ACBL Convention Charts

T16/REV. 12/99 - Form #520226

There are four convention charts for use in various events of ACBL sanctioned tournament play.

ACBL Limited Convention Chart ACBL General Convention Chart
May be used in games with an upper limit of 20 or fewer MPs. Club management shall determine the conventions permitted in club games with an upper limit of 20 or fewer masterpoints.The sponsoring organization of local and higher rated tournaments may determine the conventions permitted in games with an upper limit of 20 or fewer masterpoints The conventions listed below must be allowed in all ACBL sanctioned tournament play (other than in events with an upper restriction of 20 or fewer masterpoints and events for which the ACBL conditions of contest state otherwise) and at club-level events with multiple-site overall masterpoint awards. However, clubs have full authority to regulate conventions in games conducted solely at their clubs.
ACBL Convention Mid-Chart ACBL Convention Super-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 KOs.)

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.

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 advertising.

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.