It may be simple ("regular") swiss where pairings are done based on FIDE rules.
In "non-regular" swiss, pairings may be done on different rules, i.e. nobody cares about opponent strength (rating) but their points.
It may be simple ("regular") swiss where pairings are done based on FIDE rules.
In "non-regular" swiss, pairings may be done on different rules, i.e. nobody cares about opponent strength (rating) but their points.