Hi all!
At Stormbirds site you can find a test for 'Experten' which deserves a nice try here:
http://www.stormbirds.com/common/challenge.htm
Quick reaction for typing the right letter corresponding to the solution is needed, as you run out of time in a blink.
At the end of the test, you can scroll down to the bottom of the page to find out the rank you deserve given the amount of right answers accounted.
Good luck mate!
Engadin.