dreamed up a plan that i'd just walk from every S1-9 terminus back to Prague, but even if I play it bit loose, some destinations are just way too hardcore, like, ok, Nymburk? I don't think so
so S2 is really damn hard, the rest has some half-way half-interval termini that I am willing to take (like Český Brod for S1, Strančice for S9 or possibly Nučice for S6), which still means Beroun and Čerčany for S7 and S8, that would also be tough...
