[naskoSM]

In "A primer on reverse bidding" the advice is:
If you recognize that you need to understand and use reverses, but are not willing to learn either the lebensohl-like or Ingberman, then probably you should use 4th suit forcing to establish the gf and use bids of opener's suit as weak preferences/raises. That approach, flawed though it is, is better than no agreement at all: ... no one is passing 4th suit no matter whether they understand what you are doing.

But what about the situation with weak 5spades-4hearts hand in responder? I'm used to responding 1♠ after 1m opening and, after 1NT - 2♥.

After 1♣ - 1♠ - 2♦, with random partner (interm) I had 5-4-2-2 with 7 hcp - 3 queens and J - and bid 2♥, reasoning that partner will recognize weak 5-4 and we can stop at 2♥, 2♠, 2NT or bid game when partner is maximum. Partner interpreted it as 4th suit GF and bid game with 16 hcp.

My trouble: the reverse bid in fact forces ME to bid. Is it propper logic a forced hand to re-force?

[Fluffy]

When you have 4 card hearts forget about playing on them if partner has a 2 suiter in 2 different suits, it has no sense.

If you had 5-5 some will show that shape by jumping to 3♥, but that is obviously forcing.

Playing in the 4th suit with weak hands is impossible, no systeam allows you for it.

[naskoSM]

I agree that on the actual board the proper natural bid with ♠Q10xxx-♥QJxx-♦xx-♣Qx probably is 2NT.

But what about weak 5♠-5♥ hands? Opener can still have 3 cards in major.

And, in the very diferent 1♦-1♠-2♣-2♥ case, is 2♥ still the 4th suit forcing, even for 1 round?
What to bid with 6 hcp and 5-5-2-1?

Please, outline your methods for developing weak 5-5 in majors after 1 minor opening.
Is there any gadget, for example 1m-2♥ for exactly this type in responder, which still allows low level contract?

[P_Marlowe]

Hi,

weak responding hands with 5-4 in the majors are a known problematic
hand type.
To deal with those there various solutions, which will allow you to
find your 4-4 fit, but since this is the B/I forum, I wont menation
one of the more popular / well known conventions.

My suggestion - reopen a new thread in the A/E section, and you will
get some answers, how to deal with this hand type.

If you have no special gadget, than simply forget to play in the 4th suit,
if opener has already shown 5-4 in his suits.
The reason is, you need opener to have a 5440 shape or, if you are 5-5,
you need opener to have a specific 5431 shape, and the frequency is not very
high, you also need to exclude responders hands with 3 card support for
openers first suit.

With kind regards
Marlowe