Playing matchpoint, partner opens 1 C, you bid 1H, partner bids 2NT (18-19), you bid 3D - check-back and partner bids 3H.
Assume you have these cards,
1) what would you bid?
x
AQJxx
AJTx
xxx
2) But besides what you would bid, what would 3SP mean here?
Benefits include:
Plus... it's free!