When Opportunity Knocks II

                                                                                                         
The position below is from the game Mikheil Mchedlishvili - Evgeniy Podolchenko,
round 8 of the Chess Olympiad 2010 in Khanty-Mansiysk, Russia. 

Black has just played Qc3-e5?? A better move would have been to play Qf6.
White has now the chance to play a very strong move.
                          
                       

Solution