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A puzzle where you have to optimize a certain objective function (maximize profit, minimize cost). There should ideally be a provable best answer, to avoid making the puzzle into an [open-ended] game.
2
votes
Will a greedy algorithm solve Tatham's Flood?
Using a greedy algorithm usually gets you to a nearly optimal solution, or even optimal, but it's no ensured.
If you want to find the solution that gets you to solve the puzzle in minimum moves (that …