void board (int wiersze, int kolumny)
{
    for (int i = 0; i < wiersze; i++)
    {
        for (int j = 0; j < kolumny; j++)
        {
            plansza[i][j] = 10;
        }
    }

    cout << "  ";
    for (int i = 0; i < kolumny; i++)
    {
        cout << i << " ";
    }
    cout << "\n";

    char aktualny_wiersz = 'A';

    for (int i = 0; i < wiersze; i++)
    {
        cout << aktualny_wiersz << " ";
        aktualny_wiersz++;
        for (int j = 0; j < kolumny; j++)
        {
            cout << "#" << " ";
        }
        cout << "\n";
    }
}