Posted 2022-February-26, 15:46
In one partnership we play negative through 4S. In the other, we describe it as through 7S, but that’s never come up😀
The point is that we simply don’t play penalty doubles of their overcalls. Certainly 1C (5D) x is quite likely to be left in by opener, but the double wasn’t penalty and opener is permitted/ encouraged to bid with very shapely hands (including, on this example, no more than 1 diamond and extra shape).
Now, in real life, if an opponent overcalls 6S and partner doubles, I don’t think I’m pulling very often in either partnership.
As for the difference between doubling 4H or 4S, the double of 4H will quite often fetch 4S by opener so responder needs to be comfortable with that possibility. He needn’t have 4+ spades but, if not, he’d better be able to handle correcting the contract.
After a double of 4S, opener will rarely bid 5H, but rarely isn’t never, so responder still has to be prepared. It’s just that opener will pass 4S, rather than go looking for an 11 trick contract, more often than he will 4H, since he will, often have 4 spades and seek the 10 trick game.
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