nine board positions, white can make two possible moves. (In real life, the total number of moves from any position is 20 or so, but that would be hard to draw.) To decide what to do, the computer looks at this tree and works upward from the bottom. Its calculations are set up so that it finds the best board positions from each of the possible positions black will take (it Falls City broadband , Falls City, TX broadband Falls CityFalls City , broadband Texas, Falls City broadband
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