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  9. c2c3  9... e8g8  10. b3c2  10... f8e8  11. f1e1  11... h7h6  12. b1d2 