[lycier]

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I am wondering why opener jump bid 3♥ instead of 2♥.
What's the difference between rebid-2♥ and rebid-3♥?
Assume that reverse 2♥ is not forcing a round,I can say for sure that reverse jump 3♥ must be forcing a round.
So I think 3♥ should be a forcing bid,but its explanations don't say that.

[Bbradley62]

lycier, on 2015-March-07, 05:27, said:

... I can say for sure that reverse jump 3♥ must be forcing a round.
So I think 3♥ should be a forcing bid, but its explanations don't say that.

If South had a hand that could force to game opposite a 0-count, he would have opened 2♣; failing to do so limits his hand to 22 total points. Therefore, 3♥ cannot be forcing.

I agree with the human Souths who opened this hand 2♣, although I know a lot of players don't like to do that with a two-suiter. GIB doesn't open 2♣ because he counts his hand as 22 total points and won't open 2♣ unless he either has 23+ total points or intends to rebid 2N showing 22-24 HCP.

[Bbradley62]

Human Souths made all sorts of choices in the balancing seat. Here's the one you're looking for. The differences are:

• 2♥ can be bid with simple reverse strength (16) whereas 3♥ requires more (20), and
  
• 3♥ requires better ♦ than 2♥ does, because if partner chooses ♦ (as happens on this hand) he must do so at the 4-level.

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[Stephen Tu]

I'd prefer 3♥ to show 5-6 rather than simply being stronger than 2♥.

[lycier]

Bbradley62, on 2015-March-07, 07:59, said:

Human Souths made all sorts of choices in the balancing seat. Here's the one you're looking for. The differences are:

• 2♥ can be bid with simple reverse strength (16) whereas 3♥ requires more (20), and
• 3♥ requires better ♦ than 2♥ does, because if partner chooses ♦ (as happens on this hand) he must do so at the 4-level.

Very good reply,very reasonable explanations.
However I still think 3♥ should be forcing a round,even though it is very reasonable for what you said.
Usually it is unnecessary for opener to jump reverse bid showing strong hand,if it really do so,it should show a decent strong hand with good suits distribution.

[iandayre]

Standard rules of reversing apply where responder kept the bidding open. If responder passes the opening bid, no rebid by opener is forcing.

[lycier]

This hand played by me just now.

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Jump reverse 3♠ is really forcing a round.
Maybe you ask me why not open strong 2♣?
Two suited in strong hand is forbidden in opening strong 2♣.

[Bbradley62]

lycier, on 2015-March-07, 21:53, said:

This hand played by me just now.

Jump reverse 3♠ is really forcing a round.
Maybe you ask me why not open strong 2♣?
Two suited in strong hand is forbidden in opening strong 2♣.

It's "forbidden" by you and many other players, but not by GIB. GIB did not open 2♣ because he counted his hand as 15 HCP + 5 distribution points = 20 total points, which GIB thinks is not strong enough for 2♣. GIB never counts tricks, only points.