Test your reading skills

I just found an interesting site on the internet: Go-test

This test checks your reading skills by showing 20 different board positions where you have 5 possible choices. Each of them gives you a specific score and, at the end, you'l get an approximation of your current reading level.

It classifies me as a 5k, though I was recently crushed by a 8k player... so I've got my doubts about its accuracy...