1. d2d4  1... d7d5  2. g1f3  2... g8f6  3. c1f4  3... c7c5  4. e2e3  4... e7e6  5. b1d2  5... d8b6  6. c2c4 [%c_effect c4;square;c4;type;Interesting;persistent;true] Mamedyarov, of course, plays the London System in an enterprising way. This dynamic move is rare, but has been played a few times by Erigaisi recently. 6... b8c6 [%c_effect c6;square;c6;type;GreatFind;persistent;true] The best reply. Accepting the pawn is too risky. 7. f1d3 Played after a long think. This is an important position for opening theory. 7... c5d4  8. e3d4 The real novelty. 8... c6d4  9. e1g1  9... f8e7  10. c4d5 