[serapuff]

♠K6
♥AKQ1063
♦AK652

white/red, 4th seat

Bidding goes:

pass-pass-2C*-X (you)
3C - pass - 4C - 4NT (showing 2 suits)
pass - 5D- pass - ?

How would you bid this?

* 2C shows 5+ clubs 10-15
3C is non constructive

[nigel_k]

Agree with the bidding so far and would bid 5NT (choice of slams) now.

Slam is not certain but I cannot pass when 12 tricks are likely and I haven't shown the full strength of my hand so can't expect partner to bid more than 5♦ on most hands where slam is good. A grand slam try is too much - partner is quite unlikely to have the ♠A and he could well accept without it given that he has shown nothing.

Partner has better diamonds than hearts, so 5NT suggests five diamonds and a six card major, allowing us to play 6♥ opposite for example xxxxx xxx Qxx xx. 5♥ also suggests this hand type but slightly weaker and is a non-forcing slam try, maybe the same hand without the ♥Q would bid 5♥.

[andy_h]

Tough problem. I wonder what 5♣ by partner would be, maybe 4234 suggesting he prefers spades if I had spades and diamonds (assuming 3♣ over 2♣ shows both majors)? If that's the case then logically partner doesn't have spade length so maybe he's 3244 or 4144 or 2254? Think I'm just gonna bid 6♦.

[gwnn]

I still dislike these offshape doubles, we will never come close to describing our hand.

4D if played as leaping michaels or
6H with no special agreements.

[ONEferBRID]

gwnn, on May 8 2010, 06:50 AM, said:

I still dislike these offshape doubles, we will never come close to describing our hand.

4D if played as leaping michaels or
6H with no special agreements.

Double-jumping to 4D seems like an unnecessary waste of valuable space ( eventho it is much better than the X , then 4NT ).

Here is a simplified 2-suiter system I learned some years ago for a weak-2D open, but applying it to the special 2C! open (= to a real suit, opening values ) :

4C = both Majors
3H-jump = H/D
3S-jump = S/D

- - - - - - - - - - - - - - - - - - - - - - - - -
With the OP bidding, where partner shows a preference to Diam, I'd have to go with 6D ...... unfortunately leaving the ♠K x vulnerable to an opening lead assault .

[dake50]

DAPO/Super MAF uses 2S as 2-suited not Spades, not clubs.
Then Q-bid shows slam try/force, even repeat Q-bid here.
Partner evaluates very well after that description.