SteveMoe, on 2015-April-07, 22:43, said:
FP requires both a fit and GF values at the 4-level (inv+ at the 5-level). Neither have been proven. Even with the meta agreement that sets a FP when opponents are CLEARLY preempting, we still need an established fit.
None of these conditions are met. So not a FP. PASS simply says I have no more to add.
Your rule for what constitutes a forcing pass isn't wrong (and certainly has the advantage of simplicity) however it isn't usual to have a fit in order for a pass to be forcing. One of the most powerful uses of a forcing pass is the ability to convey the message of a partial fit without committing our side to a dangerous level.
For example in a less ambiguous auction like:
1H (2S) 3C (4S)
?
Given that 3C is GF, I think forcing passes should apply. By making a forcing pass you have the ability to show an offensively orientated minimum hand without committing your side to the 5 level which I think is a huge benefit. With good agreements about continuations you also get far more precision in slam auctions, especially when opener holds a flexible forward going hand. Giving up the chance to defend 4S undoubled is a very small price to pay for the benefits.
kenberg, on 2015-April-08, 07:41, said:
I expect that on this auction I, as opener, will fairly often have a 1D bid based on 12-14 highs. I would like to be able to express that fact by passing. When I have this minimal hand, partner, unless the opponents are being very inventive, will have quite a good hand and he will not need either me or a forcing pass agreement to tell him he should act.
Your assertion "...unless the opponents are being very inventive, (partner) will have quite a good hand..." is the exact reason that you might consider using a forcing pass in this auction.
I also think you're missing the benefits that you gain by playing pass as forcing. Rather than being forced to pass on all minimum hands (or force our side to the 5 level), you can differentiate between an offensive minimum and a defensive minimum and leave the final choice up to partner.