aguahombre, on 2014-February-26, 10:02, said:
As an outsider looking in to T-Walsh first responses, and after learning that Opener's rebids are not prescribed as part of the system --- it seems that the chief advantage to T-Walsh would be the ability to rebid 1 of Responder's suit to show exactly 3, eliminating that issue from all future checkbacks when Opener has the normal minimum opening range.
I cannot see how accepting with 0-2 and bidding something else with precisely 3 hearts would do anything other than clog up our auction (Do we then make "delay" reverses?). It might kill us when Responder is very light and we can no-longer bail out at 1H (an alleged advantage we don't have to begin with unless playing T-Walsh Responses).
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If you have a weak hand and a long suit, and partner shows 12-14 balanced, do you actually want to stop in 1♥? The chance that 1♥ is the last makeable contract by either side is almost zero. I'd want to bid 2♥ just to make the opponents' lives more difficult.
I don't agree that showing exactly 3 is best. I am a strong adherent of the "completion shows a 12-14 without 4 card support" camp, so it will be 2 or 3. It will not be fewer than 2 if you play that a 1
♦ open is long or has a shortage outside diamonds; now the 1
♣ open guarantees you have at least a doubleton in both majors.
12-14 is not guaranteed, as for me a 1
♣ open may have a shortage in diamonds, so it could be 15/16 in that case.
Playing a completion as non-forcing is better in my view. When responder is a minimum hand with a 5 card suit, I am happy to be able to pass. OK, going further is an option when 4th seat protects, but it is useful to have distinctions between various responder rebids/recalls(!).