How snooker handicaps work
A handicap is the points a player starts each frame on against a scratch player. In a match only the difference counts: the weaker player starts on the difference and the stronger on 0. Handicaps can be set by the organiser, or follow results so winners give a little back.
An example
Ray is on 21 and Dot is on 7. The difference is 14, so Dot starts every frame on 0 and Ray on 14.
Following results
With adjustments on, the winner of a match gives up points and the loser gains them, more for a whitewash than a decider. New players move faster for their first few matches. Every change is logged.