This chart applies to all
NABC+ events with no upper masterpoint limit played at an NABC in which
contestants play segments (no change of opponents) of 12 or more boards.
This chart (or any part) may be used at a sectionally or regionally
rated event or tournament at sponsor's option in any event with 12-board
or longer segments provided this has been included in tournament
Pre-Alerts are required for all conventional methods
not permitted on the ACBL General Convention Chart. Description of, and
suggested defenses to, such methods must be made in writing. A defense
to a method which requires the above pre-Alert may be referred to during
the auction by opponents of the convention user.
For NABC+ events in which this chart is permitted,
pairs playing SuperChart methods must furnish the above descriptions of
their methods to the Director-in-Charge of the event the day prior to
the session in which they choose to play them.
Unless specifically allowed methods are disallowed * *
All of the ACBL Mid-Chart plus any other non-destructive convention,
treatment or method except that:
Artificial weak bids at the two or three level (including those
with strong adjuncts) must possess:
a known suit, or
one of no more than two possible suits not to include the suit
Defenses over opponents' natural suit bids must promise:
for non-cuebids showing a single-suited hand, one of no more
than two possible suits
which could show a weak hand with four or more cards in the suit bid
must promise four or more cards in another known suit.
The prohibitions contained in item #9 under
RESPONSES AND REBIDS on the General Convention Chart are effective for
this Chart. (However, this prohibition does not extend to notrumps
that have two non-consecutive ranges neither of which exceeds 3 HCP.)
Conventions and/or agreements whose primary purpose is to destroy
the opponents' methods.
Psyching of artificial opening bids and/or conventional responses
Psychic controls. (Includes ANY partnership agreement which, if
used in conjunction with a psychic call, makes allowance for that
Forcing pass systems.
Opening one bids which by partnership agreement could show fewer
than 8 HCP. (Not applicable to a psych.)
Psyching a conventional agreement which may show fewer than 10 HCP
and which is not permitted by the General Convention Chart. This
includes psyching responses to or rebids of those methods.
Same as listed on the
General Convention Chart:
Dual-message carding strategies are not
approved except on each defender's first discard. Except for the first
discard, only right-side-up or upside-down card ordering strategies are
approved. Encrypted signals are not approved. In addition, a pair may be
prohibited from playing any method (such as suit preference systems at
trick one), when they are deemed to be playing it in a manner which is
not compatible with the maintenance of proper tempo (much like dual
message signals). This decision may be appealed to the tournament