Editing Chess (section)

===Tournaments and matches===
[[File:TataSteelChess2019-11.jpg|thumb|right|[[Tata Steel Chess Tournament]] 2019, Wijk aan Zee (the Netherlands)]]
Contemporary chess is an organized sport with structured international and national leagues, tournaments, and [[congress]]es. Thousands of chess tournaments, matches, and festivals are held around the world every year catering to players of all levels.

Tournaments with a small number of players may use the [[Round-robin tournament|round-robin]] format, in which every player plays one game against every other player. For a large number of players, the [[Swiss system tournament|Swiss system]] may be used, in which each player is paired against an opponent who has the same (or as similar as possible) score in each round. In either case, a player's score is usually calculated as 1 point for each game won and one-half point for each game drawn. Variations such as "football scoring" (3 points for a win, 1 point for a draw) may be used by tournament organizers, but ratings are always calculated on the basis of standard scoring. A player's score [[Chess scoring|may be reported]] as total score out of games played (e.g. 5½/8), points for versus points against (e.g. 5½–2½), or by number of wins, losses and draws (e.g. +4−1=3).

The term "match" refers not to an individual game, but to either a series of games between two players, or a team competition in which each player of one team plays one game against a player of the other team.