kenrexford, on Feb 10 2009, 10:22 AM, said:
North: Opens 1♦
South: GF 2♣ artificial response
North: 2♥ (four spades)
South: 3♦ (sets trumps)
At this point, North can predict a probable inability to gain anything from cues. So, he just bids 4♥ 1430 RKCB. South shows one (4♠). 5♣ asks for the Queen (4NT would be a signoff), and South shows it plus the heart King (5♥).
North now knows that he has no club loser and might have no problem in spades. So, he asks for the impossible spade King (5♠). South lacks this and lacks the club King, and he hates his hand, so he bids 6♦.
North lacks sufficient info to pursue the grand without bypassing 6♦. However, he does have ability to get out at 6NT. So, he makes one last stab, 5♠. This is strange, as it essentially lets Responder know that the spade ask earlier was fake and that he is instead looking for tertiary spade values. With a doubleton, Responder might get this right.
So, maybe.
I like this approach.
However I am not convinced South should hate the hand. South has two doubletons either of which could be useful. Over 5
♠ I might bid 5NT saying I don't have the spade king but I do have extras (not the
♣K either). Opener will likely be able to infer the third round spade control. In fact we would use 5
♠ here as a more generic - "Have you got anything else?". In context given opener has shown four spades with the
♠K south would be worth a jump to 7
♦.