1. d2d4  1... d7d5  2. c2c4  2... e7e6  3. b1c3  3... c7c5  4. c4d5  4... e6d5  5. g1f3  5... b8c6  6. d4c5  6... d5d4  7. c3a4  7... f8c5  8. a4c5  8... d8a5  9. c1d2  9... a5c5  10. b2b4  10... c5b6 A solid move, but Black has other interesting choices. 11. d1a4  11... a7a6  12. e2e3  12... d4e3  13. f2e3  13... a8b8  14. b4b5  14... a6b5  15. a4b5  15... b6b5  16. f1b5  16... g8f6 All of this was played quickly, so I suppose both players were still on preparation territory. 17. f3e5 A new move. 17... e8g8 Played after some thought. This is an excellent pawn sacrifice that gives Black good compensation. 18. e5c6 Tan took a long time before playing this move. She was certainly considering whether to take on c6 with the knight or with the bishop. 18... b7c6  19. b5c6  19... c8a6  20. c6f3 A good defensive move. 20... f8e8  21. e1f2  21... b8b2  22. h1d1  22... f6e4  23. f3e4 It's better to capture the knight immediately. 23... e8e4  24. a1b1  24... e4b4  25. b1b2  25... b4b2  26. a2a4 White is a pawn up, but with an active rook and the presence of opposite-colored bishops, Black has an easy draw. 26... f7f5  27. f2e1  27... a6d3  28. a4a5 