1. e2e4  1... c7c5  2. b1c3  2... d7d6  3. f2f3 It's not the first time that the world champion  used this rare line. 3... b8c6  4. f1b5  4... g7g6  5. g1e2  5... f8g7  6. d2d4  6... c5d4  7. e2d4  7... c8d7  8. c1e3  8... g8f6  9. d1d2 