1. d2d4  1... d7d5  2. c2c4  2... e7e6  3. b1c3  3... f8b4 Yu decided to surpise her opponent in the opening and, strictly speaking, the outcome was well beyond expectations. 4. d1b3 \"This was already no preparation.\" (Zatonskih) She remembered that four years ago at the Cairns Cup Harika had also opted for 3...Bb4 against her, but that was all... 4... b8c6 Yu also started to think deeply from here onwards, and the result of this strategy of trying to outwit your opponent was serious mutual time-trouble at the end. 5. g1f3  5... a7a5  6. e2e3  6... g8e7  7. c1d2  7... e8g8 [#] 8. a2a3 A logical move, and a novelty. This is a good moment to trade the strong bishop. 8... b4c3  9. d2c3  9... b7b6  10. f1d3  10... c8a6  11. e1g1 For a while, White considered immediate play in the center, but as a strong classical player she decided to finish her development first. 11... a5a4  12. b3a2  12... d5c4  13. d3c4  13... a6b7 Starting a risky approach. Yu allows her opponent to seize the center. 14. e3e4  14... c6a5  15. c4d3  15... e7g6 But then Black quickly counter-attacks it. Now everything will depend on the ability of White to hold on to the strong center. If it collapses, it will be Black who seizes the initiative on the kingside. 16. f1e1  16... g6f4  17. d3c2  17... f7f5 [%c_effect f5;square;f5;type;GreatFind;persistent;true] Time is key here, and this aggression is fully justified. 18. c3d2  18... f5e4  19. c2e4  19... b7d5 Suddenly, the game has opened up and now any mistake might be the last. White hopes that her central control will be enough to repel any counter-attack, whereas Black in turn believes that the opponent's pieces might be a little too far to come to the assistance of the white king. 20. a2b1  20... a5b3 A very logical idea, to get this piece back into the game, but not the best one.... 21. d2f4 