[jules101]

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Your methods:

• weak NT, open majors with 4+ cards;
  
• 1m is natural, always 4+;
  
• minor suit based, so with 4m and 4M you open 1m;
  
• 1N rebid is 15-17, doesn't deny 4-card ♠ on this auction;
  
• responder can employ checkback Stayman with invitational values to find out more about opener's major suit holdings.

As East you are planning to bid 2♣ checkback over partner's 1N rebid (15-17), but North scuppers that plan.


Over 2♦ from North you consider 2♠ is probably GF, and probably implies longer ♥ than ♠.


West's 1N has denied 4-card ♥ with you, and if you bid 2♠ you may end up in 4♥ in a 4-3 fit with your lovely ♥ suit!


What is X now from East? Take out or penalties?

I know the smart people will say "it depends on a agreements", but how do the smart people recommend that we play double here?


What action do you take as East?

[mike777]

3d
edit iguess 1nt does not deny 4s.

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I can rebid 2s with 5h and 4s and 3h with 5h and gf.

[mtvesuvius]

This is an interesting auction. North didn't have enough to bid 1♦, but now has enough to bid 2♦ after opener showed extras?

In general, when the opponents intervene in these auctions, I like to play double as cooperative and value-showing: You're OK with partner leaving it in, and you're also OK with partner pulling. You don't have any other options, but have values so need to find a call.

Just on principle, X should be penalty since this auction does not exist, however it is equally relavent if South were to double instead of pass over 1♥.

With this hand, I would double.

[FrancesHinden]

I have enough high cards for game. RHO couldn't act over 1C but now has a 2D bid? I have a balanced hand, so I would just double and worry later about what it means. Partner will (should!) work out that I don't have short high cards in diamonds, because I might just bid 3NT given the vulnerability, so I either have this sort of hand or a trump stack. This sort of hand is more likely.