To find out what stairs you can currently challenge someone in, first go to the Main Stairs Page, then click on "Show your stairs only" link. The ones in BOLD are ones you can make a challenge in.
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Requests:
1) show the stairs in the game lists in the "event" column
2) show all ongoing games in the stairs page
Question:
what happens with the games when a player leaves the stairs? (the help page clarifies that qu only for retirement)
(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)