[twcho]

At imp, red vs white, you hold Jxxxx QJ ATxx Jx
Your pd opened 1♦. You responded with 1!s. LHO overcalled 4♥ and pd raised to 4♠. The overcaller came in again with a double and his pd bid 5♥. What will you do now?
Pd　RHO　You　LHO
1♦　Pass　1♠　4♥
4♠　Pass　Pass　X
Pass　5♥　?

Do you think that forcing pass applies at this situation? How about the other vulnerability situation? If forcing pass available, will you pass?

[rogerclee]

This is not a FP situation at any colors.

This would be a forcing pass situation if one of you had shown a very strong hand. Nobody has done that here. Partner would bid 4♠ very frequently on 4144 and definitely on 4054; there is no reason to assume 5♥ is going down.

[han]

Now that we are on the topic, how about this one:

p - (p) - 1D - (1H)
3H - (p) - 5D - (p)
p - (5H) - p

Yes I know, strange auction but really happened. Is this pass forcing?

[gwnn]

certainly sounds forcing on general principles, but it's not like we'll bid 6D, so should be NF. (this was to Han, the other one is clearly NF)

[Sambolino]

first is clearly nf as it was pointed out; 2nd is nf only because of initial pass imo