Imagine there is a second guru (who is just as trusted as the first guru) who comes and goes from the island. The first guru made their statement in order to remove some politically difficult persons, who all happen to have blue eyes, from the island. The second guru wishes to keep these people alive.
1) If the second guru returns to the island the day of the guru's announcement and hears it what can they do to save the political people?
2) As above but the second guru returns the day after later rather than the next day. (generalise to n days)
3) Is there an announcement the second guru can make which guarantees the first guru's suicide but doesn't risk their own life? (let's pretend this question excludes explicitly telling the first guru "Your eyes are [insert color here]"