If 4
♠ is agreed as a void-showing splinter, North should probably bid 5
♦. With 4
♠ known to be unknown, North's actual choice is understandable, because of the risk that 5
♦ would be interpreted as two key cards.
When North jumps to 6
♥, South might bid 7
♥. He also knows that the partnership is in unknown territory, so North's jump to 6
♥ probably shows what he had: a suitable hand where he doesn't know what any of the in-between bids mean. North is almost certain to have
♥A, and
♦K is also likely. If
♦K is missing, that's not the end of the world.
Going back a step, if South knew 4
♠ was undiscussed, it was unwise to bid it. The best way to find out what a bid means is by not bidding it, then discussing it later. And 4
♠ is hardly a panacea anyway. He would have done better just to start cue-bidding and try to find out about a diamond control.
By the way, with the North hand I'd have been raising to game.
This post has been edited by gnasher: 2013-August-23, 01:53
Everything broke nicely and 13 tricks were cold.
Who should do what differently?