Kungsgeten, on 2015-October-06, 23:24, said:
This will be rare, but sure it can happen. If opener hasn't got 17+ then he has 12--14 NT (in our current version of the system, Swedish Club usually includes 11--13 NT instead so then it is even less of a risk). So for us to have the majority of the points opener will have 12--14 NT and responder will have a hand with 7+ hcp which couldn't act vs this weak NT hand. If this is the case then opener would also require a hand that would have wanted to balance, playing a natural system.
Worst case scenario would be: Opener has 4-4-1-4 and 12-14 (we treat this pattern as balanced, since we do not play a Precision 2D opening). Responder has something like 2-4-4-3.
I don't think this "worst case scenario" is as rare as you make it out to be. And even with 4=2=3=4 or 4=2=2=5 I can see responder having trouble coming up with a bid.
If opener really has 4=4=1=4 (he could just have a mundane 4=4=2=3 instead), there is even some chance that responder has a trap pass with a diamond stack...
It's even worse playing Polish rather than Swedish, of course, where opener could have a full 14, or a (34)15 too good to open 2
♣...
And in my T-Walsh system I play 14-16 in 1st-3rd seat, but 15-17 in 4th, and I would recommend that for Swedish Club also, so in this particular position...
"One of the painful things about our time is that those who feel certainty are stupid, and those with any imagination and understanding are filled with doubt and indecision"
-- Bertrand Russell