Posted 2010-March-22, 11:01
As the 'top cannuck [sic] player' in question, I didn't expound on my comments when jb asked, but a factor in splintering here is that, really, the sequence is near-perfect!
We have no minor Ace....but we are splintering to a level that makes it very, very easy for partner to cooperate with a slam move.
One issue that seems rarely to be explicitly discussed, when talking about splinters, is the distance between our splinter and our game. Thus, splintering into 4♦, when hearts are trump, is a very, very space-consuming bid and in my view should only be done on a narrow range of hand types, since we have no room for exploration below game. My guideline (and I agree with the terminology of guideline, tho some are very strict) is that a splinter into the suit below our game promises either 1st or 2nd round control in the 2 side suits. But when we have this much room (ie after 3♠), we usually rate to be able to clarify our control issues in time. Thus over 4♣ (I am ignoring uses of 3N in the B/I forum), my 4♥ would deny a diamond control, while over 4♦, I don't mind 4♠....it isn't a slam force.
BTW, use of 3N here by responder, whether it be frivilous or serious, would help, but as I say that is not, imo, a B/I issue.
BTW, I also added to jb that my rationale (she didn't want to use my 'learn to play bridge' argument) was that 3♠ was the least evil (ie least distortion).
'one of the great markers of the advance of human kindness is the howls you will hear from the Men of God' Johann Hari