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Some stories from the world of chess...
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ELO Rating

Muscler An ELO rating is the result of statistical calculations designed to measure the playing strength of players. These methods were developed by Arpad Elo and are named after him. The ELO system is in almost universal use and has been further refined by others, notably Glicko, but is still named after its creator.

In devising the ELO scale, some premises were used that are worthy of note. It was decided that a rating of 2000 would be the equivalent to scoring 50% in a US Open Championship. It was also decided that a player's rating would never be negative.

Importantly, the standard deviation was fixed at 200 points. This means that if a player's true strength is 1500, he will score around 68% of his results within the range of 1400 to 1600 (as measured by performance formulae). Another result of fixing the standard deviation at 200 points is that it also defines playing categories. For example, most International Masters and Grandmasters are in the 2400 - 2600 category, most national masters in the 2200 - 2400 category. Those in the 2000 - 2200 category are called Experts, or Candidate Masters.


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Tournaments

There are chess tournaments in the club continuously.
Now single round-robin, class based tournaments run only. They are class based that ensures players in similar ratings play each other. The games run simultaneously in round-robin tournaments, so a seven player event means 6 games in one time.
There are single class tournaments, where players of each 200 points class play each other. These events are always for 7 players.
And there are multi-class tournaments also, where players from 3 neighbor classes can play in. These are always for 9 players.

Whenever a tournament fills up, another one starts with the same parameters.

To protect serious players, new members can enter for tournaments after they have finished 5 games in order, and if their reliability factor is not below the value of 5.

In more details on the Tournaments page.
 
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