1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... f8e7  6. d2d3 A popular line  nowadays. White hopes to outplay his opponent in the arising lengthy  maneuvering battle. 6... b7b5  7. a4b3  7... d7d6  8. a2a4  8... c8d7 