#18203: "Swiss tournament pairing improvement: ranking based pairing"
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This improvement request is for games like hive and chess where one game is played by 2 players.
Besides the fact that in each round of a swiss tournament those players are paired to play against each other who have the same (or almost the same) number of points, the BGA swiss tournament pairing system works quite randomly. Besides that there should be a number of factors that should affect the pairing. One of these factors is the current ranking.
Please, consider improving the pairing system according to the standard Swiss-system: en.wikipedia.org/wiki/Swiss-system_tournament
Also, consider standarizing the BGA pairing system based on the rules of the International Chess Federation (FIDE): handbook.fide.com/chapter/C0401 and handbook.fide.com/chapter/C0402
(or at least you can read certain part of their documentation and get some inspiration).
Let me cite the relevant part of the above linked wiki page:
"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"".
"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."
For example:
Before the first round the ranking is based on the ELO of the players:
1. aljechin - 0, 870
2. Jewdoka - 0, 848
3. Pseudomonas - 0, 822
--------------------------------------- (separates the group where each player has the same number of points)
4. Iongler - 0, 792
5. aenorman - 0, 748
6. rizeagain - 0, 717
Therefore, the pairing for the first round should be the following:
(results are only for this example)
1. aljechin - Iongler: 0 - 1
2. Jewdoka - aenorman: 1 - 0
3. Pseudomonas - rizeagain 0 - 1
Therefore, the ranking changes to the following after the first round to this:
(for the sake of simplicity the secondary evaluation is based on the ELO of the given player - I know that it is differently in the BGA tournaments).
1. Jewdoka - 1, 848
--------------------------------------- (separates the group where each player has the same number of points = 1)
2. Iongler - 1, 792
3. rizeagain - 1, 717
=================== (separates the two groups)
4. aljechin - 0, 870
5. aenorman - 0, 748
--------------------------------------- (separates the group where each player has the same number of points = 0)
6. Pseudomonas - 0, 822
The pairing for the second round can be a quite complex task. I think it can be configured differently (different algorithm can be used). In case of chess and hive it should also consider the color of the players (I filed a separate request for that: boardgamearena.com/bug?id=18199). However, I won't deal with the colors in this example (I can prepare for you a separate one if you need it).
Based on the above separation of groups the 2. round could look like this:
1. Jewdoka - Iongler: this is obvious why they play together
2. rizeagain - aljechin: aljechin needed to be paired with rizeagain from the first group because the first group had an odd number of players. why aljechin and not the other two guys? it is because aljechin is was ranked higher at the given time
3. aenorman - Pseudomonas: this is obvious too• Per favore spiega cosa avresti voluto fare, cosa hai fatto e cosa è successo
• Qual è il tuo browser?
Google Chrome v81
• Per favore copia/incolla il testo visualizzato in inglese invece che nella tua lingua. Se hai una schermata di questo errore (cosa buona e giusta), puoi usare Imgur.com per caricarla e fare copia/incolla del link qui.
This improvement request is for games like hive and chess where one game is played by 2 players.
Besides the fact that in each round of a swiss tournament those players are paired to play against each other who have the same (or almost the same) number of points, the BGA swiss tournament pairing system works quite randomly. Besides that there should be a number of factors that should affect the pairing. One of these factors is the current ranking.
Please, consider improving the pairing system according to the standard Swiss-system: en.wikipedia.org/wiki/Swiss-system_tournament
Also, consider standarizing the BGA pairing system based on the rules of the International Chess Federation (FIDE): handbook.fide.com/chapter/C0401 and handbook.fide.com/chapter/C0402
(or at least you can read certain part of their documentation and get some inspiration).
Let me cite the relevant part of the above linked wiki page:
"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"".
"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."
For example:
Before the first round the ranking is based on the ELO of the players:
1. aljechin - 0, 870
2. Jewdoka - 0, 848
3. Pseudomonas - 0, 822
--------------------------------------- (separates the group where each player has the same number of points)
4. Iongler - 0, 792
5. aenorman - 0, 748
6. rizeagain - 0, 717
Therefore, the pairing for the first round should be the following:
(results are only for this example)
1. aljechin - Iongler: 0 - 1
2. Jewdoka - aenorman: 1 - 0
3. Pseudomonas - rizeagain 0 - 1
Therefore, the ranking changes to the following after the first round to this:
(for the sake of simplicity the secondary evaluation is based on the ELO of the given player - I know that it is differently in the BGA tournaments).
1. Jewdoka - 1, 848
--------------------------------------- (separates the group where each player has the same number of points = 1)
2. Iongler - 1, 792
3. rizeagain - 1, 717
=================== (separates the two groups)
4. aljechin - 0, 870
5. aenorman - 0, 748
--------------------------------------- (separates the group where each player has the same number of points = 0)
6. Pseudomonas - 0, 822
The pairing for the second round can be a quite complex task. I think it can be configured differently (different algorithm can be used). In case of chess and hive it should also consider the color of the players (I filed a separate request for that: boardgamearena.com/bug?id=18199). However, I won't deal with the colors in this example (I can prepare for you a separate one if you need it).
Based on the above separation of groups the 2. round could look like this:
1. Jewdoka - Iongler: this is obvious why they play together
2. rizeagain - aljechin: aljechin needed to be paired with rizeagain from the first group because the first group had an odd number of players. why aljechin and not the other two guys? it is because aljechin is was ranked higher at the given time
3. aenorman - Pseudomonas: this is obvious too• Questo testo è disponibile nel sistema di traduzione? Se sì, è stato tradotto nell'arco di più di 24 ore?
• Qual è il tuo browser?
Google Chrome v81
• Spiega il tuo suggerimento in modo preciso e conciso in modo che sia il più semplice possibile per capire cosa intendi.
This improvement request is for games like hive and chess where one game is played by 2 players.
Besides the fact that in each round of a swiss tournament those players are paired to play against each other who have the same (or almost the same) number of points, the BGA swiss tournament pairing system works quite randomly. Besides that there should be a number of factors that should affect the pairing. One of these factors is the current ranking.
Please, consider improving the pairing system according to the standard Swiss-system: en.wikipedia.org/wiki/Swiss-system_tournament
Also, consider standarizing the BGA pairing system based on the rules of the International Chess Federation (FIDE): handbook.fide.com/chapter/C0401 and handbook.fide.com/chapter/C0402
(or at least you can read certain part of their documentation and get some inspiration).
Let me cite the relevant part of the above linked wiki page:
"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"".
"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."
For example:
Before the first round the ranking is based on the ELO of the players:
1. aljechin - 0, 870
2. Jewdoka - 0, 848
3. Pseudomonas - 0, 822
--------------------------------------- (separates the group where each player has the same number of points)
4. Iongler - 0, 792
5. aenorman - 0, 748
6. rizeagain - 0, 717
Therefore, the pairing for the first round should be the following:
(results are only for this example)
1. aljechin - Iongler: 0 - 1
2. Jewdoka - aenorman: 1 - 0
3. Pseudomonas - rizeagain 0 - 1
Therefore, the ranking changes to the following after the first round to this:
(for the sake of simplicity the secondary evaluation is based on the ELO of the given player - I know that it is differently in the BGA tournaments).
1. Jewdoka - 1, 848
--------------------------------------- (separates the group where each player has the same number of points = 1)
2. Iongler - 1, 792
3. rizeagain - 1, 717
=================== (separates the two groups)
4. aljechin - 0, 870
5. aenorman - 0, 748
--------------------------------------- (separates the group where each player has the same number of points = 0)
6. Pseudomonas - 0, 822
The pairing for the second round can be a quite complex task. I think it can be configured differently (different algorithm can be used). In case of chess and hive it should also consider the color of the players (I filed a separate request for that: boardgamearena.com/bug?id=18199). However, I won't deal with the colors in this example (I can prepare for you a separate one if you need it).
Based on the above separation of groups the 2. round could look like this:
1. Jewdoka - Iongler: this is obvious why they play together
2. rizeagain - aljechin: aljechin needed to be paired with rizeagain from the first group because the first group had an odd number of players. why aljechin and not the other two guys? it is because aljechin is was ranked higher at the given time
3. aenorman - Pseudomonas: this is obvious too• Qual è il tuo browser?
Google Chrome v81
• Cosa era mostrato sullo schermo quando sei rimasto bloccato (schermo bianco? interfaccia di gioco parziale? messaggio di errore?)
This improvement request is for games like hive and chess where one game is played by 2 players.
Besides the fact that in each round of a swiss tournament those players are paired to play against each other who have the same (or almost the same) number of points, the BGA swiss tournament pairing system works quite randomly. Besides that there should be a number of factors that should affect the pairing. One of these factors is the current ranking.
Please, consider improving the pairing system according to the standard Swiss-system: en.wikipedia.org/wiki/Swiss-system_tournament
Also, consider standarizing the BGA pairing system based on the rules of the International Chess Federation (FIDE): handbook.fide.com/chapter/C0401 and handbook.fide.com/chapter/C0402
(or at least you can read certain part of their documentation and get some inspiration).
Let me cite the relevant part of the above linked wiki page:
"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"".
"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."
For example:
Before the first round the ranking is based on the ELO of the players:
1. aljechin - 0, 870
2. Jewdoka - 0, 848
3. Pseudomonas - 0, 822
--------------------------------------- (separates the group where each player has the same number of points)
4. Iongler - 0, 792
5. aenorman - 0, 748
6. rizeagain - 0, 717
Therefore, the pairing for the first round should be the following:
(results are only for this example)
1. aljechin - Iongler: 0 - 1
2. Jewdoka - aenorman: 1 - 0
3. Pseudomonas - rizeagain 0 - 1
Therefore, the ranking changes to the following after the first round to this:
(for the sake of simplicity the secondary evaluation is based on the ELO of the given player - I know that it is differently in the BGA tournaments).
1. Jewdoka - 1, 848
--------------------------------------- (separates the group where each player has the same number of points = 1)
2. Iongler - 1, 792
3. rizeagain - 1, 717
=================== (separates the two groups)
4. aljechin - 0, 870
5. aenorman - 0, 748
--------------------------------------- (separates the group where each player has the same number of points = 0)
6. Pseudomonas - 0, 822
The pairing for the second round can be a quite complex task. I think it can be configured differently (different algorithm can be used). In case of chess and hive it should also consider the color of the players (I filed a separate request for that: boardgamearena.com/bug?id=18199). However, I won't deal with the colors in this example (I can prepare for you a separate one if you need it).
Based on the above separation of groups the 2. round could look like this:
1. Jewdoka - Iongler: this is obvious why they play together
2. rizeagain - aljechin: aljechin needed to be paired with rizeagain from the first group because the first group had an odd number of players. why aljechin and not the other two guys? it is because aljechin is was ranked higher at the given time
3. aenorman - Pseudomonas: this is obvious too• Qual è il tuo browser?
Google Chrome v81
• Quale parte delle regole non è stata rispettata dall'adattamento BGA
This improvement request is for games like hive and chess where one game is played by 2 players.
Besides the fact that in each round of a swiss tournament those players are paired to play against each other who have the same (or almost the same) number of points, the BGA swiss tournament pairing system works quite randomly. Besides that there should be a number of factors that should affect the pairing. One of these factors is the current ranking.
Please, consider improving the pairing system according to the standard Swiss-system: en.wikipedia.org/wiki/Swiss-system_tournament
Also, consider standarizing the BGA pairing system based on the rules of the International Chess Federation (FIDE): handbook.fide.com/chapter/C0401 and handbook.fide.com/chapter/C0402
(or at least you can read certain part of their documentation and get some inspiration).
Let me cite the relevant part of the above linked wiki page:
"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"".
"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."
For example:
Before the first round the ranking is based on the ELO of the players:
1. aljechin - 0, 870
2. Jewdoka - 0, 848
3. Pseudomonas - 0, 822
--------------------------------------- (separates the group where each player has the same number of points)
4. Iongler - 0, 792
5. aenorman - 0, 748
6. rizeagain - 0, 717
Therefore, the pairing for the first round should be the following:
(results are only for this example)
1. aljechin - Iongler: 0 - 1
2. Jewdoka - aenorman: 1 - 0
3. Pseudomonas - rizeagain 0 - 1
Therefore, the ranking changes to the following after the first round to this:
(for the sake of simplicity the secondary evaluation is based on the ELO of the given player - I know that it is differently in the BGA tournaments).
1. Jewdoka - 1, 848
--------------------------------------- (separates the group where each player has the same number of points = 1)
2. Iongler - 1, 792
3. rizeagain - 1, 717
=================== (separates the two groups)
4. aljechin - 0, 870
5. aenorman - 0, 748
--------------------------------------- (separates the group where each player has the same number of points = 0)
6. Pseudomonas - 0, 822
The pairing for the second round can be a quite complex task. I think it can be configured differently (different algorithm can be used). In case of chess and hive it should also consider the color of the players (I filed a separate request for that: boardgamearena.com/bug?id=18199). However, I won't deal with the colors in this example (I can prepare for you a separate one if you need it).
Based on the above separation of groups the 2. round could look like this:
1. Jewdoka - Iongler: this is obvious why they play together
2. rizeagain - aljechin: aljechin needed to be paired with rizeagain from the first group because the first group had an odd number of players. why aljechin and not the other two guys? it is because aljechin is was ranked higher at the given time
3. aenorman - Pseudomonas: this is obvious too• La violazione delle regole è visibile nel replay della partita? Se sì, a che numero di mossa?
• Qual è il tuo browser?
Google Chrome v81
• Qual era l'azione di gioco che volevi fare?
This improvement request is for games like hive and chess where one game is played by 2 players.
Besides the fact that in each round of a swiss tournament those players are paired to play against each other who have the same (or almost the same) number of points, the BGA swiss tournament pairing system works quite randomly. Besides that there should be a number of factors that should affect the pairing. One of these factors is the current ranking.
Please, consider improving the pairing system according to the standard Swiss-system: en.wikipedia.org/wiki/Swiss-system_tournament
Also, consider standarizing the BGA pairing system based on the rules of the International Chess Federation (FIDE): handbook.fide.com/chapter/C0401 and handbook.fide.com/chapter/C0402
(or at least you can read certain part of their documentation and get some inspiration).
Let me cite the relevant part of the above linked wiki page:
"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"".
"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."
For example:
Before the first round the ranking is based on the ELO of the players:
1. aljechin - 0, 870
2. Jewdoka - 0, 848
3. Pseudomonas - 0, 822
--------------------------------------- (separates the group where each player has the same number of points)
4. Iongler - 0, 792
5. aenorman - 0, 748
6. rizeagain - 0, 717
Therefore, the pairing for the first round should be the following:
(results are only for this example)
1. aljechin - Iongler: 0 - 1
2. Jewdoka - aenorman: 1 - 0
3. Pseudomonas - rizeagain 0 - 1
Therefore, the ranking changes to the following after the first round to this:
(for the sake of simplicity the secondary evaluation is based on the ELO of the given player - I know that it is differently in the BGA tournaments).
1. Jewdoka - 1, 848
--------------------------------------- (separates the group where each player has the same number of points = 1)
2. Iongler - 1, 792
3. rizeagain - 1, 717
=================== (separates the two groups)
4. aljechin - 0, 870
5. aenorman - 0, 748
--------------------------------------- (separates the group where each player has the same number of points = 0)
6. Pseudomonas - 0, 822
The pairing for the second round can be a quite complex task. I think it can be configured differently (different algorithm can be used). In case of chess and hive it should also consider the color of the players (I filed a separate request for that: boardgamearena.com/bug?id=18199). However, I won't deal with the colors in this example (I can prepare for you a separate one if you need it).
Based on the above separation of groups the 2. round could look like this:
1. Jewdoka - Iongler: this is obvious why they play together
2. rizeagain - aljechin: aljechin needed to be paired with rizeagain from the first group because the first group had an odd number of players. why aljechin and not the other two guys? it is because aljechin is was ranked higher at the given time
3. aenorman - Pseudomonas: this is obvious too• Cosa stai provando a fare per attivare questa azione di gioco?
• Cosa è successo quando hai provato a fare questo (messaggio di errore, messaggio nella barra di stato del gioco...)?
• Qual è il tuo browser?
Google Chrome v81
• In quale fase del gioco si è verificato il problema (qual era l'istruzione della partita in corso)?
This improvement request is for games like hive and chess where one game is played by 2 players.
Besides the fact that in each round of a swiss tournament those players are paired to play against each other who have the same (or almost the same) number of points, the BGA swiss tournament pairing system works quite randomly. Besides that there should be a number of factors that should affect the pairing. One of these factors is the current ranking.
Please, consider improving the pairing system according to the standard Swiss-system: en.wikipedia.org/wiki/Swiss-system_tournament
Also, consider standarizing the BGA pairing system based on the rules of the International Chess Federation (FIDE): handbook.fide.com/chapter/C0401 and handbook.fide.com/chapter/C0402
(or at least you can read certain part of their documentation and get some inspiration).
Let me cite the relevant part of the above linked wiki page:
"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"".
"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."
For example:
Before the first round the ranking is based on the ELO of the players:
1. aljechin - 0, 870
2. Jewdoka - 0, 848
3. Pseudomonas - 0, 822
--------------------------------------- (separates the group where each player has the same number of points)
4. Iongler - 0, 792
5. aenorman - 0, 748
6. rizeagain - 0, 717
Therefore, the pairing for the first round should be the following:
(results are only for this example)
1. aljechin - Iongler: 0 - 1
2. Jewdoka - aenorman: 1 - 0
3. Pseudomonas - rizeagain 0 - 1
Therefore, the ranking changes to the following after the first round to this:
(for the sake of simplicity the secondary evaluation is based on the ELO of the given player - I know that it is differently in the BGA tournaments).
1. Jewdoka - 1, 848
--------------------------------------- (separates the group where each player has the same number of points = 1)
2. Iongler - 1, 792
3. rizeagain - 1, 717
=================== (separates the two groups)
4. aljechin - 0, 870
5. aenorman - 0, 748
--------------------------------------- (separates the group where each player has the same number of points = 0)
6. Pseudomonas - 0, 822
The pairing for the second round can be a quite complex task. I think it can be configured differently (different algorithm can be used). In case of chess and hive it should also consider the color of the players (I filed a separate request for that: boardgamearena.com/bug?id=18199). However, I won't deal with the colors in this example (I can prepare for you a separate one if you need it).
Based on the above separation of groups the 2. round could look like this:
1. Jewdoka - Iongler: this is obvious why they play together
2. rizeagain - aljechin: aljechin needed to be paired with rizeagain from the first group because the first group had an odd number of players. why aljechin and not the other two guys? it is because aljechin is was ranked higher at the given time
3. aenorman - Pseudomonas: this is obvious too• Cosa è successo quando hai provato a fare questa azione di gioco (messaggio di errore, messaggio nella barra di stato del gioco...)?
• Qual è il tuo browser?
Google Chrome v81
• Per favore descrivi il problema rilevato. Se hai una schermata di questo errore (cosa buona e giusta), puoi usare Imgur.com per caricarla e fare copia/incolla del link qui.
This improvement request is for games like hive and chess where one game is played by 2 players.
Besides the fact that in each round of a swiss tournament those players are paired to play against each other who have the same (or almost the same) number of points, the BGA swiss tournament pairing system works quite randomly. Besides that there should be a number of factors that should affect the pairing. One of these factors is the current ranking.
Please, consider improving the pairing system according to the standard Swiss-system: en.wikipedia.org/wiki/Swiss-system_tournament
Also, consider standarizing the BGA pairing system based on the rules of the International Chess Federation (FIDE): handbook.fide.com/chapter/C0401 and handbook.fide.com/chapter/C0402
(or at least you can read certain part of their documentation and get some inspiration).
Let me cite the relevant part of the above linked wiki page:
"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"".
"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."
For example:
Before the first round the ranking is based on the ELO of the players:
1. aljechin - 0, 870
2. Jewdoka - 0, 848
3. Pseudomonas - 0, 822
--------------------------------------- (separates the group where each player has the same number of points)
4. Iongler - 0, 792
5. aenorman - 0, 748
6. rizeagain - 0, 717
Therefore, the pairing for the first round should be the following:
(results are only for this example)
1. aljechin - Iongler: 0 - 1
2. Jewdoka - aenorman: 1 - 0
3. Pseudomonas - rizeagain 0 - 1
Therefore, the ranking changes to the following after the first round to this:
(for the sake of simplicity the secondary evaluation is based on the ELO of the given player - I know that it is differently in the BGA tournaments).
1. Jewdoka - 1, 848
--------------------------------------- (separates the group where each player has the same number of points = 1)
2. Iongler - 1, 792
3. rizeagain - 1, 717
=================== (separates the two groups)
4. aljechin - 0, 870
5. aenorman - 0, 748
--------------------------------------- (separates the group where each player has the same number of points = 0)
6. Pseudomonas - 0, 822
The pairing for the second round can be a quite complex task. I think it can be configured differently (different algorithm can be used). In case of chess and hive it should also consider the color of the players (I filed a separate request for that: boardgamearena.com/bug?id=18199). However, I won't deal with the colors in this example (I can prepare for you a separate one if you need it).
Based on the above separation of groups the 2. round could look like this:
1. Jewdoka - Iongler: this is obvious why they play together
2. rizeagain - aljechin: aljechin needed to be paired with rizeagain from the first group because the first group had an odd number of players. why aljechin and not the other two guys? it is because aljechin is was ranked higher at the given time
3. aenorman - Pseudomonas: this is obvious too• Qual è il tuo browser?
Google Chrome v81
• Per favore copia/incolla il testo visualizzato in inglese invece che nella tua lingua. Se hai una schermata di questo errore (cosa buona e giusta), puoi usare Imgur.com per caricarla e fare copia/incolla del link qui.
This improvement request is for games like hive and chess where one game is played by 2 players.
Besides the fact that in each round of a swiss tournament those players are paired to play against each other who have the same (or almost the same) number of points, the BGA swiss tournament pairing system works quite randomly. Besides that there should be a number of factors that should affect the pairing. One of these factors is the current ranking.
Please, consider improving the pairing system according to the standard Swiss-system: en.wikipedia.org/wiki/Swiss-system_tournament
Also, consider standarizing the BGA pairing system based on the rules of the International Chess Federation (FIDE): handbook.fide.com/chapter/C0401 and handbook.fide.com/chapter/C0402
(or at least you can read certain part of their documentation and get some inspiration).
Let me cite the relevant part of the above linked wiki page:
"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"".
"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."
For example:
Before the first round the ranking is based on the ELO of the players:
1. aljechin - 0, 870
2. Jewdoka - 0, 848
3. Pseudomonas - 0, 822
--------------------------------------- (separates the group where each player has the same number of points)
4. Iongler - 0, 792
5. aenorman - 0, 748
6. rizeagain - 0, 717
Therefore, the pairing for the first round should be the following:
(results are only for this example)
1. aljechin - Iongler: 0 - 1
2. Jewdoka - aenorman: 1 - 0
3. Pseudomonas - rizeagain 0 - 1
Therefore, the ranking changes to the following after the first round to this:
(for the sake of simplicity the secondary evaluation is based on the ELO of the given player - I know that it is differently in the BGA tournaments).
1. Jewdoka - 1, 848
--------------------------------------- (separates the group where each player has the same number of points = 1)
2. Iongler - 1, 792
3. rizeagain - 1, 717
=================== (separates the two groups)
4. aljechin - 0, 870
5. aenorman - 0, 748
--------------------------------------- (separates the group where each player has the same number of points = 0)
6. Pseudomonas - 0, 822
The pairing for the second round can be a quite complex task. I think it can be configured differently (different algorithm can be used). In case of chess and hive it should also consider the color of the players (I filed a separate request for that: boardgamearena.com/bug?id=18199). However, I won't deal with the colors in this example (I can prepare for you a separate one if you need it).
Based on the above separation of groups the 2. round could look like this:
1. Jewdoka - Iongler: this is obvious why they play together
2. rizeagain - aljechin: aljechin needed to be paired with rizeagain from the first group because the first group had an odd number of players. why aljechin and not the other two guys? it is because aljechin is was ranked higher at the given time
3. aenorman - Pseudomonas: this is obvious too• Questo testo è disponibile nel sistema di traduzione? Se sì, è stato tradotto nell'arco di più di 24 ore?
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This improvement request is for games like hive and chess where one game is played by 2 players.
Besides the fact that in each round of a swiss tournament those players are paired to play against each other who have the same (or almost the same) number of points, the BGA swiss tournament pairing system works quite randomly. Besides that there should be a number of factors that should affect the pairing. One of these factors is the current ranking.
Please, consider improving the pairing system according to the standard Swiss-system: en.wikipedia.org/wiki/Swiss-system_tournament
Also, consider standarizing the BGA pairing system based on the rules of the International Chess Federation (FIDE): handbook.fide.com/chapter/C0401 and handbook.fide.com/chapter/C0402
(or at least you can read certain part of their documentation and get some inspiration).
Let me cite the relevant part of the above linked wiki page:
"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"".
"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."
For example:
Before the first round the ranking is based on the ELO of the players:
1. aljechin - 0, 870
2. Jewdoka - 0, 848
3. Pseudomonas - 0, 822
--------------------------------------- (separates the group where each player has the same number of points)
4. Iongler - 0, 792
5. aenorman - 0, 748
6. rizeagain - 0, 717
Therefore, the pairing for the first round should be the following:
(results are only for this example)
1. aljechin - Iongler: 0 - 1
2. Jewdoka - aenorman: 1 - 0
3. Pseudomonas - rizeagain 0 - 1
Therefore, the ranking changes to the following after the first round to this:
(for the sake of simplicity the secondary evaluation is based on the ELO of the given player - I know that it is differently in the BGA tournaments).
1. Jewdoka - 1, 848
--------------------------------------- (separates the group where each player has the same number of points = 1)
2. Iongler - 1, 792
3. rizeagain - 1, 717
=================== (separates the two groups)
4. aljechin - 0, 870
5. aenorman - 0, 748
--------------------------------------- (separates the group where each player has the same number of points = 0)
6. Pseudomonas - 0, 822
The pairing for the second round can be a quite complex task. I think it can be configured differently (different algorithm can be used). In case of chess and hive it should also consider the color of the players (I filed a separate request for that: boardgamearena.com/bug?id=18199). However, I won't deal with the colors in this example (I can prepare for you a separate one if you need it).
Based on the above separation of groups the 2. round could look like this:
1. Jewdoka - Iongler: this is obvious why they play together
2. rizeagain - aljechin: aljechin needed to be paired with rizeagain from the first group because the first group had an odd number of players. why aljechin and not the other two guys? it is because aljechin is was ranked higher at the given time
3. aenorman - Pseudomonas: this is obvious too• Qual è il tuo browser?
Google Chrome v81
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