[
    {
        "n_min": 10,
        "n_max": 20,
        "m_min": 5,
        "m_max": 10,
        "p_unsolvable": 0.4
    },
    {
        "n_min": 5,
        "n_max": 15,
        "m_min": 4,
        "m_max": 8,
        "p_unsolvable": 0.35
    },
    {
        "n_min": 5,
        "n_max": 10,
        "m_min": 3,
        "m_max": 5,
        "p_unsolvable": 0.3
    },
    {
        "n_min": 5,
        "n_max": 15,
        "m_min": 3,
        "m_max": 7,
        "p_unsolvable": 0.25
    }
]