helene_t, on Apr 12 2010, 11:17 AM, said:
Maybe I have developed bad habits from playing in weak fields. But I don't think 2♠ with this hand would be very dangerous. Neither opp will pass his p's double with less than four spades. Even if one opp has four spades, they may not be able to double, or occasionally they may not pass the double even with four spades. If we get to 2♠X we haven't lost the board yet. We may go for 1100 against a vulnerable slam.
Hey Helene,
If you always overcall 2S in weak fields, you will definitely get good results. But if you always passed in weak fields, you would also get good results. So it might be hard to say that 2S>p even if 2S isn't that dangerous, because you don't really know how much you've gained.
That said, I'm a big believer in preempting aggressively against bad opps, since most of them know what to do in constructive auctions most of the time (except slam bidding), but have poor judgement.
At imps, it seems like there isn't a huge amount of upside towards preempting here. You're unlikely to steal or talk them out of a game, and even if you happen to steal on their hand, if you go -200 or -300 you haven't gained much vs a white game.
If there is not much upside and not much downside, consider that you are hurting your bidding a lot when you have a real 2S bid. Partner will make less accurate decisions since you have a wider range, so it'd be better to keep a narrower range if the hands you add into the 2S bid aren't benefiting you very much.
At matchpoints there is a lot more upside to preempting, but there is a lot more downside, you could just go for 200 on a partscore hand which is terrible.