[antonylee]

Looking for input on some auctions that came up recently, and some variants thereof... (opponents silent throughout)

2♥ (weak) - 3♠: how do you play this? (I think BWS suggests ART, asking for control in the suit with step responses)
2♥ - 2♠; ...: I assume that 4m is a splinter raise, 4♥ good hearts and a fit. What's the difference between 3♠ (which I assume is forcing?) and 4♠ by opener?
2♥ - 2♠; 3any - ... what's the difference between 3♠ and 4♠ by responder?

[nige1]

antonylee, on 2019-November-11, 17:19, said:

Looking for input on some auctions that came up recently, and some variants thereof... (opponents silent throughout)
2♥ (weak) - 3♠: how do you play this? (I think BWS suggests ART, asking for control in the suit with step responses)
2♥ - 2♠; ...: I assume that 4m is a splinter raise, 4♥ good hearts and a fit. What's the difference between 3♠ (which I assume is forcing?) and 4♠ by opener?
2♥ - 2♠; 3any - ... what's the difference between 3♠ and 4♠ by responder?

Perhaps, we should step back... Presumably, 2♠ is natural and constructive. But is it forcing? Some say not but I prefer F1. Assuming the latter, you might agree ....
After 2♥ - 2♠ - ?? Opener's rebids...

• 2N = MAX 0-1 ♠s.
• 3♣ = MIN 0-1 ♠ 3+ ♣s.
• 3♦ = MIN 0-1 ♠ 3+ ♦s.
• 3♥ = MIN 2 ♠s.
• 3♠ = MIN (N/F) 3 ♠s.
• 3N = MAX 2 ♠s.
• 4m = SPL 3 ♠s.
• 4♠ = MAX 3622.

[igt3]

How are your weak 2-openings? Suit quality? Non vulnerable/vulnerable? Position? Can you expect opener to have a control outside his/hers suit?

I play it rather simple.

New suit is round forcing, normaly with no fit in openers´ suit. (why suggest another suit non forcing?)
Opener can support responer with a simple raise with minimum or jump with maximum. Or jump in a new suit as a splinter raise.
If opener has maximum and no fit for responder he/she bids NT or a side suit. With minimum opener repeats his/her suit.
Since opener is maximum we are in a game forcing situation. (So 3♠ from responder would be stronger than 4♠ if you play slow arrival)

2NT=forcing with fit (could be 2 cards). Then we respond as after Jacoby2NT.

Worked well so far.

[antonylee]

This is in a new-suit forcing setting. nige1's scheme looks useful and simple enough.