Years ago, Dorothy Hayden introduced a bid she called the Cooperative Slam Double.
As I remember it, this was a method to help a side who had competed in the bidding decide whether or not to sacrifice after the opponents bid a slam (assuming that a sacrifice would not be worse than letting the opponents bid and make a slam).
In immediate seat (after the opponents bid a slam) one had 2 options:
Double with 2 defensive tricks (partner was expected to pass this), or
Pass with 0 or 1 defensive trick. Partner would then 1) double with 1 defensive trick (then the original passer will pass with 1 defensive trick, and will pull/ sac with 0), 2) take the sac with 0 defensive tricks, or 3) pass with 2 defensive tricks.
I think this is how it went. It made more sense to me than something like the Negative Slam Double.
Does anyone play this any more? Is this a good convention or is there something better?
TIA
Benefits include:
Plus... it's free!