Posted 2021-March-01, 23:48
One of the things about matchpoints is that 3NT= ties 5♣=, and 3NT+1 beats 5♣+1. And the number of hands that can make 5♣ that can't make 3NT (and likely 4NT) are very small, and usually very obvious. "5m at matchpoints is an invitation to 6" is the joke.
Bidding minor slams at matchpoints is almost the hardest part of the game, because you have to decide at a very low level if you're willing to leave the safety of 3NT for a chance at a slam, knowing that if that chance is wrong, you're getting a bad score for stopping in 5♣. Yes, sometimes you can get out in 4NT with Kickback or the like, but that also loses if 9 tricks is the limit.
If you bid 3NT like "the rest of the room", you beat the ones in 6♣ when it doesn't make, and you beat the ones in 5♣ if you can squeeze out the tenth trick; and if your play is good enough for that club, then you're going to get the overtrick as often as the rest of the room. Sure, you lose to 6♣ making, but you'll have company, and you can survive the odd 40% board better than the odd 15% one.
At teams, like the BB, it's actually safer to go looking, because at worst you're -1 or -2 if it's wrong and you have to stop in 5. And sometimes the suit is safer than 3NT.
All that is theory only, not talking about this hand.
I think 2NT/2♥ is automatic, too. I have the heart stopper, I have zero interest in slam, if partner does, she has room to look. Partner bid 2♥ for a reason, and it wasn't just "We have game". Let's tell her what she likely wants to know first, and see what she wants to tell us. After 2NT, 3♣ seems auto, and we'll see from there. I like Mike's analysis (as is to be expected).
When I go to sea, don't fear for me, Fear For The Storm -- Birdie and the Swansong (tSCoSI)