[lycier]

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The explanations of 2♠ are "Fourth suit forcing--5+♦,4♠,12hcp+,13Tps,forcing to 3N".
I think this explanations are incorrect.

1♣--1♦
1♥--1♠
?

I think 1♠ is 4th suit without 4 card ♠,but 2♠ is a reverse bid with 4-card ♠,it is just in line with responder's original intention.
any ideas?

[gordontd]

lycier, on 2015-February-08, 02:49, said:

The explanations of 2♠ are "Fourth suit forcing--5+♦,4♠,12hcp+,13Tps,forcing to 3N".
I think this explanations are incorrect.

1♣--1♦
1♥--1♠
?[/size]

I think 1♠ is 4th suit without 4 card ♠,but 2♠ is a reverse bid with 4-card ♠,it is just in line with responder's original intention.
any ideas?

I wouldn't describe as "fourth-suit forcing" a bid that shows four cards in the suit. "Natural and forcing" is a better description.

As regards terminology, 2♠ is not a reverse because it is a jump bid.

It's common in my experience to play 1♠ in this auction as natural, forcing for one round only, and 2♠ as FSF. However, when playing Walsh-style responses there's some merit to exchanging those meanings since the only hands that can have four spades are strong.

[georgi]

Explanation is corrected to natural and forcing in next version.