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. .
I know it probably too late, but I would have preferred to see the standard lenght set at 3 days rather than 4 days. (And yes, I know you can play faster, but if I only take the games from the top of my time sorted list they do not get there as fast.)
(sakla) If you are waiting for your turn, click on "change" next to the "refresh" on the main page, then set refresh the page to 30 seconds to get your turn to move displayed faster. (Servant) (Bütün ipuçlarını göster)