bool WrongInput = true;
            while (WrongInput)
            {
                getline(cin, Input);
                if (!regex_match(Input, InputRegex)) { ErrorMessageGenerator(WrongFormat); continue; }
                int Index = Convert((int)Input[0], (int)Input[2]);
                vector<int> Empties = GameBoard.EmptyCells();
                if (find(Empties.begin(), Empties.end(), Index) == Empties.begin()) { ErrorMessageGenerator(WrongInput); continue; }
                WrongInput = false;
            }