kenrexford, on May 17 2009, 01:01 PM, said:
Phil: The question is not whether 3♥ is forcing. The question is whether, in the long run, you would rather double for penalty or double for takeout. My thought is that a double for takeout seems wildly more likely, because you rarely have an auction die at 3♥ when you have a heart stack. Why? Well, if you are looking at KJ10xx in hearts, and Opener has four hearts, then Responder probably doesn't have four hearts. Ergo, he probably just bid 3♣ because he has 5+ HCP abnd four spades. So, you'll double, he'll laugh and bid 3NT, and your hand will now be on the table for Declarer.
No, the question of whether or not 3
♥ is forcing has everything to do with whether or not our double is penalty or takeout.
Earlier you say, "3
♥ will be rarely passed". I would suggest that if we are looking at a hand that wants to take a piece out of 3
♥, something like:
Kx
AQT9x
Axx
Axx
that responder is, in fact, about to pass 3
♥ and you'll collect 100, 200, 300 instead of 2/5/8.
Now, if you instead hold:
xx
KJTxx
AKx
xxx
where you'd sort of like to double 3
♥, you shouldn't, since they are more likely to bid game if you pass, and if you double they might slither into 3N. But this has nothing to do with whether or not your double is better used as takeout, but has everything to do with tactics in the situation at hand.
Really, what kind of hand would you want to double as takeout on? You suggested a 4
♠ / 6m. Some of these hands with good playing strength could come in directly over 2N.
"Takeout" makes even less sense. Why would we suddenly wade in at the 3/4 level when LHO is unlimited? Most of the time when we hold a 4=0=(54) (funny symmetry to the OP's hand btw), pard is looking at a ?=5=?=? yarborough and will just throw up when you double.