i want to use a* in finding the minimum steps to make the puzzle unary in color. but i don't know how. I don't even know if it is feasible. A* searches from a starting point to a destination. In this case, the flood-it game, there's no specific destination because the goal of the game is to make the color unary.

If im to code it, the input would be a graph, then i will convert it to a tree wherein it is all the possible paths, then check what node has the smallest value of level, then that would be the min step. Its just that i think its too slow. And its brute force. Im just thinking maybe there are other ways not brute force or maybe theres something with a*

if you have some thoughts please share it.
please help me. thanks.

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I'm not seeing why you want to use A*.

Have a look at these instead.

Strilanc said "
A* is just a prioritized graph search. Each node is a game state, you rank nodes based on some heuristic, and always expand the lowest-expected-final-cost node. As long as your heuristic doesn't underestimate costs, the first solution you find is guaranteed to be optimal."


many people posting on their blogs about this A* in flood it.

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