What does this sequence show?

[mindofmike]

In the sequence 1♦-1♠-X-XX, how is the redouble typically defined? (The double is, of course, negative.)

 

Two ideas I had:

 

1) Since the double of an artificial bid is a lead direct, the redouble of an artificial double should be as well; in this case, redoubler is saying, "Lead a heart!"

 

2) I've heard of something called a Snapdragon double, which applies after 1x-1y-1z; a double here shows a decent hand in the fourth suit and tolerance for partner (maybe Hx or xxx). Since the double, again, was effectively a heart bid, on the given sequence the redouble would be a decent hand (7-10?), five good clubs, and spade tolerance. This leaves 2C free to show the same hand, but with at best two small spades.

 

Is there a standard interpretation for this bid, and if so, does it have a name?

 

Mike

[kenrexford]

There are at least three interpretations I am familiar with and personally like.

 

One is snapdragon, as mentioned. The purpose of snapdragon appears to be to make 2♣ suggest spade intolerance as normally one would expect a 2♣ call here to imply tolerance for a spade rebid.

 

The second is Rosenkranz, showing spade lead tolerance (Ace or King).

 

The third is Reverse Rosenkranz, where the 2♠ call shows spade lead tolerance and the XX, appropriately, poor trumps.

 

I have no idea what is "standard" here any more. Undiscussed, I would expect Snapdragon.

[Finch]

Undiscussed, I would expect redouble simply to show a good hand. My general rule in any undiscussed sequence is to assume the simplest possible interpretation and generally redoubles mean "I have a good hand".

 

The most commonly played convention, I think, is the Rosenkranz redouble where it shows Ax or Kx (some play Qx as possible) and the values for a raise to the 2-level.

 

Other agreements are obviously possible, but only (as you might say) by agreement.