The Benko gambit is rarely seen in top events; however Natalija needed a win with black. The usual pressure black has for the sacrificed pawn was tangible during the first 30 something moves, then at move 33 black got it back. Both players then decided to go for the kill with black having a slight upper hand which brought her the victory in the end. This match goes now into tie breaks.
[Event "WWCC2015"][Site "Sochi"][Date "2015.03.27"][Round "23.2"][White "Zhao, Xue (CHN)"][Black "Pogonina, Natalija (RUS)"][Result "0-1"][ECO "A58"] 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bg7 7. g3 O-O 8. Bg2 d6 9. Nf3 Nxa6 10. O-O Qb6 11. Re1 Nc7 12. e4 Nd7 13. a4 Ba6 14. Ra3 Rfb8 15. Qc2 Ne5 16. Nxe5 Bxe5 17. Nd1 e6 18. Bd2 Bd4 19. Bc3 e5 {black applies continuous pressure} 20. Bh3 Ra7 21. Bg4 Rab7 22. Be2 c4 23. Bxd4 Qxd4 24. Ra2 Ne8 25. Nc3 Rb4 26. Rd1 Qb6 27. a5 Qc7 28. Rda1 Nf6 29. Na4 Nd7 30. Nb6 Rb7 31. Ra4 Rxa4 32. Qxa4 Nxb6 33. axb6 Rxb6 {material is now equal again and black has a small advantage} 34. Rc1 Qc5 35. b3 Bb5 36. Qa8+ Kg7 37. bxc4 Ba6 38. Re1 Qb4 39. Kf1 Bxc4 40. Bxc4 Qxc4+ 41. Kg2 Rb1 {both players are going for the win} 42. Qa5 Qd3 43. Kh3 Rb2 44. Qc7 Rxf2 45. Qxd6 Qc3 46. Rb1 Qc8+