Posted 2018-September-12, 13:02
How often will responder have a hand where the only issue is 'how many keycards does opener hold?' While this is true over 2N, it is even more so over 1N.
Of course, many non-expert players use keycard in situations where they are left guessing after entirely foreseeable responses, because they don't know how to bid cooperatively. My advice: learn how to bid cooperatively. It will improve your game, and make you a better partner.
On the example hand, the gadget admittedly worked out well, and even pairs with good methods over 2N might struggle to bid 7N with confidence.
My partnership would survive, because we have methods that allow responder to show a club slam try, and opener to show a good hand for a club slam, and then keycard info is exchanged but that isn't my main point.
My main point is that in most cases responder needs to hold a huge hand, as well as a good suit, in order that the simple 'how many keycards do you have' allows for accurate placement of the contract. One can play a lot of bridge without holding a combined 36 count.
So you are constructing a method that simplifies a very tiny percentage of hands, most of which can be reliably bid using other, more mainstream, methods and you are doing so at a tremendous cost.
I don't see the gain, for example, over 2N 4D 4H and then keycard. One must surely have 5-level safety if one is using keycard so how is the immediate bid better? Meanwhile, those of us who use texas, as here, have exclusion available after we transfer. While good hands with voids are not common, they do exist, and in my experience arise more often than our holding a good 16 count and having partner open 2N.
Meanwhile, anyone who thinks Texas isn't useful isn't thinking clearly or is not using transfers properly.
One of the biggest pluses of texas is (as is so often the case with good conventions) linked to when one doesn't use it.
Thus 2N 3D 3H 4H is a mild slam try in hearts. How else do you make a mild slam try? There are hands that offer a good play for slam when opener likes his hand, and yet are in danger at the 5 level when opener has a poor hand in context.
This method smacks of someone who encountered a hand on which the gadget worked well and then thought that that meant that the gadget was a good idea. As in most aspects of life, simple solutions are rarely good solutions.
Let me suggest a different approach:
Use 3S as a puppet to 3N, over which
4C is clubs, slam interest
4D is diamonds, slam interest
4H is both minors, short hearts, slam interest
4S is both minors, short spades, slam interest
Over 4C: opener bids 4D with all hands that have no interest in cooperating, and other bids are keycard responses. Same is true over 4D: 4H is 'I don't like my hand for slam'.
Note that responder is far more likely to be able to place the contract well if he first finds out that opener likes his hand. What does opener need in order to 'like his hand'? Aces outside of the suit, honours in the suit, a preponderance of Aces and Kings and a relative paucity of Queens and Jacks (outside of trump). On those infrequent hands where responder can insist on keycard, we use the next step over opener's rejection as mandatory keycard.
On the example hand, opener has a clear 'I'm interested' response. While he is short in clubs, he is laden with controls, has ALL of the side Aces and the club Queen. So we'd have no trouble reaching the cold grand. Btw, I defy anyone, not playing a relay method, to bid 7N thinking it was cold....one needs to know about the diamond holding...not just the Jack but the length as well, since clubs do not need to break.
'one of the great markers of the advance of human kindness is the howls you will hear from the Men of God' Johann Hari