I played a 4-5-1 Flat team in the Champions League. I lost the first leg, at home, with my usual formation. I played the second leg 3-5-2 Flat, using Long passing in my tactics to get to my 2 strikers. I beat him on aggregate!

The best guide on counter formations is July Fourth's "Table of Counter Formations - what to Use?"

http://forum.topeleven.com/formation...-what-use.html