The key to beating any team is to go out and expose their weaknesses right away. Fortunately, Arsenal have a lot of them.
First off, they have two key suspensions. Alex Song is an important player in the heart of their midfield, and his absence will allow Liverpool to play with an attacking central midfielder to release the forwards (like Alberto Aquilani). Gervinho will also be missing after slapping Joey Barton.
With Robin van Persie now the only attacking threat, it wouldn't be out of the realm of the possibility to see Liverpool play a three-defender system.
Arsenal will also be without their former best midfielders. Cesc Fabregas has left for Barcelona, and Samir Nasri will probably be out of the lineup again with a move to Manchester City on the horizon.
Match that with the fact that Jack Wilshere is injured and you have a weak midfield. Liverpool need to control the centre of the pitch early and need to hold that throughout.
Finally, Arsenal have a lack of significant size at defense. That makes a perfect situation for...