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Chess Engine in C Part 6: How Attacked Squares Are Detected

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The sixth installment of a series on building a chess engine in C focuses on detecting attacked squares. An attacked square is one a piece could move to and capture on, regardless of whether a piece currently occupies it. The author explains how each piece's movement pattern is encoded using direction offsets on a 12x10 mailbox board. A SqAttacked function then checks pawns, knights, sliding rooks and queens, bishops and queens, and kings in turn to decide whether a given square is under attack by a specified side.

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