Bidding question on rebid?

[billw55]

-- 7S needs either a 3-3 Ht split, or hQJ bare, or fall back on Diam hook

On 4-2 hearts you can ruff out the suit for the 13th trick.

[Bbradley62]

( Either needs 3-2 Sp split )

Or stiff ♠J.

[bucky]

I would say that 7♠ is quite optimistic, 7NT is REALLY optimistic. Don't you need around 70% to bid a grand?

[TWO4BRIDGE]

Thx billw and Bbradley...

... that makes the odds higher for 7S.

[Zelandakh]

Would south not bid the same way with:

 

KQJxxxx

xx

Ax

Kx

 

5NT usually says "bid 7 with 2 of the top 3 hons".

Perhaps you have different bidding rules to me but with such a hand I do not think I would advance to the 5 level with a cue. 5NT is the grand slam force but it is more normal to play responses that make better use of the available space such as 7S for AKQ; 6C for any 1 honour; and 6D/H/NT for KQ/AQ/AK. But you are right that the RKCB auction is better - I just found it amusing to see a way of bidding this which would look at home more than half a century ago.

[TWO4BRIDGE]

I would say that 7♠ is quite optimistic, 7NT is REALLY optimistic. Don't you need around 70% to bid a grand?

 

7NT is only 50% ( the Diam hook )

 

7S : Ht split 3-3 .... 35%

..................4-3 .... 48%

.............................83%

 

Add to that falling back onto the Diam hook: 50% of remaining 17% = 8.5%

 

.......... or over 91% .

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Both need 3-2 trump split ( 68% ) or 4-1 w/stiff J ( add 5% ) or 73%

 

7NT: = 73% x 50% = about 37% overall

 

7S : = 73% x 91% = about 66% overall

[P_Marlowe]

That is why Keycard was invented.

 

Sure, but the hand I gave will answer 5S as a response to the 4NT inquiry,

and missing only 1 KC 5S will get raised to 6S.

 

And one may or may not want to be in 6S with

 

KQxxxx vs. 10x

 

as trump suit.

 

With kind regards

Marlowe

[losercover]

Our bidding would be the same thru the 4S bid. I expect my partner to have a 7 loser hand. With 6 losers they would have bid 3S. The hand is a very nice 7 loser hand. South has a 5 loser hand so the potential is 12 tricks. I would bid KCB and go on to 6 spades.