1. c2c4  1... e7e5  2. d2d3 With his opening choice, Tan shows a desire to play a simple Sicilian with reversed colors rather than engage in a theoretical battle. 2... f8b4 By the same logic, the Sicilian with the check on b5 has been a headache for Black, so why not try it with reversed colors $2 I promise to stop making these comparisons from now on, otherwise, this analysis may be harder to understand than the movie \"Inception.\" Judging who gets the better of inverted color openings is very difficult in chess. 3. b1d2  3... c7c5 A creative move. Black gains control in the center but seals the bishop's fate on b4. 4. g1f3  4... b8c6  5. g2g3  5... d7d6 A novelty on move five. I love when this happens in high-level games, as it shows everyone that chess is more than over-preparing openings. 6. f1g2  6... g8e7  7. e1g1  7... b4d2 Black has to play this as soon as the pin on the d2-knight is undone. 8. c1d2  8... h7h6 I believe Lei wanted to speed up the Be6-Qd7 plan, and that's why she made this move, avoiding the knight jump on g5. Of course, castling is almost never bad, and in this position, this is no exception. 9. a2a3  9... a7a5  10. b2b4 [%c_effect b4;square;b4;type;Interesting;persistent;true] An interesting pawn sacrifice to speed up the attack on the queenside. 10... a5b4  11. a3b4  11... a8a1  12. d1a1  12... c6b4  13. d2b4  13... c5b4  14. f1b1  14... e7c6 The previous moves were pretty straightforward, but now White has a choice. 15. d3d4 [%c_effect d4;square;d4;type;Inaccuracy;persistent;true] 15... c8f5  16. b1c1 [%c_effect c1;square;c1;type;Inaccuracy;persistent;true] 16... e8g8  17. d4d5  17... c6b8  18. c4c5 [%c_effect c5;square;c5;type;GreatFind;persistent;true] White needs to act quickly. 18... d6c5 [%c_effect c5;square;c5;type;GreatFind;persistent;true] 19. f3e5  19... f7f6 Not the most accurate, according to the machine. The position is very complicated, and it's hard to evaluate if White's compensation for the pawn is enough.