1. e2e4  1... c7c5  2. g1f3  2... b8c6  3. d2d4  3... c5d4  4. f3d4  4... g8f6  5. b1c3  5... d7d6 The Classical line  is a rare choice in the practice of the world champion. 6. c1g5  6... c8d7  7. d1d2  7... a7a6  8. e1c1  8... e7e6  9. f2f4  9... f8e7 