1. d2d4  1... d7d5  2. c2c4  2... e7e6  3. g1f3  3... g8f6  4. b1c3  4... d5c4  5. e2e4  5... b7b5 [%c_effect b5;square;b5;type;Interesting;persistent;true] This is an interesting and risky variation that I like to call the \"Argentine Variation,\" as it's often played by many Argentine grandmasters. It was played by Firouzja against Radjabov in the first round of last year's Candidates Tournament. Radjabov is on Lei's team so they certainly did a lot of work on this line. 6. e4e5  6... f6d5  7. c3b5  7... d5b6  8. f1e2  8... b8c6  9. e1g1  9... f8e7  10. c1e3  10... e8g8 The game follows the main line of the variation. 11. b5c3  11... a8b8 This is an important position. 12. b2b3  12... c4b3  13. a2b3  13... c8b7  14. d1b1 The queen frees the path for the f1-rook and also keeps an eye on the kingside. 14... c6b4  15. c3e4  15... h7h6 [%c_effect h6;square;h6;type;GreatFind;persistent;true] A novelty that was played instantly by Lei. It's the first suggestion of the engine. Black avoids a knight jump to g5. 16. a1a7  16... b6d5  17. e3d2  17... b4c6  18. a7a1  18... d5b4  19. d2e3  19... b4d5 A tacit draw offer. 20. e3c1 Ju decides to play for the win. Only now Lei started to think. She is showing excellent opening preparation in the match. 20... b8a8 Black has good compensation for the sacrificed pawn. The reasons are the active pieces, the d5-square, which is firmly occupied by the knight, and the potential counterplay on the queenside. 21. f1d1  21... a8a1  22. b1a1  22... c6b4  23. e4c5 [%c_effect c5;square;c5;type;GreatFind;persistent;true] 23... b7c6  24. c1d2  24... d8b8  25. a1a5  25... f8d8  26. d1c1  26... b8b6  27. a5b6  27... c7b6  28. c5a6  28... c6b7  29. a6c7  29... g7g5 [%c_effect g5;square;g5;type;GreatFind;persistent;true] I love these pawn moves gaining space in the endgame. 30. h2h3  30... d5f4 Concrete play. It's not easy to say goodbye to such a strong knight, but this is done with good reason. 31. d2f4  31... g5f4  32. c7b5  32... b7c6  33. g1f1  33... g8f8  34. c1d1  34... d8a8  35. b5c3  35... b4a2 [%c_effect a2;square;a2;type;GreatFind;persistent;true] This nice move forces the way for Black's rook. 36. c3a2  36... a8a2  37. f3e1  37... a2b2  38. e1d3  38... b2b3  39. d3f4  39... e7a3 Played in order to avoid White's rook from reaching the c-file. 40. d4d5  40... e6d5  41. f4d5  41... a3c5 The pair of bishops and the b-pawn are good compensation for the missing pawn. 42. d5f6  42... b3b2 Threatening ...Bxg2+. 43. f2f4  43... b2b4 [%c_effect b4;square;b4;type;GreatFind;persistent;true] 44. g2g3  44... b4b3 [%c_effect b3;square;b3;type;GreatFind;persistent;true] 45. f6d7  45... c6d7  46. d1d7  46... b3g3 The pawn is regained, and we arrive at an endgame with opposite-colored bishops. The position is drawn, but White can try to press a little. 47. e2g4  47... g3e3  48. f1g2  48... c5e7  49. d7b7  49... f7f6 An interesting moment. This move is a small inaccuracy, although it doesn't spoil anything. But now White could have made a very cunning winning attempt. 50. e5e6  50... h6h5  51. g4f5  51... h5h4  52. f5g4 