Nope, what is it? Nothing shows up in my Google searches other than plain old "false cards", which are fairly obvious. I don't remember bothering to name such a thing.
Basically the idea is that you assume you have, say, QT doubleton in a suit, dummy has J9x, and declarer is presumed to have the rest of the significant cards in the suit - perhaps the suit opened.
Declarer leads the A, parter plays low, dummy plays low. Do you discard the Q or the T?
Since you have to discard a non-small card declarer will know you have either a singleton, or QT doubleton, because with any other holding you'd play something else. If you have T singleton, there is nothing declarer can do about it except lead small to dummy's J at trick 2. However, if you can convince declarer you have Q singleton, the right play is to hook the 9 in dummy. Thus, playing the Q at trick 1 is a mandatory false card - discarding the ten will never gain, discarding the Q puts declarer on a genuine guess.
At very high levels, this gets further randomized because declarer will pickup on the Q likely being a MFC, and thus work to otherwise resolve the guess and get it right (e.g. play other suits and using deductive reasoning from that. - so at very high levels the winning strategy is actually to make the MFC most - but NOT ALL - the time, at random.
Right, this just seems like basic card tracking and reasoning, which is fun when figuring it out, and then not fun once it becomes routine. When you present a situation with only two options and one is worse than the other, you will have a hard time convincing me there is a lot of depth.
On the other hand, for the declarer it is just business as usual: you try to navigate the tricks making as few guesses as possible. At some point realize that seeing the Queen doesn't always mean a singleton, so you put that in the "guess" category, but the actual process isn't effected.
If you're doing that routinely, and actually getting it right, you could make a good living playing professionally. Either you were very, very good, or there was a lot of depth you were missing out on.
I take your point, and I'm enjoying discussing this. I was never all that good, although we did find the time for a dozen hands or so a day for months at a time. I just remember being bored by the "deeper" things, which my friends (those who were much better players) found interesting. Which is mainly to say, as the OP was bored by go, he may also be bored by bridge.
Nope, what is it? Nothing shows up in my Google searches other than plain old "false cards", which are fairly obvious. I don't remember bothering to name such a thing.