I'm not very good at clues, to be honest (in the early games, there was at least a little bit, but it was easier), so I can't say for sure, but doesn't it seem to you that there's no way back from Hosrov to Shanhame? There's not even a single mention on the Wiki.
MasteR, if I'm not mistaken, it was you who said in ToX's game that a clue can't be one-sided, right?

+why kill another when the third ignores the block?