How to make your opponent resign in a chess game

Grandmaster Alexandra Kosteniuk hosts this chess tips video tutorial. Today's chess position is from the game Aronian vs Radjabov, in Monaco (2007). White has just played C2-C4, and it's Black to move. How does Black continue?

Well, you can rest assured that White moving his pawn up from C2 to C4 was a big mistake. Wan to know why? Well, just watch this video to see how to play a real game of chess, correctly, where resignation is not a problem.

LEVEL: Easy
CATEGORY: Opening