// 電腦下棋

class OthelloAI
{
	private int color;
	public OthelloAI(int c)
	{
		if (!(c == Cyberthello.WHITE || c == Cyberthello.BLACK))//不是黑子也不是白字
			throw new IllegalArgumentException("Invalid value for color: " + c);//拋出錯誤，落子顏色不對
		color = c;//把顏色置成電腦所執(zhí)的顏色
	}
	public Move chooseMove(OthelloBoard board)
	{
		for (int r = 0; r < 8; ++r)
			for (int c = 0; c < 8; ++c)
			{
				Move move = new Move(r, c);
				if (board.isValidMove(move, color))
					return move;
			}
		return Move.pass;
	}
}