[Lord Molyb]

---

After south (me) shows both majors, west makes a natural 2 spades bid, which is passed out.

[Stephen Tu]

While we might want to beef up requirements for West to bid 2s here, I do think it should be natural. doubling 1♦-(2♣) doesn't absolutely guarantee both majors, unlike doubling 1♣-(1♦), one is allowed to double with good hands with say hearts and diamond support, or hearts and a club stopper, planning to bid diamonds/NT over spade bids.

Besides sometimes it can be right to play in spades even when RHO has 4 cds in the suit. While it's reasonable to not have methods to play in a suit when an opponent has shown 5+ cds, it's arguably wrong when they can have 4 little only, even if 2c-dbl did guarantee spades.

[Lord Molyb]

This might not be the best example- I had a similar hand that was something like this:

---

(this wasn't the hand but it was the bidding and point count and distribution)
I can easily have 5-6 hearts, since the bidding suggests I might have a hand not good enough to bid 2♥.

[georgi]

For hand#1 it's not against shown information by South(or Doubler) as that shows at that time 3+3+ but also could be done with i.e. 4-2 if that's hand with at least invitational values.

If responder bids some major and Doubler continues with i.e 2N, his majors would be 3- cards in bidded and 4 in other major.

So 2♠ comes normally with required points. South could have 4♥ just testing whether their hands might have fit in hearts.


For the hand#2 GIB having that hand, approx always unless it's quite rare 2♥, bids 1NT. As here South promised at least 4 hearts.