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Some stories from the world of chess...
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Hutton Pairing

Hutton pairing is a system of matching many teams while demanding only one game from each player taking part. It was devised in 1921 by a Scottish clergyman, George Dickson Hutton (1866 - 1929), and has been used regularly for correspondence team events and for matches where many teams assemble on one day, for this reason it is sometimes called "jamboree pairing".

The players in each team are ranked in order of strength and each player meets someone of similar ranking. When the number of teams is one more than the number of boards, each team meets every other team on one board only. Organisers use pairing tables which enable them to cope with any number of teams and any number of boards.


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Reliability Calculation

The server calculates a reliability factor for each player according to their actions in the past few weeks.
This value is influenced by many different things, for example if their settings are correct, if they had a timeout in a game, or if they have unannounced vacations, etc.
The value is always between 0 and 10.

New players start at 3.5.
After they set up their basic settings such as the country code, gender, real name, birth year, this value goes up to 5.
If they successfully start few games and also finish them in order, without timeouts, silent vacation, the value raises around 6.
As they finish more games, and as the time goes without any problem with them, the value still raises.
Players with many months of membership and with a lot of games and without any problems can go over 9.

This may help players to find the right opponents, and may give them an approximate view about their future opponents, without personally knowing them.
Protecting serious club members, players with too low reliability (less than 5) can't enter for new tournaments.
 
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