I'm brand new here and already a question/comment : )
About capturing the king with only three attackers and the castle (rule linnaeus 11): as was pointed out earlier, why can't the king just pass the throne? I suggest it is because the throne can't be passed at all, by no person at all. Maybe the text of figure 1 "to which no other person can be admitted" was incorrectly interpreted as "no-one can occupy the throne, but can pass over it since it is not mentioned in rule 2." Maybe it should be interpreted as "no-one can occupy nor pass the throne." Then rule 11 would make more sense.
I don't know if this interpretation is plausible but it would influence the game a lot (more than accepting rule 10 for instance).
I'd like to hear some opinions about this...