Where did my queens go?

From the 2013 Australian Junior Championship comes the following exciting game. It is between Yi Liu (Qld) and Yi Yuan (ACT) and features a middlegame promotion, albeit a very temporary one. But having given up one queen, Liu was then forced to give up a second one, leading to a winning position for Yuan.


Liu,Yi (2182) - Yuan,Yi (2295)
Australian Junior Championships - U/18 University Drive, Varsity Lake (4), 19.01.2013

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Nf3 e5 7. O-O Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Nd3 f5 11. Bd2 Nf6 12. f3 f4 13. c5 g5 14. Rc1 Ng6 15. Nb5 Rf7 16. Ba5 b6 17. cxd6 cxd6 18. Be1 a6 19. Nc3 a5 20. Nb5 g4 21. Rc6 Bf8 22. Qc2 Bb7 23. Bf2 Bxc6 24. dxc6 g3 25. hxg3 Nh5 26. c7 Qg5 27. c8Q Rxc8 28. Qxc8 fxg3 29. Bxb6 Nhf4 30. Nxf4 Nxf4 31. Bc4 Qh6 32. Qg4+ Kh8 33. Qxg3 Rg7 34. Qh2 Rxg2+ 35. Qxg2 Nxg2 36. Kxg2 d5 37. exd5 Qxb6 38. d6 Bxd6 39. Nxd6 Qxd6 40. b3 Kg7 41. a4 h5 42. Kh3 Kf6 43. Rg1 Qd7+ 44. Kg3 Qd4 45. Kg2 h4 46. Rh1 Qd2+ 47. Kh3 Qf2 0-1