• Swiss Chess Tournament Software
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A Swiss-system tournament is a non-eliminating tournament format that features a set number of rounds of competition, but considerably fewer than that of a round-robin tournament. In a Swiss tournament, each competitor (team or individual) does not necessarily play all other entrants. Competitors meet one-on-one in each round and are paired using a set of rules designed to ensure that each competitor plays opponents with a similar running score, but not the same opponent more than once. The winner is the competitor with the highest aggregate points earned in all rounds. All competitors play in each round unless there is an odd number of players.

Control administrative processes for chess tournaments of any scale. Automatically create pairs of players and optimize the round robin, team-round robin, swiss-system, team swiss-system variations of tournament networks. Update current competition data. Download SwissManager 7.0.0.1072 from our software library for free. The most popular. Download Swiss Tournament for free. The Swiss Tournament software uses the U.S. Chess Federation's Swiss system to pair players during each round of a chess tournament.

Welcome to SwissSys Software, home since 1989 of the most popular, powerful, yet easy-to-use chess tournament pairing software in the world. Version 9 for Windows is available as a free download to try out.

A Swiss system is used for competitions in which the number of entrants is considered too large for a full round-robin to be feasible, and eliminating any competitors before the end of the tournament is undesirable.^[1] Round-robin pairings are suitable for a small number of competitors and rounds, as most or all players will play each other; the underlying assumption is that the player who has played all possible opponents and ends with the highest score must be the winner. Single-elimination (knockout) pairings rapidly reduce the number of competitors, but they may not necessarily result in the best possible competitor winning, as good competitors might have a bad day or eliminate and exhaust each other if they meet in early rounds. Swiss systems intend to provide a clear winner with a limited number of rounds and a potentially unlimited number of opponents. A Swiss system draw should result in a clear winner, without having to play all opponents as in round robin, and without a single bad result terminating participation.

The system was first employed at a chess tournament in Zurich in 1895, hence the name 'Swiss system'.^[1] Swiss systems are commonly used in chess,^[1]Go,^[2][3][4]bridge, Scrabble and many other games.

• 1Pairing procedure
• 4Variations of Swiss systems
• 5Application of the Swiss system

Pairing procedure[edit]

The first round is either drawn at random or seeded according to some prior order, such as rating (in chess) or recent performance. All participants then proceed to the next round in which winners are pitted against winners, losers are pitted against losers and so on. In subsequent rounds, each competitor faces an opponent with the same, or almost the same, cumulative score. No player is paired with the same opponent twice. In chess, the pairing rules try to ensure that each player plays an equal number of games with white and black, alternate colors in each round being the most preferable, and a particular effort is made to not assign a player the same color three times consecutively.^[5]

During all but the first round, competitors are paired based on approximately how well (or poorly) they have performed so far. In the first round, competitors are paired either randomly or according to some pattern that has been found to serve a given game or sport well. If it is desired for top-ranked participants to meet in the last rounds, the pattern must start them in different brackets, just the same as is done in seeding of pre-ranked players for a single elimination tournament. In subsequent rounds, competitors are sorted according to their cumulative scores and are assigned opponents with the same or similar score up to that point. Some adjustments may be made to assure that no two players ever oppose each other twice, or to even out advantages a player may have as a result of chance.

The detailed pairing rules are different in different variations of Swiss system. They may be quite complicated, so to make the task easier, quicker and more accurate, the tournament organizer often uses a computer program to do the pairing.

In chess, a specific pairing rule, called 'Dutch system' by FIDE, is often implied when the term 'Swiss' is used. The Monrad system for pairing is commonly used in chess in Denmark and Norway, as well as in other sports worldwide. These two systems are outlined below.

Dutch system[edit]

The players are divided into groups, based on their score. Within each group with the same score, players are ranked, based on rating or some other criteria. Subject to the other pairing rules, the top half is then paired with the bottom half. For instance, if there are eight players in a score group, number 1 is paired with number 5, number 2 is paired with number 6 and so on. Modifications are then made to prevent competitors from meeting each other twice, and to balance colors (in chess).^[5] Players are sorted by score groups, ranked and top half paired to bottom half. It is suggested^{[by whom?]} that for smaller fields score groups are not a suitable approach.

Monrad system[edit]

The players are first ranked based on their score, then on their starting number (which can be random or based on seeding). Then #1 meets #2, #3 meets #4 etc., with modifications made to ensure that other rules are adhered to. Players are sorted by score (not score groups) and original rank, then each player paired to the next opponent, typically excluding repeats. This is more suitable for smaller numbers of competitors.

The Monrad system used in chess in Denmark is quite simple, with players initially ranked at random, and pairings modified only to avoid players meeting each other twice.^[6] The Norwegian system has an optional seeding system for the first round pairings, and within a score group, the pairing algorithm endeavours to give players alternating colors.^[7]

This pairing system is widely used in Scrabble and it's known as the King Of The Hill format. It's considered to be distinct from the Swiss pairing system.

Final scores and tie-breaking[edit]

There is a fixed number of rounds. After the last round, players are ranked by their score. If players remain tied, a tie-break score is used, such as the sum of all opponents' scores (Buchholz chess rating).

Analysis, advantages, and disadvantages[edit]

Assuming no drawn games, determining a clear winner (and, incidentally, a clear loser) would require the same number of rounds as that of a knockout tournament, which is the binary logarithm of the number of players rounded up. Thus three rounds can handle eight players, four rounds can handle sixteen players and so on. If fewer than this minimum number of rounds are played, two or more players could finish the tournament with a perfect score, having won all their games but never having faced each other.

Compared to a knockout tournament, a Swiss system has the advantage of not eliminating anyone; a player who enters the tournament knows that he or she can play in all the rounds, regardless of results. The only exception is that one player is left over when there is an odd number of players. The player left over receives a bye: he or she does not play that round but is usually awarded the same number of points as for winning a game (e.g. one point for a chess tournament). The player is reintroduced in the next round and will not receive another bye.

Another advantage compared to knockout tournaments is that the final ranking gives some indication of the relative strengths of all contestants, not just of the tournament winner. For example, the losing finalist in a knockout tournament may not necessarily be the second-best contestant but any of the contestants defeated by the eventual tournament winner in earlier rounds.

In a Swiss-system tournament, sometimes a player has such a great lead that by the last round he is assured of winning the tournament even if he loses the last game. This has some disadvantages. First, a Swiss-system tournament does not always end with the exciting climax of a knockout final. Second, while the outcome of the final game has no bearing on first place, the first-place player can decide who wins second or third prize. In the 1995 All-Stars Tournament in Scrabble, tournament directors paired David Gibson, who had by then clinched first place, with the highest-ranked player who could not win a prize so that the second- and third-ranked players could compete between themselves for the final placements. The 'Gibson Rule' is optional at Scrabble tournaments, as players at smaller tournaments may still have an incentive to win their last game to improve their overall rating. Players may also be 'Gibsonized' if they have clinched a spot in the next round, and can be paired with the highest-ranked player who cannot possibly qualify for the next round.^[8]

A disadvantage compared to an all-play-all tournament is that, while the players finishing near the top are typically those with the best performances, and those finishing near the bottom are those with the worst performances, the players in the middle tend to be jumbled with little meaningful order. For example, at the 2010 European Chess Championship, players scoring 5½/11 had performance ratings ranging from to 2189 to 2559; such a difference suggests that the stronger-performing player would score more than 90% against the weaker-performing one. One player with a 2441 performance rating scored two and a half points better than one performing at 2518.^[9]

In Swiss-system tournaments, the later rounds have a much greater bearing on the final results than do the earlier rounds. In fact, it can even be an advantage to have a poor start to a Swiss-system tournament because the player is then more likely to be paired against weaker opposition. Chess players colloquially refer to this as a “Swiss Gambit”.

The system is used for selection to the English national pool team.^[10] Sixty-four players start the tournament and after six rounds, the top player will qualify as they will be unbeaten. The remaining seven places are decided after a series of round robins and playoffs.

Compared with a round-robin tournament, a Swiss tournament can handle many players without requiring an impractical number of rounds. An elimination tournament is better suited to a situation in which only a limited number of games may be played at once, e.g. in tennis. In a Swiss system, all players can be playing at the same time.

Variations of Swiss systems[edit]

Accelerated pairings[edit]

The method of accelerated pairings also known as accelerated Swiss^[11] is used in some large tournaments with more than the optimal number of players for the number of rounds. This method pairs top players more quickly than the standard method in the opening rounds^[11] and has the effect of reducing the number of players with perfect scores more rapidly (by approximately a factor of 2 after two rounds).^[12]

For the first two rounds, players who started in the top half have one point added to their score for pairing purposes only. Then the first two rounds are paired normally, taking this added score into account. In effect, in the first round the top quarter plays the second quarter and the third quarter plays the fourth quarter. Most of the players in the first and third quarters should win the first round. Assuming this is approximately the case, in effect for the second round the top eighth plays the second eighth, the second quarter plays the third quarter and the seventh eighth plays the bottom eighth. That is, in the second round, winners in the top half play each other, losers in the bottom half play each other, and losers in the top half play winners in the bottom half (for the most part). After two rounds, about ⅛ of the players will have a perfect score, instead of ¼. After the second round, the standard pairing method is used (without the added point for the players who started in the top half).

As a comparison between the standard Swiss system and the accelerated pairings, consider a tournament with eight players, ranked #1 through #8. Assume that the higher-ranked player always wins.

Standard Swiss system

After two rounds, the standings are:
1: 2-0
2: 2-0
3: 1-1
4: 1-1
5: 1-1
6: 1-1
7: 0-2
8: 0-2

Accelerated pairings

After two rounds, the standings are:
1: 2-0
2: 1-1
3: 1-1
4: 1-1
5: 1-1
6: 1-1
7: 1-1
8: 0-2

Accelerated pairings do not guarantee that fewer players will have a perfect score. In round 2, if #5 and #6 score upset wins against #3 and #4, and there is a decisive result between #1 and #2, there will be three players with a perfect 2-0 score.

Danish system[edit]

The Danish system works in principle like a Monrad system, only without the restriction that no players can meet for a second time, so it is always #1 vs. #2, #3 vs. #4 etc.

Bridge team tournaments, if not played as 'Round Robin', usually start with the Swiss system to make sure that the same teams would not play against each other frequently, but in the last one or two rounds there is a switch to the Danish system, especially to allow the first two ranked teams to battle against each other for the victory, even if they have met before during the tournament.

Grand Prix system[edit]

In a few tournaments which run over a long period of time, such as a tournament with one round every week for three months, the Grand Prix system can be used. A player's final score is based on his best results (e.g. best ten results out of the twelve rounds). Players are not required to play in every round, they may enter or drop out of the tournament at any time. Indeed, they may decide to play only one game if they wish to, although if a player wants to get a prize they need to play more rounds to accumulate points. The tournament therefore includes players who want to go for a prize and play several rounds as well as players who only want to play an off game.^[13]

McMahon system[edit]

A variant known as the McMahon system tournament is the established way in which EuropeanGo tournaments are run. This differs mainly in that players have a skill ranking prior to the start of the tournament which determines their initial pairing in contrast to the basic Swiss-system approach where all players start at the same skill ranking. The McMahon system reduces the probability of a very strong team meeting a very weak team in the initial rounds. It is named for Lee E. McMahon (1931–1989) of Bell Labs.

Amalfi system[edit]

A tournament system in Italy. It is similar to the Swiss System, but doesn't split players based on their score. Before pairing any round, players are listed for decreasing score / decreasing rating, and the opponent of the first player in the list is the player following him by a number of positions equal to the number of remaining rounds, and so on for the other players. As consequence of this, the difference in rating between opponents at the first round is not so big (as for the accelerated systems), and ideally the 'big match' between the first and the second one should occur at the last round, no matter how many players and rounds are in the tournament.

Application of the Swiss system[edit]

Badminton[edit]

International Student Badminton Tournaments depend on the Swiss ladder system to ensure its players get as many challenging matches as possible over the course of the badminton tournament. The tournaments are meant to promote both the sport and the social aspect of the game, hence its results are not connected to external rankings. Beforehand, players can enroll in three or four categories designed to separate national, regional and recreational players. Players of different clubs are coupled to form doubles and mixed doubles. The starting positions on each ladder (singles, doubles and mixed doubles) are random. Unlike in official matches a 1-1 draw is possible and games are usually not extended after 21 is reached in order to maximise the number of played matches.

Hardcourt bike polo[edit]

The Swiss-system has been used in Hardcourt Bike Polo. Currently Podium is the most frequently used for seeding a two-day tournament.^[14] The site allows you to track games and can be viewed from mobile devices at the tournaments or across the world.

Bridge[edit]

The Swiss system is used in some bridge tournament events, usually team matches where a team consists of four to six players (with exactly four playing each round, as two pairs). In each round, one team plays against another team for several hands, with the North/South pair(s) of one team playing against the East/West pair(s) of the other team. The same hands are played at each table, and the results at the two (or more) tables are compared using the International Match Point (IMP) scoring system. The difference between the total IMPs scored by the two teams in that round is converted by a formula to Victory Points (VPs), with typically 20 VPs shared between the two teams, depending on the IMPs difference. In the first round, teams are usually paired randomly however pairings can be based on other criteria. In subsequent rounds, the teams are ranked in order of the number of VPs they have accumulated in previous rounds, and the top team plays the second team, the third team plays the fourth team, etc., subject to the proviso that teams do not play each other twice. Software is employed to do pairings, and in the early rounds it will match teams with approximately the same score but it will not result in a precise 1 vs 2, 3 vs 4, etc. This is done so that matches can begin before all teams have finished the previous round. In later rounds the pairings are slower but more exact. In the last one or two rounds there may be a switch to the Danish system to make sure that each team plays the final match according to its actual ranking, even if this results in some teams playing against an opponent a second time. (At least in the USA, this is extremely rare, usually employed only in very small club games with a large number of rounds relative to the number of teams.)

Chess[edit]

In chess, each player is pitted (paired) against another player with an equivalent performance score. In 'Round 1' of a chess tournament paired using the Swiss System, players usually are seeded according to their known playing strength—e.g. their 'chess rating' assigned to them by their local club, their national federation, or the world chess federation (FIDE). In some events, especially when none are few of the players have an official chess rating, the players are paired randomly. Once play begins, players who win receive a point, those who draw receive one-half of a point, and those who lose receive no points. Win, lose or draw, all players proceed to the next round where winners are pitted against opponents with equal performance scores (e.g. Round 1's winners play each other, Round 1's draws play each other, etc.). In later rounds (typical tournaments have any where from 3-9 rounds), players face opponents with the same (or almost the same) score. No player is paired up against the same opponent twice (unless the tournament is specifically designed for all players to play one another twice (once as White, once as Black). The rules for Swiss System chess events also try to ensure that each player plays an equal number of games with white and black. Alternating colors in each round is the most preferable and the same color is never repeated three times in a row. Players with the same score are ideally ranked according to rating. Then the top half is paired with the bottom half. For instance, if there are eight players in a score group, number 1 is paired to play number 5, number 2 is paired to play number 6 and so on. When the tournament, or a section of the tournament, has an odd-number of players, one player usually is assigned a 'Bye'—e.g. a round where the player is not paired. Modifications are then made to balance colors and prevent players from meeting each other twice.^[1] The first national event in the United States to use the Swiss system was in Corpus Christi, Texas in 1945; and the first Chess Olympiad using it was held in Haifa in 1976.^[15]

In chess, the terms Swiss and Monrad are both used, and denote systems with different pairing algorithms. The Monrad pairing system is commonly used in Denmark and Norway, while most of the rest of the world uses one of the Swiss systems defined by FIDE. In most other sports, only one format is used, and is known either as Monrad or Swiss.

Croquet[edit]

Croquet tournaments are frequently run using a Swiss system, often flexibly so that the order of players is not strictly maintained, avoiding players waiting around for long games to finish. Variants include the Burridge Swiss, used as a qualifying stage for a subsequent elimination, in which there is a predetermined threshold of games. Once a player reaches that threshold, the player will no longer be included in the Swiss and will have qualified. Once a player can no longer reach the threshold, they are eliminated from the Swiss. The number of rounds is about double that of the threshold.^[16]

Curling[edit]

Curling uses a variation called the Schenkel system.

Like a Swiss tournament, the Schenkel ensures that after the first round teams will play against teams with similar levels of success so far. That means that after the first round the pairs for the second round would be first-ranked team against the second, third against fourth, and so on.

In a true Swiss-style tournament all teams play in one group. However, in a curling arena there are a limited number of curling sheets available at any one time. Therefore, the teams are usually divided into groups, and the groups are rearranged after a round or two.

The criteria used for ranking are, in order:

• points won (2 points for victory in a game, 1 point for a tie, none for a loss)
• total ends won so far
• total stone-points scored
• stone ratio (stone-points scored minus stone-points conceded)

Debate tabs[edit]

British Parliamentary Style debate competitions have four rather than two teams in each debate. The preliminary round for many such competitions, including the World Universities Debating Championship, ranks teams by a modified form of Swiss tournament, usually called a tab. 'Tab' also denotes to the software used for scheduling of rounds and tabulation of results. Teams are ranked from first to fourth in each debate and awarded from three down to zero points. Teams with similar points totals are grouped off for each successive round. Just as chess Swiss tournaments are arranged to ensure players have a balance of playing with black pieces and white pieces, so too debate tournaments attempt to provide teams with a balance of places in the speaking order (i.e. Opening Government, Opening Opposition, Closing Government, and Closing Opposition). With four competitors rather than two, significantly greater compromise is required to balance the ideal requirements of, on the one hand, a team not meeting the same opponent twice and, on the other hand, a team having a balanced mix of places in the running order.

Esports[edit]

Mind Sports South Africa, the national body for eSports in South Africa, uses a Swiss system for all its tournaments.^{[citation needed]} For its Swiss implementations, players receive three points for a win and only one for a draw and no player can play against another player more than once. There is the further provision that no player may play against another player from the same club in the first round as long as no one club has 40% of the entrants.

On June 1, 2016 ESL announced ^[17] that it would be using the Swiss system for its ESL One Cologne 2016 offline qualifier tournament. ELEAGUE also adopted this system for the ELEAGUE Major 2017 qualifier and the ELEAGUE Major itself.^[18] The format has been used for every following Counter-Strike: Global Offensive major tournament since its initial usage. The format was also used for the Dota 2Kiev Major tournament in 2017.^[19]Overwatch Open Division also makes use of the Swiss system,^[20] as well as the Hearthstone Global Games tournament.^[21]

Swiss Chess Tournament Software

Go[edit]

Free Swiss Tournament Software Games

Relatively few Go tournaments use the Swiss system. Most amateur Go tournaments, at least in Europe and America, now use the McMahon system instead. Swiss-system tournaments must start with very unequal matches in the early rounds—'slaughter pairing' is the name of one initial pattern used—if the Swiss pairing rules applied subsequently are to allow the top players to meet in the latest rounds. The McMahon system is designed to give all players games against similarly skilled players all along, and to produce final standings that more accurately reflect the true current skill levels of players.^[2][22]

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Magic: the Gathering[edit]

The DCI, the tournament sanctioning body for the card game Magic: The Gathering, uses a Swiss system for most tournaments. Unlike with other Swiss implementations, players receive three points for a win and only one for a draw. After sufficient rounds to mathematically ensure that players with a record of one loss or better will be ranked in the top eight players, typically the top eight players advance to a single-elimination stage, with several statistics used as tie-breakers. The minimum number of players to top 8 are 16 or more, and top 4 with 8 players or more, and top 2 (if necessary) if there are 4 or more players.^[23]

Grand Prix main events are split into two days. On day 1, eight Swiss rounds are played, where anyone with at least 18 match points (a record of 6-2 or better) will advance to day two. On day two, seven more Swiss rounds are played, followed by a cut to the top eight single elimination stage.

Pokémon[edit]

Tournaments in the Pokémon Trading Card Game and Video Game Championships use a combination of the Swiss system and single-elimination. The tournament begins as a Swiss-system tournament. At the end of the Swiss rounds, the top players advance to a single-elimination tournament (also known as the Top Cut). In previous years, the Top Cut would include between 12.5 and 25 percent of the original number of participants (e.g. if there were 64 to 127 players, there would be a Top 16).

As of the 2013-2014 season, Swiss rounds in City, State, Regional, National, and World Championships are played best-of-three, with a 50-minute plus three-turn time limit. Ties were introduced into the Swiss round portion of the tournaments in the 2013-2014 season for the first time since 2002-2003. A win is worth 3 match points, a tie is worth 1 match point, and a loss is worth 0 match points.

Top Cut rounds are played best-of-three, with a 75-minute plus three-turn time limit.

Also, the Regional and National Championships were contested as two-day Swiss tournaments, where only the top 32 players from Day One would continue in another Swiss tournament in Day Two, prior to a Top 8.

League Challenge and Pre-Release tournaments are played solely as a Swiss system. Local tournaments may or may not have a Top Cut.

The tiebreakers are in the order of Opponents' Win Percentage, Opponents' Opponents' Win Percentage, Head to Head, and Standing of Last Opponent. The fourth tiebreaker will always result in the tie being broken.

Scrabble[edit]

In some Scrabble tournaments, a system known variously as 'modified Swiss', 'Portland Swiss', 'Fontes Swiss' or 'speed pairing' is used, whereby first players are placed in groups of four, and play three rounds of round-robin play, and subsequently are paired as in Swiss pairing, but using the standings as of the second to last round, rather than the last round. This has the advantage of allowing the tournament directors to already know who plays whom by the time given players are finished with a round, rather than making the players wait until all players have finished playing a given round before being able to start the time-consuming pairing process.

Commonly used in Australia, and now in many other countries, is a system known as 'Australian Draw'. Whereby each round is paired using a normal #1 plays #2, #3 plays #4, etc. except that repeat pairings within a selected range of previous games is forbidden. Often, for shorter tournaments the selected range will be since the very first round of the tournament, thus never having a repeat pairing for the entire tournament. For longer tournaments it is also common to have the first N rounds use the Australian Draw system, and followed by one or more 'King Of the Hill' rounds. 'King Of the Hill' is a strict #1 plays #2, #3 plays #4, etc. with no regard to previous pairings, thus unlimited repeat pairings are allowed.

Although labelled as 'Austrialian Version of Swiss Pairing' it is more akin to the King Of The Hill pairing system, than to the Swiss - Dutch system. As in chess, when the term Swiss Pairing is used, it's usually a reference to the Swiss Dutch System.

Ultimate Frisbee[edit]

Swiss Round Tournament

Windmill Windup, a three-day yearly Ultimate Frisbee tournament held in Amsterdam, was the first event in ultimate to introduce the Swiss draw system into the sport in 2005. In later years, many other tournaments started using this format, like Belgium's G-spot, Wisconsin Swiss and many others.For each round, teams earn victory points based on the score difference of their win (or loss). In this way, also a team clearly losing a game is encouraged to fight for every point in order to get more victory points. After each round, teams are ranked according to their victory points. Ties are broken by considering the sum of the current victory points of their opponents. In the next round, neighboring teams in the ranking play each other. In case they have played each other in a previous round, adjustments to the rankings are made. After five rounds of Swiss draw, the top 8 teams play three playoff rounds to determine the final placement of the teams. All other teams continue with the Swiss draw in the remaining rounds.

Wargames[edit]

The International Wargames Federation, the international body for wargames, uses a Swiss system for all its tournaments. For its Swiss implementations, players receive three points for a win and only one for a draw and no player can play against another player more than once. There is the further proviso that no player may play against another player from the same country in the first round as long as no one country has 40% of the entrants. For national championships such rule is amended to read that no player can play against a player from the same club in the first round as long as no one club has 40% of the entrants.

Yu-Gi-Oh! Trading Card Game[edit]

Konami Digital Entertainment of the United States uses proprietary software for their sanctioned and official tournaments. Konami Tournament Software (KTS) is what is supplied to the Tournament Organizers to run each tournament. The software utilized the Swiss system similarly to Magic: The Gathering—3 points for a win, 1 for a draw, 0 for a loss.

Konami's official tournament policy dictates how many rounds are played based on the number of participants. After the set number of rounds of Swiss are complete, there is generally a cut to advance in the tournament. This is then played as single-elimination until a winner is declared.

See also[edit]

Other tournament systems

References[edit]

1. ^ ^abcd'What is the Swiss System?'. Chess.about.com. 2013-11-13. Retrieved 2013-12-09.
2. ^ ^ab'Swiss Pairing'. Sensei's Library.
3. ^'Standard AGA Tournament Protocols'. American Go Association.
4. ^'EGF Tournament System Rules'. European Go Federation.
5. ^ ^ab'Swiss System vs Round Robin'. Scichess.org. Retrieved 2013-12-09.
6. ^Regulations for Monrad system as used in Denmark (See section 4.10.1) (in Danish)
7. ^Regulations for Monrad system as used in NorwayArchived 2007-07-06 at the Wayback Machine(in Norwegian)
8. ^NASPA Director Manual(PDF). Dallas, TX: North American Word Game Players Association. 2013. p. 54.
9. ^chess results
10. ^'ENGLISH POOL ASSOCIATION'. www.epa.org.uk. Retrieved 2016-04-06.
11. ^ ^abBarden, Leonard (1980), Play better CHESS with Leonard Barden, Octopus Books Limited, p. 150, ISBN0-7064-0967-1
12. ^Just, Tim; Burg, Daniel (2003). U.S. Chess Federation's Official Rules of Chess. McKay. pp. 130–31. ISBN0-8129-3559-4.
13. ^https://www.foxsports.com/nascar/story/nascars-new-points-system-rewards-winning-012611(in Norwegian)
14. ^'For people who take swiss rounds too seriously..'League of Bike Polo. Archived from the original on 2016-03-26. Retrieved 30 April 2015.
15. ^'OlimpBase :: 22nd Chess Olympiad, Haifa 1976, information'. www.olimpbase.org. Retrieved 2016-04-06.
16. ^'Oxford Croquet, Tournament Management'. www.oxfordcroquet.com. Retrieved 2019-07-31.
17. ^ESL. 'ESL One Cologne 2016'. ESL One. Retrieved 2016-06-01.
18. ^'christina alejandre on Twitter'.
19. ^'Swiss Format Summary'. thekievmajor.com. Retrieved 15 April 2017.
20. ^'faceit Overwatch Open Division Rules'.
21. ^'2018 Hearthstone Global Games Official Competition Rules'(PDF). Battle.net. Retrieved 21 August 2018.
22. ^'Sonneborn Berger'. senseis.
23. ^'DCI Tournament Organizer Handbook'(PDF). Wizards of the Coast. 2007. Retrieved 2007-04-26.

External links[edit]

Free Swiss Tournament Software 2017