2♥ = 5H + another
2♠ = 5S + a minor
2N = minors
All pre announced.
North meant to open 2♠ (5S + minor], but makes mechanical error by pulling out 2N.
South alerts 2N. An alert is expected by N as 2♠ should be alerted. East asks South, and is told that 2N is weak with both minors.
It is her partner's explanation of North's bid (not the alert) that makes North realise she has made mechanical error.
ISSUE A
2N was an "Unintended Call" (Law 25A1), which "a player may substitute his intended call for an unintended call but only if he does so, or attempts to do so, without pause for thought."
North only realises the mechanical error once South explains the 2N bid.
Does Law 25A1 apply here?
May North call director and seek to change her bid for the intended call of 2♠, or is it too late given her partner has explained the bid?
South has not yet bid (Law 25A2).
Or given does the explanation given by South (even though it was before South bid) mean North now has to just leave her bid as it stands?
ISSUE B
North didn't attempt to apply Law 25A (cos she didn't know about it!).
She now bids 5♦ over 5♣.
Is 5♦ a logical alternative to pass?
Or is she compromised by her partner's explanation of 2N.
NB For info if 2♠ had been intended (and was alerted, but not explained), then 2♠ - 5♣ would be pass or convert, intending to play in North's minor.
Converting 5♣ to 5♦ with North hand would therefore be perfectly normal after a 2♠ opening.
ISSUE C
When 5♦ returns to South it looks as if the wheels have come off somewhere during the auction.
Given 2♥/♠/N are all weak bids then 5♦ can't be a forcing bid, suggesting extra values/extra length.
May South pass here, or should they take other action?
ISSUE D
3♦ is 2 off.
EW call director at end of the play and say they would have doubled if they realised what was happening.
Frankly it should be evident to both EW that the wheels have come off. East holds a 5-card ♣ suit, and West (who made the final pass in the auction) is holding ♠xx ♥xxx ♦J9xxx ♣Kxx.
What action should director take at this point if any?
Should West be allowed to apply a retrospective double instead of her final pass?
If West had doubled instead of passing then, it's unclear that this would have ended the auction.
It is possible (not sure how likely tho) that NS might declare 5♠ making or 5♠X making.
Deep Finesse tells us that:
- 5♣ by South is 4 off
- 5♦ by North is 2 off
- 5♠ by North makes on the nose
- 3N makes up one by N/S.
As it happens 5♦-2 is a top anyway for EW, but it is the principles that we are interested in here!
Do you let the table result stand?
Over to you!