The "Refresh" value means the automatic refresh period of all related pages (i.e. main page and game pages waiting for the opponent's turn). This feature was requested by several users who wanted to be still informed about the status of their started games without manual clicking on "Main page" link. If you set Refresh to some non-zero value and nothing happens after the selected time period, your browser probably does not support automatic page refresh.
(hide) If you want to play a game with an opponent of a similar level, you can define a required BKR range for a new game invitation. Then nobody with a BKR outside this range will be able to see/accept it. (Katechka) (show all tips)
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