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 When is 4NT Blackwood? by David

In many auctions it will be clear that a 4NT bid is Blackwood, or perhaps Roman Keycard Blackwood if that is what you play. However, there are some auctions in which 4NT has a quite different meaning. We will take a look at some situations in this quiz.

You will be South throughout the quiz. If you think 4NT is Blackwood on a problem, use Roman Key card responses: 5♣ = 1 or 4 key cards, 5♦ - 0 or 3 keycards, 5♥ = 2 keycards, 5♠ = 2 keycards plus the queen of trumps. (Note that the king of trumps is a keycard).

Question 1

  Your Hand
♠ K 9
♥ 8
♦ K J 6 3
♣ A K 9 6 5 2 		 
Q: 1 - What will you say next after the start to the auction shown below?
SudOuestNordEst
--1♠2♥
3♣Pass3NTPass
?


 Your choice:
A: 4♣. There is a chance of a slam, but you are not good enough to bid Blackwood. In any case, 4NT by you would not be Blackwood now; it would be a natural slam try in notrump.

You should bid 4♣ to invite a club slam. If partner then bids 4♦, this would be a control bid, agreeing clubs as trumps and showing the ace of diamonds.

Your result so far:
Open Question

Question 2

  Your Hand
♠ K 9 3
♥ 8
♦ K Q 3
♣ A K 9 6 5 2 		 
Q: 2 - What will you say next after the start to the auction shown below?
SudOuestNordEst
--1♠2♥
3♣Pass3NTPass
4♣Pass4NTPass
?


 Your choice:
A: Pass. When you are in 3NT and you invite a slam by bidding four of a minor, partner's return to 4NT is to play and shows little interest in a slam. Here you should pass the 4NT bid. If you would be better off in 5♣, partner would have bid that instead., Perhaps he has a singleton club.

Your result so far:
Open Question

Question 3

  Your Hand
♠ K Q 8
♥ K Q 7 6
♦ K 7
♣ A Q J 4 		 
Q: 3 - What will you say next?
SudOuestNordEst
2NTPass4NTPass
?


 Your choice:
A: Pass. Your partner's 4NT is not Blackwood. It is a natural slam try, asking you to to bid 6NT (or perhaps six of a suit if you have a 5-carder somewhere.) Here you are minimum and will pass.

Your result so far:
Open Question

Question 4

  Your Hand
♠ J 8 3 2
♥ A 9 7 4
♦ J 8 7
♣ Q 7 		 
Q: 4 - What will you bid here?
SudOuestNordEst
---2♥
Pass3♥4NTPass
?


 Your choice:
A: 5♦. 4NT is not Blackwood. It shows a big two-suiter in the minor suits. You are asked to choose one of the minors. Your response is 5♦, because your diamonds are longer than your clubs.

(If 4NT was RKCB, Roman Keycard Blackwood, your response would have been 5♣ with one keycard. It would make no sense for 4NT to be RKCB here, because you would not know the trump suit.)

Your result so far:
Open Question

Question 5

  Your Hand
♠ 8 2
♥ A Q 7 6 2
♦ Q J 7
♣ A 7 6 		 
Q: 5 - What will you bid now?
SudOuestNordEst
--1♠Pass
2♥Pass4NTPass
?


 Your choice:
A: 5♠. North's 4NT is Blackwood here; he is agreeing your heart suit. Since you have two keycards and the ♥Q, your response is 5♠.


Your result so far:
Open Question

Question 6

  Your Hand
♠ A Q 10 7 4 2
♥ K 3
♦ K Q 5
♣ 7 6 		 
Q: 6 - What will you say now?
SudOuestNordEst
---3♣
3♠Pass4NTPass
?


 Your choice:
A: 5♣. Your partner's 4NT is RKCB, agreeing spades. Since you have one keycard, you will respond 5♣, which shows 1 or 4 keycards.

Your result so far:
Open Question

Play this Hand

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

Overall Results

Your results:   out of    Average: 

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