Curtis Cheek and Huub Bertens put a good 6H on us yesterday with a sequence that started
2N-3C (regular stayman)
3H-3S (slam try confirming hearts)
3N!- (then cuebid-cuebid-keycard-6)
3N was properly alerted as a spade control. That was a new treatment I had not seen before. (Yes, I am familiar with replacement cuebids in other sequences.)
My question is "What is the best use for 3N in this sequence?"
Benefits include:
Plus... it's free!