1. c2c4  1... c7c5  2. b1c3  2... b8c6  3. e2e3  3... g8f6  4. d2d4  4... d7d5  5. g1f3  5... e7e6  6. a2a3 White decides not to resolve the central tension and makes a waiting move. This is the most-played move in this position. 6... a7a6 Black follows the same strategy. 7. d4c5  7... f8c5  8. b2b4 Giving meaning to the pawn on a3. 8... c5e7 It's difficult to say which of the three bishop moves (to e7, d6, or a7) is the most accurate. The move played is the least popular of the three. 9. c1b2  9... e8g8  10. d1c2  10... d8b6 [%c_effect b6;square;b6;type;Mistake;persistent;true] A strange move that allows White to achieve an advantage in different ways. 11. f1e2 Not the most accurate. 11... d5c4  12. e2c4  12... f6g4 [%c_effect g4;square;g4;type;Mistake;persistent;true] Taking the knight to e5 is a typical idea, but here it doesn't reach its final destination and simply gets out of play. 13. c3a4  13... b6c7  14. c4d3  14... f7f5 [%c_effect f5;square;f5;type;Mistake;persistent;true] Another mistake, after which Black's position is strategically hopeless. 15. h2h3  15... g4f6  16. e1g1 Black's position can no longer be saved. Its pawn structure is weakened, and the difference in the development of the pieces is huge. White simply prepares to place the rooks on the c- and d-files, place the knight on c5, and reap the rewards of her advantage. 16... e7d6  17. f1d1  17... c8d7  18. a4c5  18... a8c8  19. a1c1 Simple and efficient play. 19... g8h8  20. c2b3 There are many winning moves. Tan plays safely. 20... c8e8  21. f3g5 [%c_effect g5;square;g5;type;GreatFind;persistent;true] The attack on the e6-pawn forces Black to capture the knight on c5.