9 6 3
♦ K Q J 6 2
♣ A

Q: 1 - What do you bid as South?

South	West	North	East
1♥	Pass	3♥	Pass
?

A: 4 NT - This is a perfect hand for Blackwood. You have three keys missing, and you will learn which contract you can play depending on your partner's response.

Your result so far:

Open Question

Question 2

Your Hand
♠ Q 6 2
♥ A 9 6 3
♦ K 5
♣ A 9 6 2

Q: 2 - What do you bid as South?

South	West	North	East
1♣	Pass	1♥	Pass
2♥	Pass	4 NT	Pass
?

A: 5♥ - You have two keys (both Aces), without the trump Queen.

Your result so far:

Open Question

Question 3

Your Hand
♠ A Q 2
♥ K Q 6 2
♦ 2
♣ A J 9 6 2

Q: 3 - What do you bid as South?

South	West	North	East
1♣	Pass	1♥	Pass
3♥	Pass	4 NT	Pass
?

A: 5♣ - You have three keycards (The Ace of Spades, the Ace of Clubs and the King of Hearts).

You are showing 3 or 0 keys, but your partner will know which option you have, depending on the bidding sequence. Here, it is obvious that you can't have zero.

Your result so far:

Open Question

Question 4

Your Hand
♠ K 9 6
♥ 7 6 2
♦ K 6 2
♣ A Q 6 2

Q: 4 - What do you bid as South?

South	West	North	East
1♣	Pass	1♥	Pass
1 NT	Pass	4 NT	Pass
?

A: Pass - This is not Blackwood. It is a quantitative 4 NT. With a minimum hand, you shall pass.

4 NT is only Blackwood when you have a fit.

Your result so far:

Open Question

Question 5

Your Hand
♠ A Q 6 5 2
♥ K Q 6
♦ K 6
♣ K 6 2

Q: 5 - What do you bid as South?

South	West	North	East
-	-	1♣	Pass
1♠	Pass	3♠	Pass
4 NT	Pass	5♥	Pass
?

A: 5♠ - Your partner has only two keys. You are missing two keys. Therefore, you need to stop in 5♠.

Whenever you are missing two Aces, or one Ace and the King of trumps, it's not a good idea to bid a slam.

Your result so far:

Open Question

Play this Hand

Now that you've bid five hands, let's see how your play goes.

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Overall Results

Your results: out of Average:

What next? You may enjoy playing our prepared hands series.
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