RunemPard, on 2013-January-07, 16:29, said:
Partner alerted my 2D bid as inverted...I had no clue how to handle this regarding the laws...but 3NT-1 undoubled would have been 21/22 MP. I was hoping to go -3 with 3NT making, but went for -4. I was shocked that my partner forgot that inverted is only for opening bids.
Out of curiousity, and I can take this to the other forum, what are my legal actions and how should I handle the MI? It appears that the opponents figured out that the 2D bid was natural and gambled on a 3NT game.
What to do when you have unauthorized information (UI):
1. Imagine that partner *had not* given misinformation. Pretend she had described your raise as exactly what you have: "standard raise, perhaps very light at this vul".
2. Determine what your logical alternatives (LAs) are had partner not given misinformation, for you & peers of your level. Here, for me pass is the only LA, but maybe you feel 4d is also an LA, it doesn't matter on this particular auction. (It would only matter if you are trying to claim that pass is not an LA, that no one of your peer group would ever consider passing in situation where partner correctly explained rather than misexplained. But clearly you should see pass is an LA here.)
3. If there is only one LA, take it. If there is more than one LA, determine what the unauthorized information suggests you do. Here, the UI suggests partner thinks you are stronger than you actually are, and might be doubling on that basis. So the UI suggests pulling because you are understrength. Since the UI suggests pulling over passing, the laws dictate that you cannot pull.
Here, your pull to 4d is against the laws. And here the game punished you without need for director rectification, since 3nt goes down. If 3nt was making, and 4d was a successful sac, a director would rule it back to 3nt-x making, whereas if 4d-x went for more than 3nt-x you'd get to keep your score in 4d-x. So you can see there is no way that pulling 3nt-x can ever work out for you, either it's wrong and you keep your score or it's right and the director reverts it to 3nt-x. So your only chance was to leave it in and beat it, and is the ethical option you are supposed to take.
[edit: correct some typos, misuse of UI vs. MI]
This post has been edited by Stephen Tu: 2013-January-07, 17:30