Changes
You are viewing a condensed mobile version of this NASPA webpage.
Switch to full version.
No change in size,
11:19, 19 January 2017
The NASC will be paired using tsh along the lines of 2014 and prior events, including Gibsonization on spread. After an initial phase of fixed pairings based on pre-event ratings, the top contenders are paired with each other, and everyone else is paired Swiss. These two groups, contenders and noncontenders, are paired with minimal repeats. For example, if there is no way to pair the contenders without at least one repeat, then they will be paired with one repeat.
The maximum number of contenders is typically 12 in Rounds 14-28, 8 in Round 29, 4 in Round 30 and 2 in Round 31. The contenders are further divided into a subgroup of leaders and non-leaders, if this can be done without increasing the number of required repeats while maintaining at least four players among the leaders. Leaders are paired by repeatedly having the top unpaired player play the lowest-ranked player that can catch up to them. Non-leaders are paired Swiss.
For further information about this pairing system, please refer to the section on Chew pairings in the tsh documentation.