Garbage men have mixed results - your mileage may vary
Computer to the rescue
And the answer is...
But don't forget other considerations
Garbage Stayman bid
usually works great but I'm not sure when to use it. Playing
Duplicate matchpoint scoring, sometimes it seems the results are better just
leaving partner in 1 Notrump. Can you help give me some guidance?
question, and curious minds deserve good answers on their quest for
knowledge. First, let's assume you and your partner open 1
Notrump with a 15-17 HCP balanced or semi-balanced hand; while the point
range isn't relevant for our discussion, we need to use something as a
baseline to try various permutations for various responder hands.
simulation, let's assume the responder has a singleton or a void in Clubs
and no 5 card major. After plugging the data in a simulator,
running hundreds of hands that meet various combined HCP strength
thresholds, and checking the "double dummy" output to determine the
available tricks, we find:
||Making 1 Notrump
results, we can see that up to 5 HCP the responder is wise to make the
Garbage Stayman bid. Of course, this is a generalization
depending on Environmental
Factors. For instance, holding a singleton Club honor generally
helps offset the shortage in a Notrump contract.
conclusion, the 0-5 HCP guideline is a nice rule of thumb; that's 15-20 HCP
for partnership if using different 1 Notrump opening range.