Anand is human - shock!

We all know that chess is a difficult game, so it is somehow reassuring when a top player makes a mistake - and they don't come any better than World Champion Vishy Anand from India.

In his second round game at the current Linares tournament, Anand overlooked a nice tactic to lose dramatically against Aronian.  See if you can spot what he missed...Anand had just played Nd2-f3.  What did Aronian play next?