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  23. c1c2  23... d8b7 Black's compensation for the pawn is more than enough, but the game should be drawn. 24. c2b3  24... b7c5  25. b3b4  25... c8d8  26. a3a4 [%c_effect a4;square;a4;type;Mistake;persistent;true] A clearly bad decision, since the pawn becomes a target. 26... c5e4 [%c_effect e4;square;e4;type;GreatFind;persistent;true] 27. f2f3 [%c_effect f3;square;f3;type;Mistake;persistent;true] Another inaccurate move. 27... a7a5 [%c_effect a5;square;a5;type;GreatFind;persistent;true]