Winning Chess Tactics - Alekhine's Defense

The Alekhine's defense has never held the respect that has been given to the Sicilian defense and the Ruy Lopez because most masters feel is it a bit too chancy. The idea is for black to provoke an advance in the center at the expense of a tempo (lost by black's king's knight)giving black targets to attack with the idea that white's center may become overextended and collapse.