public static int calcDiff(int score,int nscore,int games){
  return (int)Math.round(1.2 * Math.sqrt((nscore + score * 1.1 + 1) / (games + 1)));
}

public static int calcDiff ( int score , int nscore , int games ) { return ( int ) Math . round ( 1.2 * Math . sqrt ( ( nscore + score * 1.1 + 1 ) / ( games + 1 ) ) ) ; }
calculate difficult ( level ) based on score difference and ammount of games
