[sathyab]

When you hold a balanced hand opposite a two-suiter that's exploring slam possibilities you're often short of bidding room and have to use bids that combine cue-bidding with trump agreement which can sometimes lead to confusion. Case in point: I was watching this hand on BBO recently in a high-level game.

Scoring: IMP

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With opponents silent the bidding proceeds

1c 1s
1nt 2d(GF)
2h 3d
3h 3s
4d

2h was presumably natural and 3h possibly a cue-bid in support of Diamonds although at the time it was bid, it should be treated simply as showing cards in the suit as 3nt is still in the picture. While it's clear that 4d sets trumps, does it also deny club control ? If not, what would a 4c bid in place of 4d mean ?