jtfanclub, on May 12 2008, 09:41 AM, said:
Quote
Agree with the directors; playing lebensohl, you can bid 2NT to get to 3 clubs to play, and double then 3 clubs for an invitational hand. 3 clubs direct is default forcing, just like 3 hearts direct would be over 2 spade interference.
You think the *default* is Lebensohl?
So when the auction goes 1NT (2
♥) 2NT, you alert it if 2NT is non-forcing with invitational strength and at least half a heart stopper, and you don't alert it if it's a relay to 3
♣?
3
♥ is forcing because 1NT-P-3
♥ is forcing in SAYC. Systems off should mean systems off. It should not mean Lebensohl. If you make a call that's part of Lebensohl, and I don't just mean 2NT, then you should alert it.
The issue is not whether a bid is alertable. The issue is whether the agreement is "normal" or "unusual."
In this day and age, Lebensohl is the default agreement among most tournament players. I would venture to guess that 2NT natural and invitational in competition is an unusual agreement among all but novice players.
Nevertheless, 2NT natural and invitation is not alertable (comes under the heading of "Natural calls not specifically noted" in the ACBL Alert Chart - no alert), and 2NT Lebensohl is alertable (comes under the heading of "All other conventional and/or artificial bids" in the ACBL Alert Chart - alert).
As for other methods used for 2NT in competition, I am sure there are many who play Reverse Lebensohl, Rubensohl, or something else. As with Lebensohl, all of these 2NT calls are alertable.
As for your last point, about 1NT-(P)-3
♥ being forcing in SAYC, I assume you are comparing that to an auction 1NT-(2x)-3
♥, where the opponents have overcalled 2 of something (other than hearts). If the "standard" meaning of 3
♥ is forcing and the partnership has agreed that 3
♥ in this sequence is forcing, it is not alertable. That is true no matter what method the partnership is playing over interference. The ACBL definition for a call that is not alertable is a natural call with about the expected shape and strength for the call. 3-level natural responses to a notrump opening bid "whether a jump or not" are specifically listed among the responses to a 1NT opening that are not alertable. I assume by "whether a jump or not" is not a reference to bids made in competition but rather a natural 3-level response to a 2NT opening bid. Nevertheless, if the 3 level suit bid in competition is natural and is roughly equivalent to a 3 level suit bid not in competition, it is clear that there is no alert. If the 3 level suit bid has some meaning that is "highly unusual strength, shape, etc.," then it is alertable.
1♥-1NT-2♦-3♣
P- P- 3♠- P
4♠-X-AP.