Posted 2009-November-29, 14:16
If LHO is 1255 with ♠A, I can win ♥Q, lead a spade to LHO's ace, draw a second trump if they haven't played one, take a ruffing finesse in spades, and later lose a spade.
If he's 1165 or 2155, I can win ♥Q, lead a spade to the ace, win ♣A, cross to a diamond, play♠K, ♠10 covered and ruffed, diamond to dummy, ♠9 covered and ruffed, diamond. I lose a trump trick too, but that's the lot.
I can't see a way to cater for all of these distributions, however. To bid like this with only 5-5, LHO would have to have KQJ9x KQJ9x in each of his suits. Also, he'll probably play a second trump if he has one. If he doesn't, I'll play for him to be 6-5.
... that would still not be conclusive proof, before someone wants to explain that to me as well as if I was a 5 year-old. - gwnn
(1♦)-2♦-(ps)-2♥
(3♣)-3♦-(ps)-4♥
all pass