I want to join Ultranet.
It requires me to have an IQ of 164 or more, or "equivalent".
Getting an IQ tested is not easy. Most tests max out at 140. Mensa won't disclose test results, so having passed their admission test tells me little. The minimum isn't even 140! Much less 164. You have to find a psychologist who administers IQ tests. First of all they're hard to find. Look up psychometric testing, and you get a very few referrals to...psychologists who do testing for the court system to decide what's wrong with you. :(
While searching for clues as to where to find what I'm looking for, I found lots of articles regarding testing of children for certain highly competitive schools. Reading the articles was discouraging. A lot of severely neurotic yuppies seem to feel that having a psychologist give their kids some puzzles to solve is going to traumatize the kid for life.

The problem is more likely to be the parent than the kid.
I had my IQ tested when I was a kid, a couple times. One time it came out 141, another time 150. 141 < 164. Problem? Not necessarily. I think IQ is somewhat fluid. I'm probably doing better than when I was a kid, due to improved environment. To raise your IQ, play lots of pattern-matching games and puzzles. In fact, IQs are normed but over time they've been rising in absolute terms--the "Flynn Effect"--due to young people playing with too many electronic gadgets.

Unfortunately it's rewiring their brains for higher IQ but lower executive functioning.

Anyway if I'm going to pay someone $300 for testing services he'd better come up with the magic number 164 or greater. So I'd better train up to it.
Wish there were a good self-test I could use for feedback to see if I'm even in the ballpark, and going in the right direction. It would be sad if I got dumber. I'm afraid that's probably possible too. There have been times in my life when I've been pretty dumb. I was probably getting dumber and dumber in school and especially in college.
IQ tests are usually heavily-weighted to pattern matching. The Mensa IQ test I took had some other types of problems, which is good but probably still not really a wide measure of intelligence. The problem with Mensa is that it's full of people who are good at puzzles but not much else. :( That might be my problem too.
A few puzzles a day, a few games of skill one or twice a week, plus stuff I'm always doing.