public class King : ChessFigure
{
    public override bool[,] PossibleMove()
    {
        bool[,] r = new bool[8, 8];

        ChessFigure c;
        int i, j;

        // Top
        i = CurrentX - 1;
        j = CurrentY + 1;
        if(CurrentY < 7)
        {
            for(int k = 0; k < 3; k++)
            {
                if(i >= 0 && i < 8)
                {
                    c = BoardManager.Instance.ChessFigurePositions[i, j];
                    if (c == null) r[i, j] = true;
                    else if (c.isWhite != isWhite) r[i, j] = true;
                }
                i++;
            }
        }

        // Bottom
        i = CurrentX - 1;
        j = CurrentY - 1;
        if (CurrentY > 0)
        {
            for (int k = 0; k < 3; k++)
            {
                if (i >= 0 && i < 8)
                {
                    c = BoardManager.Instance.ChessFigurePositions[i, j];
                    if (c == null) r[i, j] = true;
                    else if (c.isWhite != isWhite) r[i, j] = true;
                }
                i++;
            }
        }

        // Left
        if(CurrentX > 0)
        {
            c = BoardManager.Instance.ChessFigurePositions[CurrentX - 1, CurrentY];
            if (c == null) r[CurrentX - 1, CurrentY] = true;
            else if (c.isWhite != isWhite) r[CurrentX - 1, CurrentY] = true;
        }

        // Right
        if (CurrentX < 7)
        {
            c = BoardManager.Instance.ChessFigurePositions[CurrentX + 1, CurrentY];
            if (c == null) r[CurrentX + 1, CurrentY] = true;
            else if (c.isWhite != isWhite) r[CurrentX + 1, CurrentY] = true;
        }

        return r;
    }
}