There are following chart categories available for chess:

Chess chart

Chess chart is a list of the most active players. It is calculated in relative numbers. The maximum value – 10 points – is always attributed to the first position in the chart. This value is accounted while calculating a total rating of the user on the site.

Chess rating is in no way connected with the position in the chess chart.

The most successful players

This list includes those players bearing the highest ratio between won and lost games. This value is not accounted either while calculating a total rating of the user on the site, or while balancing his/her chess rating.

The most dynamic players

The list includes those players who has the most changed position in the chess chart as compared with last Sunday.

A system by professor Glicko is used to calculate chess rating.

Its main difference from Elo rating consist in the index of statistical error (rating deviation) which depends not on a player’s activity, but on the amount of time of his/her inactivity. The more he/she is idle, the more the discrepancy is. The discrepancy is individual for each player. Thus the rate of incrementation of a rating may differ between players after a game. The player who haven’t played for a longer time will have more incrementation. For example, a player can get 100 points for a win, but in the meantime his/her opponent can lose only 10. More details here.

A player has individual ratings for each type of game and time, that is games of different time and type of game are calculated separately.

Rating deviation

Rating deviation is used not only to determine rating gain more accurately, but to calculate player's activity rate also. At the present time the threshold value amounts to 70. You can see this value on chess statistics page. Those players who have value more than 70 do not participate in

• Chess rating
• The most successful players rating

Top users based on chess rating

Those players having the highest rating in a certain category of game and time are included in the top of the players. Apart from the high rating, the player should have rating deviation (RD) not exceeding 70.

To enter the rating you have to play often and successfully.

Today there are three options of user registration based on Partner Network available:

• Registration payment of all users, including anonymous users.
• Registration payment of real users, excluding anonymous.
• Registration payment of active users. By “active users” we mean those actively participating in site activities, hereinafter referred to as “participants”.

Anonymous registration

All users are registered, including anonymous. If you don’t think that your users will stay on our site, this option is just for you.

User registration

All users are registered, excluding anonymous. This is an intermediate option between players registration and anonymous users registration. This option will suit you best if you don’t expect a lot of users from your site to take part in our site’s games.

Participant registration

In this option only those who took part in any game available on the site (i.e. chess) can register. If your site is visited by a target group, you’d better use this option.

Actually, you can’t change a user nickname, but those users who have registered within last two weeks still have this opportunity. All you need is to confirm your email address.

If you still haven’t confirmed your email address, “Change nickname” button in your profile is dimmed, which means that the option is not accessible.

If you have confirmed your email account, you should see this picture.

To change a nickname you have to click on “Change nickname” and then click on “Send code” in a new window.

You will receive a code in your email inbox. You need it in case if somebody gets an access to your personal office (by means of a stolen cookie, for example), he would not be able to change the nickname. As soon as you get the code, enter it in the next form (you can also open it from your office).

After successfully entering the code, you have to log on to the site again using your new nickname. The old one is deleted from the database and can be registered again by other users.

Very often (each day, as a matter of fact) we receive messages regarding chess timing problems. They go like this:

What should I do if in a lost position the opponent leaves for timing correction and doesn't come back for a very long time. Guest80732 is well known for it.

If I have to leave for a minute what should I do to suspend my timing? My opponents take advantage of it but I don't know which button to hit.

Dear users! Nobody here is fiddling with timing. It is theoretically very complicated in the current configuration of the applet, and practically impossible. Your opponent has precisely the same interface as you do and can not suspend or add time. All timing operations are conducted at the server's side.

I strongly recommend you to read:

• Applet timing problems during a chess game
• How to adjourn a game

Onsite chat is turned off at the moment. Online dialogue is allowed only during a chess game with the following limitations:

1. Writing and sending messages is allowed only in your own time.
2. Chatting is allowed only during a game. Chatting after a game will be accessible in the nearest releases.

If you have any questions or requests, please write them as comments to this post.

Rating is a complex numeric degree of user's activity on the site. The more user participates in site's life, the higher is his/her rating.

Rating is a relative dynamic value. In other words, it

1. Varies with time. Having achieved a certain rating and finished any participation in site's activities, you are sure to lose points.
2. The point of reference is one. The first place in the rating is always 10 points. All other user's points are ratios from the first place.

There is a rating for each game. It is in no way connected with user's rating on the site. More details:

• Chess rating

From the point of view of the system an anonymous user is the same as a registered one. Although it is important that the lifetime of an anonymous user is limited. If an anonymous user isn't using the site for a certain period of time, his/her account is going to be deleted. All user information is either cleaned or impersonalized.

Besides, an anonymous user has less possibilities while using the site. For example, he/she can not create and keep a blog or can not participate in site ratings. Any anonymous user can become a registered user without losing any information regarding his profile.

While playing chess, an anonymous user has the following essential limitations:

1. Closing an applet leads to an automatic loss in a game.
2. In any adjourned game an anonymous user is considered as defeated. If there are adjourned games with an anonymous user as a player means that these games were adjourned by registered users. For example, game Misterx — Guest65231. We can see that it is Misterx's turn to move but he is not considered as defeated because he is a registered user.