1. d2d4  1... g8f6  2. g1f3  2... d7d5  3. c2c4  3... e7e6  4. g2g3  4... f8e7  5. f1g2  5... e8g8  6. e1g1  6... d5c4  7. d1c2  7... a7a6  8. a2a4  8... c8d7  9. c2c4  9... d7c6  10. c1g5  10... b8d7  11. b1c3  11... h7h6 This is one of the main lines of the Catalan Opening. The next move is a small surprise, as it is much less common than taking the knight on f6. 12. g5f4  12... e7d6  13. c4d3 Played only once, in a correspondence game. 13... d6f4  14. g3f4  14... a6a5 A novelty. Fixing the pawn structure this way is typical in the Catalan. Black has many alternatives: 15. g1h1  15... c6f3 [%c_effect f3;square;f3;type;Inaccuracy;persistent;true] I don't think this capture is necessary. 16. g2f3  16... c7c6 With a good pawn structure and the g-file ready to be used, it's clear that White's position is more pleasant. 17. f1g1  17... g8h8  18. e2e4 [%c_effect e4;square;e4;type;GreatFind;persistent;true] 18... d8e7  19. g1g3  19... a8d8  20. a1g1 