[BLML] Logic (was Klaatu) [SEC=UNOFFICIAL]

richard.hills at immi.gov.au richard.hills at immi.gov.au
Tue Jun 19 07:45:00 CEST 2012

The 1997 Definition of "convention":

"Convention — 1. A call that, by partnership
agreement, conveys a meaning other than
willingness to play in the denomination named
(or in the last denomination named), or high-
card strength or length (three cards or more)
there. However, an agreement as to overall
strength does not make a call a convention.
2. Defender’s play that serves to convey a
meaning by agreement rather than inference."

Steve Willner, August 2004, defining a pre-
existing implicit partnership understanding:

For example, if we agree to play a certain
range for 1NT, other openings deny a
balanced hand in that range, even without
explicit discussion.

Richard Hills, August 2004, redefining a pre-
existing implicit partnership understanding:

Naaah. Steve has led a sheltered life. I
suggest that he reads Mike Lawrence's first
book (of many books), "Judgement At Bridge".

In it, Lawrence related how a Little Old Lady
adopted the old-fashioned advice of Charles
Goren, "Don't open a balanced 16-18 1NT
with a worthless doubleton!"

Since the LOL held 16-18 balanced with a
worthless doubleton in clubs, she was
compelled by her Gorenish system to open
1C instead! :-) :-)

Richard Hills, June 2012:

Under the 1997 Definition of "convention", a
Gorenish 1NT opening bid is technically a
convention. 1NT "conveys a meaning other"
due to its constraints on possible shapes, and
due to its constraints on acceptable values in
a possible doubleton.

Under the 2007 Definition of "artificial call", a
Gorenish 1NT opening bid is technically not
an artificial call, due to the 2007 caveat "not
being information taken for granted by
players generally".

What's the Goren problem?

In my opinion the problem is players falling
into the trap of assuming that their methods
are "normal" and "natural" and "standard",
so those players therefore give inadequate
explanations to opponents using another
set of methods.

Ed Reppert, May 2006:

Heh. even simple conventions can fall prey
to that. Particularly when the asker is trying to
ferret out subtle details. Example. P-1S-2C
(uncontested auction). Now opponent asks
what 2C means. Explanation: Drury. Now, in
the ACBL, and in most other jurisdictions as
well, AFAIK, naming a convention is not
enough, so... next question: tell me more,
please. Answer: Huh? It's Drury, wtp? Q:
Explain what the bid means, please, don't
just name it. A: Okay, he's showing a limit
raise. Q: What would 3S mean? A: limit
raise*. Q: so what's the difference between
2C and 3S? A: Director! This is harassment!

Most novices (and I include in that people
who've been playing in clubs for years, and
never had it driven home that you *must*
give a complete explanation of your
agreements) do *not* understand how to
explain things. And they get upset when
they get called on it.

* in many cases you get this answer
because they haven't thought about it. They
play it as a limit raise by an unpassed hand,
so... If they "have" thought about it, maybe
they think it should show a four card limit
raise, and 2C shows three. Or maybe they
think it should be weak. IAC, they probably
haven't discussed it with partner, so they
really don't *have* an agreement on the
meaning of 3S.

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