[kenberg]

N has made it clear that he is not certain of the meaning of 2H. After that declaration, surely S is not allowed to jump to 6C. I don't see this remotely as a close call.

[Fluffy]

I assume you don't really need a BBF poll for this one, so to whoever says that 6♣ is the logical call I will tell them:

No. You are wrong, you have blatantly used the UI of partner not knowing he was on a GF situation to jump to slam to minimice possible damage. The only reason why you think 6♣ is a reasonable call is because of cognitive dissonance. That is, that your will to win has triumph over your ethics this time, and your brain is creating the ilussion that you followed right ethics because it is unable to sustain the truth.

Don't worry much because each and every brige player in the world has fallen to the same trap (no matter what they tell you)

[mycroft]

3♣ seems automatic. 4♦ seems brilliant, if it will be taken as a club splinter. I'm not sure I'd catch that at the table, and even if I was ready to catch it, I would expect around here for it to be an autosplinter for hearts instead.

6♣ means "170 is a bad score; -100 won't be much worse."

What to rule to, based on the UI, is interesting. Polling it seems right, but presenting a poll with "so, what was 2♥?" "You're not really sure, some sort of club raise." may prove tricky.