board position, and then black has 20 or so moves it can make, and so on. This is how a computer looks at chess. It thinks about it in a world of "all possible moves," and it makes a big tree for all of those moves, like this: In this tree, there are 20 possible moves for white. There are 20 * 20 = 400 possible moves for black, depending on Biglerville dial up internet access, Biglerville, PA up internet access dial BiglervilleBiglerville up internet access, dial Pennsylvania, Biglerville dial up internet access
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