In his book Playing to Win: Becoming the Champion, David Sirlin applies Sun Tzu's The Art of War, one of the oldest military treatises in the world, to specific tactics that can be used to gain an edge in competitive videogaming. Sirlin's believes that "playing to win" is the most important, and yet the most misunderstood, concept in all of competitive games. He began writing about this concept on his website. With his book Playing to Win, Sirlin has refined his ideas and expanded on everything he's learned. He spoke with GamePro about his strategies, his influences, and his approach to competitive gaming.