the center, vulnerability of the king to check, vulnerability of the opponent's queen, and tons of other parameters. No matter how complicated the function gets, however, it is condensed down to a single number that represents the "goodness" of that board position. Three-Level Tree Diagram The following diagram shows a three-level tree that looks three moves ahead and has evaluated the value of the final board positions: The computer is playing Zapata broadband , Zapata, TX broadband ZapataZapata , broadband Texas, Zapata broadband
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