[the hog]

 gnasher, on 2011-August-25, 11:43, said:

My first thought was that it was obviously an autosplinter for hearts.

This was my first thought as well. However on reading Justin's post, I agree that his interpretation makes more sense.

[whereagles]

 cherdano, on 2011-August-25, 21:05, said:

I am sure someone from Europe would post that it obviously shows 15-17
In a style where you always open 1NT when in range with a 5-card major, I thought it's normal that 2NT in the auction above is 2-way, either 12-14 or 18-19; the latter will make another move towards slam later.

The rebid

1M 2x
2NT

has many standard meanings. It's mostly system-based and it depends on your NT structure (obviously) but also on stuff like whether or not you open 1NT with 5-card majors.

In sayc I believe it means good 13-14. With 12-13 bad you rebid 2M instead.
In SEF (french standard) it's 15-17. With 12-14 you rebid 2M.
In 2/1 it's 12-14 or 18-19. With 15-17 you rebid 3NT.
In ACOL I believe it's 15-19. With 12-14 you open 1NT.

I might be slightly off in the above, since I usually brew my own systems and don't keep up with the latest doctrinal developments

[Zelandakh]

 whereagles, on 2011-August-26, 04:24, said:

The rebid

1M 2x
2NT

has many standard meanings.In ACOL I believe it's 15-19. With 12-14 you open 1NT.

In Acol it is 15-16 and non-forcing. If you choose to bump up your 2/1 strength then you can play it as GF, commonly either 15-17 or 15-19. However this is NOT standard Acol.

[Fluffy]

assuming 2NT shows 2+ hearts, this would show for me the same as 1♥-1♠-1NT-4♦ and 1♥-1♠-2NT-4♦ wich is autosplinter in my case.

[Phil]

I thought 1♠ - 2♥ - 2N - 4♣ was the auction that people actually needed to discuss. 4♦ has to be a spade splinter.

Traditionally these 2nd round splinters have required four trump. However, there seems to be a trend of making an immediate forcing raise or even bidding 2♣ with most hands that contain four trump, so perhaps 4♦ should be sensibly used as a hand with three trump but some distinguishing feature like no control in the 4th suit.

[whereagles]

 Zelandakh, on 2011-August-26, 06:11, said:

In Acol it is 15-16 and non-forcing. If you choose to bump up your 2/1 strength then you can play it as GF, commonly either 15-17 or 15-19. However this is NOT standard Acol.

That's why I said "I believe". I'm not sure Anyway, I did see an expert pair playing it as 15-19 and other recommending it, but perhaps they're mavericks.

[whereagles]

 Phil, on 2011-August-26, 07:28, said:

I thought 1♠ - 2♥ - 2N - 4♣ was the auction that people actually needed to discuss. 4♦ has to be a spade splinter.

Traditionally these 2nd round splinters have required four trump. However, there seems to be a trend of making an immediate forcing raise or even bidding 2♣ with most hands that contain four trump, so perhaps 4♦ should be sensibly used as a hand with three trump but some distinguishing feature like no control in the 4th suit.

I seem to remember something in Fred's lectures about delayed splinters being 3-carders...

[gordontd]

 whereagles, on 2011-August-26, 08:13, said:

That's why I said "I believe". I'm not sure Anyway, I did see an expert pair playing it as 15-19 and other recommending it, but perhaps they're mavericks.

I think it is pretty standard these last twenty years, though there are probably still some who play it the traditional 15-16.

[Lurpoa]

 CSGibson, on 2011-August-25, 09:15, said:

We had the following auction playing 2/1 game forcing:

---

---

Despite being an experienced partnership, we had never discussed this auction. Agreements are that 2/1 is always game forcing, even with a suit rebid; no strong jump shifts; and we do not use an immediate Jacoby 2N or splinter if the most important feature of our hand is a source of tricks. 2N indicates a balanced hand with the outside suits stopped; 2♠ would be our default rebid.

What do you think 4♦ should mean? Is it obvious?

♥ ♥ ♥

I keep on repeating myself, yes ♥!
It is all you want, but you must agree with partner.

You cannot trust that she thinks the same "should be" as you, without prior discussion.

♥ ♥ ♥

[gnasher]

 Phil, on 2011-August-26, 07:28, said:

I thought 1♠ - 2♥ - 2N - 4♣ was the auction that people actually needed to discuss. 4♦ has to be a spade splinter.

If 4♦ is a splinter for spades, what other meaning might you assign to 4♣?

[Phil]

 gnasher, on 2011-August-26, 16:26, said:

If 4♦ is a splinter for spades, what other meaning might you assign to 4♣?

Ger.....

No I can't even say it.