How about this for a differences - I want to be able to make a revoke, and missort my cards mixing clubs and spades, hearts and diamonds or even bid out of rotation.
I want to look at opponents and their behavior, not count on speed of my ISP and computer ...
Right - top or bottom: -4000 since ♦ were 7-6
Yuan suggests axing the partnership - who axes who, or assign the blame.
Suggestion: since a decision was made to bid on 7 level, why not bid 7♦?
How big is the risk? Partner must have at least 8 solid ♥, A♠, A♦ (he is not bidding a grand with nothing in ♠ and ♦ loser), put together K♠, AK♣ = 13 tricks, may be more.
Unless.... his ♦ control is also a void.