1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. b1c3  4... f8b4  5. c1g5  5... h7h6  6. g5f6  6... d8f6  7. e2e3 In the Ragozin defence both players follow an earlier game of theirs, played six years ago. 7... e8g8  8. a1c1  8... d5c4  9. f1c4  9... c7c5  10. e1g1  10... c5d4  11. c3e4 That is still the previous game. 11... f6e7  12. f3d4 Only here does Mamedyarov deviate. He decided to try and win without any strategical risk, in a symmetrical position. 12... c8d7  13. c4e2  13... b8c6 