public IActionResult Index(int initialX, int initialY, int instantaneousX, int instantaneousY, string count, int color, string onMessage)
        {
            if (onMessage == "Update")
            {
                board         = HttpContext.Session.GetObject <Board>(count);
                model.Squares = board.AllSquares;
                model.Counter = count;
                model.Color   = color;
                return(View(model));
            }
            board = HttpContext.Session.GetObject <Board>(count);
            board.TakeBackCastAll();
            Square secondClickSquare = board.AllSquares.Select(t => t).Where(t => t.Coordinate.X == instantaneousX && t.Coordinate.Y == instantaneousY).FirstOrDefault();

            if (secondClickSquare != null)
            {
                if (secondClickSquare.Coordinate.X == instantaneousX && secondClickSquare.Coordinate.Y == instantaneousY)
                {
                    Square firstClickSquare = board.AllSquares.Select(t => t).Where(t => t.Coordinate.X == initialX && t.Coordinate.Y == initialY).FirstOrDefault();

                    if (firstClickSquare.Piece != null && (int)firstClickSquare.Piece.Color == color)
                    {
                        if (firstClickSquare.Piece.Touchable == false)
                        {
                            King king = (King)firstClickSquare.Piece;
                            king.CheckCounterPiece(secondClickSquare, board);
                            if (firstClickSquare.Coordinate.X == 4 && (firstClickSquare.Coordinate.Y == 1 || firstClickSquare.Coordinate.Y == 8) && secondClickSquare.Coordinate.X == 2 && (secondClickSquare.Coordinate.Y == 1 || secondClickSquare.Coordinate.Y == 8))
                            {
                                if (!king.ShortCastle(board))
                                {
                                    if (onMessage == "Yes")
                                    {
                                        color = 1 - color;
                                    }
                                    board.CastAll();
                                    HttpContext.Session.SetObject(count, board);
                                    model.Squares = board.AllSquares;
                                    model.Counter = count;
                                    model.Color   = color;
                                    return(View(model));
                                }
                            }
                            else if (firstClickSquare.Coordinate.X == 4 && (firstClickSquare.Coordinate.Y == 1 || firstClickSquare.Coordinate.Y == 8) && secondClickSquare.Coordinate.X == 6 && (secondClickSquare.Coordinate.Y == 1 || secondClickSquare.Coordinate.Y == 8))
                            {
                                if (!king.LongCastle(board))
                                {
                                    if (onMessage == "Yes")
                                    {
                                        color = 1 - color;
                                    }
                                    board.CastAll();
                                    HttpContext.Session.SetObject(count, board);
                                    model.Squares = board.AllSquares;
                                    model.Counter = count;
                                    model.Color   = color;
                                    return(View(model));
                                }
                            }
                        }
                        if (firstClickSquare.Piece != null)
                        {
                            if (firstClickSquare.Piece.MoveTo(secondClickSquare, board))
                            {
                                if (!secondClickSquare.Piece.DiscoverCheckToMove(board))
                                {
                                    secondClickSquare.Piece.MoveBack = true;
                                    secondClickSquare.Piece.MoveTo(firstClickSquare, board);
                                }
                                else
                                {
                                    secondClickSquare.Piece.StateOrder(board);
                                }
                            }
                        }
                        if (onMessage == "Yes")
                        {
                            color = 1 - color;
                        }
                        board.CastAll();
                        HttpContext.Session.SetObject(count, board);
                        model.Squares = board.AllSquares;
                        model.Counter = count;
                        model.Color   = color;
                        return(View(model));
                    }
                }
            }
            if (onMessage == "Yes")
            {
                color = 1 - color;
            }
            board.CastAll();
            HttpContext.Session.SetObject(count, board);
            model.Squares = board.AllSquares;
            model.Counter = count;
            model.Color   = color;
            return(View(model));
        }