[cencio]

During a bbo game I saw this auction. After reaching the contract of 4 spades responder bids 5 diamonds with empty in diamonds and asking bid for the queen of spades. the declarer responds 6 clubs having the queen and signaling the k of clubs, with subsequent closure at 6 spades.

I would like to understand what convention it is and how it works.

Thanks for any respons

[PrecisionL]

cencio, on 2026-March-19, 08:18, said:

During a bbo game I saw this auction. After reaching the contract of 4 spades responder bids 5 diamonds with empty in diamonds and asking bid for the queen of spades. the declarer responds 6 clubs having the queen and signaling the k of clubs, with subsequent closure at 6 spades.

I would like to understand what convention it is and how it works.

Thanks for any respons

This does not appear to be anything other then a Cue bid in diamonds showing interest in a spade slam. The whole auction needs to be shown to know what the exact meanings of 5♦ and 6♣ mean. You assumed Q♠ and K♣.

[cencio]

---

[jillybean]

1♠ opening bid
2♣ game forcing in a 2/1 auction
2♥ natural
3♠ unusual jump but agreeing spades
4♠ natural
5♦ cue bid in support of spades, void (Ace , King, singleton or void)
6♣. cue bid, K
6♠

This does not resemble an expert standard auction but got the job done.