shevek, on 2011-July-29, 07:19, said:
Over opener's 2NT, you planned 3♥. Is this non-forcing?
Over 2♦, is it normal to play 3♥ now as forcing? (2/1 then jump preference)
If you don't think this hand is worth game, is it okay to bid 2♥ now?
In SAYC, 1
♥-2
♣-2NT shows extras and is game forcing. Yes to the other two questions.
ArtK78, on 2011-July-29, 08:57, said:
The ACBL SAYC system booklet specifically states that a 2/1 followed by a jump raise of opener's major to the three level is game forcing - responder should make a direct limit raise of opener's major suit with three cards and invitational values.
Yes, although it's conceivable he has 4 hearts to go with his 5+ clubs and thought that 2
♣ was a better response than either Jacoby 2N or splinter.
aguahombre, on 2011-July-29, 10:37, said:
Yep. And, this is consistent with a thread last year (2009?) where AWM cleared that point up for us. 2/1 followed by 2M is definitely a 2-card stall with about 11 ish.
Two qualifiers:
First, if OP and partner have an agreement that 1
♥-3
♥ shows four hearts, then they need a second bid in the given sequence, and the 2
♥ rebid seems the most reasonable. That would mean that 1
♥-2
♣-2
♦-2
♥ shows 2-3
♥ and game invitational values.
Second, many responding hands with invitational values and 2 hearts will include spade stoppers, and those hands would bid 1
♥-2
♣-2
♦-2N. So, the 2
♥ rebid shows a preference for playing hearts over NT.