A fit, a stopper, and a quest for blood.

[bucky]

♠6

♥AT82

♦AQ8

♣AKT96

 

IMPs. all red, 4th chair.

 

[P] [space]- [space]P [space]- [P] - 1[cl]
[1[di]] - 2[sp]* - [P] - ?

 

2♠ was a fit-jump.

what call do you make here?

 

if you bid 2nt here RHO continues with 3♦ and that comes back around to you.

if you bid 3nt, you play it there.

What are 3♥ and 3♦ here?

Assuming that you are playing 5-card major (therefore quite nebulous 1♣ opening), partner ought to be 5-5 or better in black suits for the fit-jump. Slam can be on if partner holds only SA. You may have a decent grand slam if partner has HK in addition. I think 2NT is awful (it doesn't even sound forcing). Either 3♦ or 3♥ is fine, but 3♦ preserves most bidding room.