lucky555, on 2015-June-03, 00:18, said:
If you want to play a fancy convention for this , then use Kokish
you bid 2H( relay) , your partner bids 2S (must), you bid 2nt (showing 25+ and balanced hand).
This way, you showed 25+ and you are still at the 2nt level which allows you to investigate major fit (puppet), etc
In case it wasn't clear, given the forum, this is a common but minority treatment where after a 2♣ strong artificial and forcing bid and a 2♦ response (that can have a number of meanings depending on the pair including: Game forcing (3+); waiting (nearly automatic on anything); 1st negative (<8); etc.), then if opener makes a 2♥ bid it shows one of 2 types of hands:
1. A hand with primary hearts (possibly with a second suit as well, possibly single suiter)
2. A balanced hand even stronger than the 2♣-2♦-2nt sequence.
Responder in response to this 2♥ relay must bid 2♠, which is an artificial bid that allows the opener to describe which hand type they had.
With the strong balanced they bid 2nt (for me, at least 24+ (since 20-21 opens 2nt and 22-23 bids 2♣ then 2nt) but others might be 25+). Note when you get to these sort of point counts, it is very, very likely to be the minimum point value of any range just due to frequency of hands.
With the primary hearts, instead of the balanced hand, the opener instead makes a bid on the 3 level over the forced 2♠ response to show primary hearts and anything else about their hand (and again people play different things at the 3 level - easiest is just everything is natural, but there are very common switch treatments here if you ever get in more depth here).
I think this is a pretty good treatment overall, but it mostly doesn't matter what you do on really strong hands - especially at matchpoints - because they come up so infrequently. The most important thing is to be on the same page as partner.