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→Swiss Pairings
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==Motivation==
Performance Pairings are used by WGVC at some large events in an attempt to generate effective 'computer-assisted' pairings by giving the director access to a large number of parameters which can be adjusted according to the circumstances of each round. This document describes an overall pairing strategy which would use Performance Pairings at the end of the event. Gibsonization doesn't effect this strategy except that it eliminates consideration of "1st Place Contenders."
=== Swiss Pairings ===
=== Performance Pairings ===
==== 1st Place Contenders ====
1st place contenders are defined as those players who are no more than N/2 games behind the division leader, where N is the number of rounds left to play at the time pairings are being determined. For example, after round 18 or of a 24-game event with the division leader having a record of 12-6, players with (12 - (24 -18) / 2 ) = 9 or more wins are considered 1st place contenders.
This reckoning may be adjusted if the bottom such players have large negative spreads.
==== Money Contenders ====
Among players who are not 1st place contenders, those in contention for place prizes are defined as those who are no more than N/2 games behind the player in Xth position, where X is the number of place prizes being awarded. For example, if in round 18 of a 24-game event with 5 place prizes being awarded the player in 5th place has a record of 10-8, players with (10 - (24 - 18) / 2 ) = 7 or more wins who are not being treated as 1st place contenders are considered "Money Contenders".
Again, the group size may be reduced as for 1st place contenders.
====Non-Contenders====
Non-contenders are the players remaining after 1st place and Money Contenders are accounted for. Pairings among non-contenders will always be chosen so as to minimize the total number of repeats regardless of record. Class prizes are not taken into consideration.
In cases where strict application of the "Money Contenders" formula would include a small or empty set of non-contenders, some players from the bottom ranks of the money contenders may be selected as non-contenders.
====Contender Pairings====
====Final Round====
Final round pairings will probably be King Of the Hill for contenders except in unusual circumstances. Non-contenders will be paired so as to minimize repeats.
====Notes====
See also [[Assigned Firsts And Seconds]].
