How a jumping round works

1. A horse and rider jump a numbered course of obstacles in order, inside a set time allowed.
2. Mistakes cost penalties: four for knocking a fence down, four for a first refusal, and one for each second over the time.
3. A second refusal, a fall of horse or rider, or jumping the wrong course means elimination.
4. The fewest penalties wins. Riders who are level, usually all those who went clear, ride a jump-off: a shorter course against the clock, where the fastest of the fewest penalties wins.

How long

The time allowed is worked out from each course's length and a set speed. Twice that is the time limit, and going past it means elimination.