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.
(peida) Kui Sa tahad kedagi tema emakeeles tervitada, vaata meie Mängija Sõnastikku "veel keeltest" lingil lippude all. (pauloaguia) (näita kõiki vihjeid)