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Detail specifications 61JI - Level 3

Blackwood convention and Queen of trump

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Responding to Blackwood 5 Rkc
  • 5 with 3 or 0 key(s) : that's30
  • 5 with 4 or 1 key(s) : that's 41
  • 5 2 keys without Q trump
  • 5 2 keys and Q trump
  • 5 SA 2 keys and a void

If you are looking for a big slam, or even to ask for a small slam if one key is missing, you may want to ask your partner if he holds Q trump. As you have noticed, you know about Q trump only in case your partner has 2 keys.
J
10
K
8
4
7
6
3
A
Q
J
9
4
SWNE
1
Pass
2
Pass
3
Pass
4
Pass
4NT
Pass
5
Pass
6
A
K
Q
9
4
3
A
7
5
4
K
7
5
Exercise E6282 4 NT = direct Blackwood (no control sequence as S holds them all!). In this case, no problem N has Q trump...
 
Exercise E9381 The pair has all the keys. How can the responder know if the opener has Q trump?
 
 
How can you ask your partner about Queen trump ?
One will use the "collante" :
  • With a or trump : after a 5 response, using the "collante" is using the suit right above 5 , asking : do you have Q trump ?
  • With a trump: After a 5 response, 5 is asking : do you have Queentrump ? It is still time to stop before small slam.
  • With a trump After a 5 response, the question is asked with 5 (you must skip 5 which would be a Stop). 5 : do you have Queen trump. Then you can't stop before small slam. Therefore, you may ask the question if and only if a big slam is possible, meaning holding all keys!

K
9
7
3
A
5
K
Q
J
8
7
A
5
SWNE
1
Pass
2
Pass
2
Pass
3
Pass
4
Pass
4NT
Pass
5
Pass
5
Pass
6
Pass
6
A
Q
10
5
4
K
Q
J
10
5
4
3
Q
Exercise E9373 After a 5 response (4 or 1 key), 5 is asking for Q trump.
 
K
9
7
3
A
5
K
Q
J
8
7
A
5
SWNE
1
Pass
2
Pass
2
Pass
3
Pass
4
Pass
4NT
Pass
5
Pass
5
Pass
5
Pass
Pass
A
10
8
5
4
K
Q
J
10
5
4
K
Q
Exercise E9374 5 :do you hold Q trump ?
 
 
How to answer this question ?
  • He the responder doesn't have Queen trump, he gets back to the lowest level in trump.
  • Any other bid is agreeing having Q trump. The responder may use the available steps in order to give informations about his honors

K
9
7
3
A
5
K
Q
J
8
7
A
5
SWNE
1
Pass
2
Pass
2
Pass
3
Pass
4
Pass
4NT
Pass
5
Pass
5
Pass
6
Pass
6
A
Q
10
5
4
K
Q
J
10
5
4
3
Q
Exercise E9373 6 : I've got Q trump and K .
 
K
9
7
3
A
5
K
Q
J
8
7
A
5
SWNE
1
Pass
2
Pass
2
Pass
3
Pass
4
Pass
4NT
Pass
5
Pass
5
Pass
5
Pass
Pass
A
10
8
5
4
K
Q
J
10
5
4
K
Q
Exercise E9374 5 : I don't have the Q (back to the lowest level in trump).