[Whismerhill]

and in fact it's not too hard to AT THE VERY LEAST make AI not know your next move:
simply it could take precedent turn data to make his decisions and adding just a little random in that so that AI could 'guess' where your armies are

that seems not too complicated and furthermore while calculating data of the previous turn could be saved in a 'previous turn file'

Ps: I would like an developper point of view on the subject