1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. g1f3  4... d7d6  5. d1c2  5... e8g8  6. c1d2  6... b7b6 [%c_effect b6;square;b6;type;GreatFind;persistent;true] A good and provocative move, allowing White to advance the pawn to e4. 7. e2e4  7... c7c5 [%c_effect c5;square;c5;type;GreatFind;persistent;true] The only way to justify Black's previous move. This must be accurately calculated or prepared. 8. a2a3  8... b4c3  9. d2c3  9... c5d4  10. f3d4  10... e6e5 [%c_effect e5;square;e5;type;GreatFind;persistent;true] If Black allows White to develop the pieces, then he manages to stabilize the game and has a lasting advantage thanks to the bishop pair and the space advantage. 11. d4f5 It's not clear that this is the best move. 11... c8f5  12. e4f5  12... b8c6  13. e1c1 [%c_effect c1;square;c1;type;GreatFind;persistent;true] 13... a8c8  14. c2d3  14... d8c7  15. d3d6 [%c_effect d6;square;d6;type;Inaccuracy;persistent;true] This is clearly wrong, since the endgame is very comfortable for Black. 15... c7d6  16. d1d6  16... f6e4 Black has clearly won the opening battle. 17. d6d7  17... e4c3 A difficult decision. Taking on f2 is also tempting. 18. b2c3  18... f8d8  19. d7d8  19... c6d8 [%c_effect d8;square;d8;type;GreatFind;persistent;true] The knight will be moved to c5. 20. f1e2  20... g8f8  21. h1d1  21... f8e7  22. d1d5  22... f7f6 