[123ekim]

we are playing 2/1 in a sanctioned ACBL tournament
North bids 1 spade-- South bids 2 hrts--North bids 3 dmds-- South bids 3 spades--North bids 4 hrts (opps ask and are told that it is a cue bid)--South bids 4NT--North responds 5 clubs ( opps ask what does that mean and South states that it is a 1430 response showing 1 or 4 controls in SPADES)-- South bids 5 spades.

North originally thought he should be responding in hrts so now he corrects his mistake by bidding 6 spades ( he has the AKQ of spades and no other aces)

1. Did South make a mistake in fully describing his partner's bid?
2. North certainly took advantage of his mistake based upon South's explanation. Do the opponents have any recourse?

[RMB1]

I'm not an ACBL director but the laws are the same and (in this case) the adjustment would be the same.

123ekim, on May 21 2010, 07:19 PM, said:

1. Did South  make a mistake in fully describing his partner's bid?

2. North certainly took advantage of his mistake based upon South's explanation. Do the opponents have any recourse?

1. No

2. It appears that passing 5S is a logical alternative: RKCB bidder is in control of the auction. 6S is suggested by the unauthorised information. So (assuming 6S made) an adjustment to 5S making the same number of tricks appear appropriate.

[dake50]

1. Did South make a mistake in fully describing his partner's bid?

No, I believe that is their understanding for which is 'keys' suit.

2. North certainly took advantage of his mistake based upon South's explanation. Do the opponents have any recourse?

No, I think 6S was going to be bid always.
I heard this auction and expected 6S blast. Now cannot as partner key-asked ??!
S-AKQxx got delayed support and Partner keyed for slam?? No adjust!

[Mbodell]

I think you need to figure out what 5♠ means in their system. If it is clear that this means to play (and therefore that 4nt was an ask in spades, and therefore that 5♣ undersold our spade key cards) then 6♠ is likely fine.

If, however, this instead is a K ask (cheapest step 5♦ would be Q ask in hearts, now 5♠ might be a K ask in hearts) then pass isn't a LA but neither is, likely, 6♠.