private string FillWaterSquares()
        {
            var processed = Processed.Cast <Square>()
                            .Where(x => x.SquareType == SquareType.Water)
                            .Order();

            WaterSquares = new List <Square>();

            var added = new List <Square>();

            foreach (var item in processed)
            {
                WaterSquares.Add(item);
            }

            return(null);
        }