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 