I would understand more if you described this situation in more general terms. From what you described, a Tree with many branches at any node (n-ary tree) may be a suitable data structure to evaluate all scenaria at any depth you wish, given available resources. There are algorithms to find the route with the least cost. A hash (of hashes) can also be used but you will have to implement the search algorithms yourself. In a multi-player game such trees are used to enumerate all available moves/choices/scenaria by all the players at any depth (given resources!ouch!) Then winning the game is a matter of following the branches which minimise your costs (and maximise your opponents'), re: the minmax algorithm, assuming your opponents also make reasonable moves.

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