jmcw, on 2011-October-01, 18:42, said:
Some discussion afterward leads me to believe I need better methods for super accepts! any suggestions?
Sorry, we seem to have sidetracked the OP, and I am as guilty as any. I think we need to firmly identify what the purpose of a super-accept is. My take on this is :
As a law abiding citizen, I use it to look for the 23 point 9 card fits. Hence the need for 4 card support opposite an initially assumed 5 card suit.
But not any fit works, so we need to decide what are the attributes of a hand that need to be shown to see it if will work. Opinions differ considerably. Some think knowledge of a responder shortage may be useful for opener to determine wasted values, some think showing doubletons is a good idea, some thinking specifically valueless doubletons, or conversely honour doubletons. You need to fix in mind what you are trying to do.
To my way of looking at it, the position of the honours does not matter that much. If you have a distribution of 5332 opposite 4423 and a combined AKQAKQKQ scattered among them, it doesn't make much difference where you place those values. For example in the 2 minors you could have Qxx xx opposite Kx Axx, or xxx Kx opposite AQ xxx, you choose, but you still lose 2 tricks, the third round of each being won by ruffing. The full distribution given above is worth 10 tricks.
Now make it 5332 opposite 4432 and it shrinks to 9 tricks. A whole trick reduction, in essence caused by the fact that mirrored doubletons mean opener has no ruffs. I think this is the biggest contributor to the difference between 9 tricks and 10, more important than the effect of responder shortages weakening opener's values in that suit, or other factors, and so the objective for me is to find out if there are mirrored doubetons.
Rather than tell the defence what declarer has, I prefer a 2M+1 super-acceptance so that responder, if in the borderline "about 23 points" category, with a 5332 shape, can show his doubleton. If opener's doubleton is different, he bids game, but if opener has a 4333 shape he signs off at the 3 level, as he has no ruffs. If responder has a borderline values hand with a 4 card side suit, then rather than show a doubleton he bids (transfers to) game regardless, as either this will give opener a ruff here, or it will be a double fit to provide an extra trick.
Is is worth opener super-accepting with a 4333 shape when he will always sign off over any doubleton? Yes, because opposite a 5422 (or more unbalanced) it is worth 10 tricks.
I play (when I can) a 15-16 1NT and will always super-accept with 4 card support, but I believe if you play 15-17 then the range is too wide for responder to have any chance of determining "about 23". I think you need to agree "top half" of that range to make it work.
The method of showing doubetons can be exact (such as my long post yesterday) or simpler with the acceptance that responder sometimes plays the hand, or if this is too much to accept, you can simply say opener always plays the hand, but if responder is 5332 with a doubleton major he gives up on showing it and just pots game or not.
You may not agree with my decisions, but do analyse what combination of holdings does not justify game on a 9 card 23 count. You may think something is more important than mirrored doubletons.
This post has been edited by fromageGB: 2011-October-07, 06:20