Match-point Pairs.
The opponents 2♥ is described as "Intermediate 11-14, 6-card suit". You have no particular agreements against this system
Partner protects with 3♣ and RHO takes a second bid. What now? 5C? 4C? Other?
If you choose the low road and bid 4♣ ...
So now you have pushed them into a gaming that they were not bidding on their own and the auction is back with you. Do you bid the game that you were not bidding last time? Or double? Or quietly pass?
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Over RHO's 3♥, I rank
1. 4♥ = CUE. Slight overbid.
2. 5♣ = NAT.
3. 4♣ = NAT. Slight underbid.
Now, after LHO's 4♥, I rank
1. 5♣ = NAT
2. Pass = NAT but not to my taste.
3. Double = PEN even less palatable.