1) The throne can be used only to capture the king, not the "normal" pieces.
2) Yes, it should be considered as a draw but this site does not support a perpetual check detection yet. What you can do in such situation is to send a message to me and I will set a draw manually.
(do skréše) Nebavi tě prokósávat se na oblébeny léstke přes dvě, tře bóchnuti do meše? Cálojici členi mužó šópnót jaké léstek chcó do kontextovy nabidke. (pauloaguia) (okázat šecke vechetávke)