A few situations
Posted 2012-June-22, 10:51
Posted 2012-June-22, 11:12
2. Some sort of 'nudge'. I think 2♠ is open to interpretation too.
3. Still looking for strain, so its natural. I could be convinced 4♥ is a spade raise however.
4. Another nudge - probably LTTC for spades, but if 4N is natural, then it can include good raises to 5m too. I really don't know.
Posted 2012-June-22, 11:16
Looking for 3NT - asking if diamonds are likely to run for 6 tricks opposite a maximum 1NT call with a fit.
EDIT: Sorry - thought that the doubler was the one bidding 2♦ and 3♣. Looks perfectly natuaral to me. Opener is 6-4 and is interested in playing either 3♦, 3♣ or 3NT. I don't see why the double should change the meaning of the 3♣ call.
If 2♦ was waiting and game forcing (2♥ would have been negative) then responder is showing 5-6 in the minors and a good hand. This also assumes that the 3♠ rebid did not set spades as trump, in which case the 4♦ call would be a cue bid. I would think that if opener wanted to set spades as trump, he could have jumped to 3♠ over 2♦. So, I believe that responder is bidding naturally.
If 2♦ was negative or waiting, then the 3♣ rebid is usually used as a negative call. In that case, responder has long diamonds (again assuming that the 3♠ rebid was not forcing and did not set spades as trump).
As it makes no sense for 4♥ to be natural in this auction (assuming that responder has the minor suited hand described above, 4♥ must be a "mark-time" bid - requesting responder to do something intelligent, as opener cannot place the contract. It should show some willingness to play in a minor suit, since if opener wanted to play in 4♠ he could just bid it, and if he were going to play in spades at a higher level he could key card or just leap to slam.
Posted 2012-June-22, 13:08
1) strong diamond raise (prob Kxx support or such) suggesting diamonds are running looking for 3NT. 2♠ shows a solid stopper and indicates spades stronger than hearts.
2) Without the X, assume the passed hand bidding shows a max; 3♣ asks for a stopper for 3NT. With the X, I'm lost. 2♠ might be an invisible cue bid of the TO doubler's spade suit? And 3♣ would be natural (denying support for H's or a stopper in S's). But I'm totally guessing.
3) Depends on system. Hopefully, 3♣ isn't cheaper minor 2nd negative - in which case 4♦ is natural, but the auction is ugly.
In a 2♦ = GF, waiting; 2♥ = bust paradign (strongly preferred), 3♣ is natural and 4♦ would have to be discussed. I would prefer 4♦ is control showing, agreeing spades.
4) 4♥ totally depends on agreement in #3. If 4♦ was natural, so is 4♥. If 4♦ is a control, so is 4♥.
Posted 2012-June-22, 19:53
Responder rates to have 1 of three hand types and the same mechanism is used to
search for 3n. Both hand types are just shy of a 3d raise but are depending on
dia length and outside aces to supply the needed 9 tricks for 3n.
Responder hand should look roughly like
Axx xxx Axx xxxx
Axx xxx xxxx Axx
AKx xxx Qxx xxx
responder bids lowest suit with stopper(s) opener merely rebids 3d if no game interest
4d and even 5d are possible bids with varyng degrees of power and shortness opposite
a suit bypassed by responder. If opener is interested in 3n:
they can bid 3n
they can bid stoppers up the line if they do no have all of them
they can bid 2n to show a stopper in a bypassed suit but none above
examples (no opp bidding)
p 1d 1n 2d 2s 2n (interest in game heart stop no club stop)
p 1d 1n 2d 2h 2s (spade stop no club stop)
p 1d 1n 2d 2h 3c (club stop no spade stop)
note that this system also lends itself to getting to some very difficult 5/6?
of a minor contracts.
Kx KQx KQJxxxx x
Axx xx Axx xxxxx
3d 5d* note that if responder had bid 3n (club ace) instead
of 3d opener should bid 5d since it is probably safer than 3n
*if opener has one more dia one less club 6d:)
Using this sytem opener does not feel compelled to jump
to 4d since responder will invite game whenever there is
a reasonable chance at making it.