The rule is that you cannot surround an army/general to kill it, but the blocking of its escape is allowed... There is no rule breaking, but I will quickly write up the rules to use.
Stealing generals with princesses is at 35% (if you dont want generals to be stolen use WRM

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Cannot surround an army to kill it, the blocking of its escape is allowed.
No heroic victories
forts forts forts.... assuming everyone has been playing to two forts per region? If not plz say
EDIT: themzr I killed baeron in our little... halted spar. Altho in future I may ask you to do some balance testing... but that is off topic