The Norwegian Chess Championship (NM i sjakk) is an annual tournament held in Norway during the month of July, in order to determine the national chess champion. The tournament is held at different venues each year as part of the Landsturnering (National tournament). Clubs may bid for this tournament, which is awarded by the Norwegian Chess Federation (Norges Sjakkforbund).
This table summarizes all past championship events. The tournament was not held in 1928 and 1939 due to the Nordic Championships being held in Oslo those years, nor was there any event between 1940 and 1944, when Norway was occupied by Nazi Germany.
The number of participants is the number of players in the entire Landsturnering, not just the championship section. The champions are listed along with the club they represented when they won the championship. Titles decided by play-off matches due to equal scores in the main tournament are noted.
The rules for participation are governed by the Norwegian Chess Federation (NSF).
The championship ("Elite") section is restricted to the top-rated players. In order to play for the most prestigious title of national chess champion, a player must meet at least one of the following criteria:
In general, an even number of participants is sought in the championship section to prevent byes from occurring.
However, the Landsturnering has several sections for lower-rated players, as well as sections for different age groups. In general, players must be members of the Norwegian Chess Federation, or a club affiliated with the federation, although exceptions may be made if the person is a member of another national chess federation. To be eligible for a championship title, a player must either be a Norwegian citizen or have been a resident of Norway for the past year.
The current regulations provide for the following age categories:
The Senior, Junior and Cadet categories are split into an "A" and "B" group by rating, but are combined if either of the groups has fewer than 10 participants. A separate section for Junior B has not been arranged in the last few tournaments, and in 2008 the number of entries for that section was zero.
The rating sections are open for players of all age groups, and are divided into the classes
A player cannot be required to play in a higher class than what the last rating list indicates; however, a player may elect to play up if a sufficiently high rating was obtained on any of the four official rating lists during the year. In addition, players may elect to play in a higher section if they scored at least 60% in that same class the previous year, if they were in the top 7% of the class below the previous year, or if they won the Norwegian Grand Prix tournament series for the rating class below in the previous year. In addition, winners of the individual circuit championships and the champion of Northern Norway are automatically qualified for play in the Master class, regardless of rating. The top two finishers of the Master class qualify for next year's championship section.