Problem 3 resolved

I bid 4C. The auction continued:

p 1C 2H x
3H 4C 4H 4S
x

I passed this. 4Sx was down 1 while 4H was cold, and we got a good score. Sadly partner's hand has been lost to the sands of time, but I think he was 6313. If you pass, partner probably balances with 3S and who knows what you do now (I'm not sure if lefty, who has a stiff club, would make the 4H bid if you passed.)