float probability;
    probability = (float) 0.0;

    int magnitude;
    magnitude = 0;

    char dificulty;
    dificulty = '0';

    magnitude = this.getMagnitude();

    dificulty = this.getDificulty();

    switch (dificulty)
    {
        case 'B':
        case 'b':
            probability = (float) ((magnitude/100) * 20);
        break;

        case 'I':
        case 'i':
            probability = (float) ((magnitude/100) * 30);
        break;

        case 'A':
        case 'a':
            probability = (float) ((magnitude/100) * 50);
        break;

        default:
            probability = -1;
            System.err.println("EEROR!");
        break;
    }

    mines = (int) probability;

    return mines;
}