ACBL CONDITIONS OF CONTEST

The General Conditions of Contest for pair events will apply to this event, subject to the following special conditions of contest.

These Conditions of Contest may not be changed at any level of play during the course of this event.

Lack of knowledge does not constitute cause for exemption.

1. This event is open to pairs each member of which is a paid up ACBL member.

2. The NABC IMP Pairs consists of four sessions, two qualifying and two final, scored by IMP's as follows:
a. compare each pairs result on a board with every other pair's result to obtain a number of IMPS for that comparison to a maximum of 17 plus or minus for each comparison.
b. calculate the average IMPs for that pair on that board.
c. The unrounded average IMPs is the pair's score on that board (The score will be published rounded to the nearest hundredth).
d. A pair’s final score for a session is the sum of the scores on each board rounded to the nearest hundredth of an IMP.

3. Approximately 50% (but in no case less than 40%) of the final North-South and East-West fields will qualify for the two final sessions. Ties for the last qualifying position will be broken as per ACBL regulation.

4. Carryover

a. There will be a carryover from the qualifying sessions to the final. The carryover can be no greater than the percentage of pairs who qualify times 52.

b. Individuals carryovers will be determined by reducing the difference between scores by the percentage of pairs who qualify. If this results in a maximum carryover greater than that permitted in 4a, it will be reduced to the maximum allowable and all other scores prorated.

5. For purposes of qualifying or for determining final overall ranking any fraction of an IMP difference in the posted score will be sufficient separation.

6. Regarding any of the above or any of the general conditions of ACBL pair events the decision of the Director in Charge shall be final.