ACBL CONVENTION MID-CHART

 

This chart applies to:

  1. All NABC+ events with no upper masterpoint restrictions played at an NABC.
  2. All unrestricted Flight A regionally-rated events at an NABC.
  3. Any bracket of a bracketed KO at an NABC which contains no team with a bracket designator (average masterpoints of the entire team or top two players) of less than 1000 points.

This chart (or any part) may apply to any sectionally or regionally rated event or tournament at sponsor's option provided that this has been included in tournament advertising. (The requirement for advertising does not extend to use in Flt. A or high brackets of KO's.)

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 becomes part of the convention user's card and may be referred to during the auction by opponents of the convention user.

ALLOWED * * : Unless specifically allowed, methods are disallowed * *

  1. All of the ACBL General Convention Chart.
  2. Relay (tell me more) systems that promise game-forcing values.
  3. Except for relay systems that show less than game-forcing values and conventional calls that are prohibited by #9 under RESPONSES AND REBIDS on the General Convention Chart, (However, this prohibition does not extend to notrumps that have two non-consecutive ranges neither of which exceeds 3 HCP) all other constructive rebids and responses are permitted. THIS APPLIES TO BOTH PAIRS.
  4. Any call that promises four or more cards in a known suit. (See item #6 in DISALLOWED below.)
  5. Opening two diamonds showing a weak two-bid in either major may include additional strong (15+ HCP) meaning(s).
  6. A two spade or two no trump opening bid showing either minor.
  7. Any strong (15+ HCP) opening bid.
  8. Notrump overcall as a two-suit takeout showing at least 54 distribution.
  9. Defense to natural notrump opening bids and overcalls.

DISALLOWED

  1. Conventions and/or agreements whose primary purpose is to destroy the opponents' methods.
  2. Psyching of artificial opening bids and/or conventional responses thereto.
  3. Psychic controls. (Includes ANY partnership agreement which, if used in conjunction with a psychic call, makes allowance for that psych.)
  4. Forcing pass systems.
  5. Relay (tell me more) systems except those that are game forcing.
  6. Opening one bids which by partnership agreement could show fewer than 8 HCP. (Not applicable to a psych.)
  7. 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 these methods.

CARDING

Same as listed on the General Convention Chart

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