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Artificial Intelligence with Python by Prateek Joshi

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Building an 8-puzzle solver

8-puzzle is a variant of the 15-puzzle. You can check it out at  https://en.wikipedia.org/wiki/15_puzzle. You will be presented with a randomized grid and your goal is to get it back to the original ordered configuration. You can play the game to get familiar with it at  http://mypuzzle.org/sliding .

We will use an A* algorithm to solve this problem. It is an algorithm that's used to find paths to the solution in a graph. This algorithm is a combination of Dijkstra's algorithm and a greedy best-first search. Instead of blindly guessing where to go next, the A* algorithm picks the one that looks the most promising. At each node, we generate the list of all possibilities and then pick the one with the minimal cost required ...

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