1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g2g3  3... d7d5  4. g1f3  4... h7h6 A mysterious move that seeks a slightly different piece development than what we normally see against the Catalan Opening. 5. f1g2  5... f8d6 The bishop is developed on this unusual square, without Black needing to worry about the move Bc1-g5, if I understood correctly the idea of the move h7-h6. 6. b1c3  6... b8c6 Another curious move, since Black normally doesn't like to place the knight in front of the c-pawn in queen's pawn structures. The main idea here is to exchange on c4 and then play e6-e5, when Black's development starts to make sense. 7. e1g1  7... e8g8  8. c3b5 [%c_effect b5;square;b5;type;Inaccuracy;persistent;true] A rare and not very good move. 8.b3 is more common. 8... d5c4  9. d1c2  9... a7a6 The best way to achieve a good position. 10. b5d6  10... c7d6  11. c2c4  11... c8d7 Although White has the pair of bishops, Black's position is pleasant, with easy development and good control of the central squares. 12. c1d2 A new move. 12... c6e7 [%c_effect e7;square;e7;type;GreatFind;persistent;true] An excellent move, freeing the c6-square for the bishop. 13. a2a4  13... d7c6  14. c4d3  14... c6e4  15. d3a3  15... d8d7  16. d2b4  16... e7f5  17. f1d1  17... f8d8  18. a1c1  18... a8c8  19. b4c3  19... b7b5  20. a4b5  20... d7b5 [%c_effect b5;square;b5;type;Inaccuracy;persistent;true] This is a positional mistake, as this is not the pawn formation that Black is looking for. 21. g2f1 [%c_effect f1;square;f1;type;GreatFind;persistent;true] White prepares Nd2 followed by e3 or f3-e4. The a6-pawn becomes a target. 21... b5d7 [%c_effect d7;square;d7;type;Mistake;persistent;true] 22. f3d2 [%c_effect d2;square;d2;type;GreatFind;persistent;true] 22... e4b7  23. c3a5  23... c8c1  24. d1c1 