Stormerne: Is it really necessary to complicate the rules? I think, we could ignore the situation, that the black player fails to note that the king can reach the edge with the next move. So what's the difference whether black resigns immediately or just plays another move?
I would always vote for rules as simple as possible ...
(kaŝi) Se vi volas eltrovi pli pri iuj ludoj, vi povas rigardi en la sekcio "Ligiloj" ĉu vi trovas tie interesajn ligilojn. (pauloaguia) (Montri ĉiujn konsilojn)