You can train your brain to increase your score on any intelligence test. Essentially, intelligence is not fixed as it was once thought. Research has shown that fluid intelligence can be increased by the right types of exercises. While we have known that activities such as puzzles, memorization, and music have strong positive effects on intelligence, it was not until recently that actual scientific evidence in they way of controlled tests have shown strong linear correlation between performance on IQ tests and the following brain training exercise regimentation.
You can find free versions of the software that generates the exercises here: