Difficulty spread

A difficulty spread is a set of difficulties in a beatmap within some range of star rating values.

Ranked beatmaps have several requirements regarding difficulty spreads as per the ranking criteria:

  • All required difficulty levels within the spread's range must be present.
  • Difficulties lower than the lowest difficulty level required, as determined by the spread rules, are optional.
  • No two adjacent beatmap difficulties may have a significant gap in difficulty.