Scoring logic
In x01 formats, players start from a fixed score and subtract points each visit. A leg ends only when the finish condition is met, most often double out, and the bust rule protects that logic by canceling invalid turns.
Darts Rules and Formats
Learn the essential darts rules, from 501 and 301 to doubles, match formats, and board setup.
🧠 How these rules work together
Most darts formats use the same core scoring logic, then add their own finish or match structure rules.
Match structure
A leg is one full game, while a set groups multiple legs. Best-of formats define how many legs or sets are needed to win, and accurate board height and oche distance make practice transferable to match conditions.
❓ Rules FAQ
What's the difference between 501 and 301?
Both are x01 formats where you subtract your score each visit. 301 is shorter and often used for quicker games, while 501 is the standard competitive format.
Do you always have to finish on a double?
In standard 501 matchplay, yes: you typically need a double to reach exactly zero. Some variations use single-out or master-out, so always check the agreed format.
What is the bust rule?
If you go below zero, or if you leave 1 remaining in double-out formats, your visit does not count. Your score returns to what it was at the start of the turn.
How do legs and sets work?
A leg is a single game of x01. A set is a group of legs. Matches can be played as best-of legs or best-of sets depending on the competition.