[Event "ch-USA w 2022"] [Site "https://lichess.org/study/dfRDZs7P/avhd0rMF"] [Date "2022.10.15"] [Round "10.6"] [White "Yu, Jennifer"] [Black "Paikidze, Nazi"] [Result "1/2-1/2"] [WhiteElo "2297"] [BlackElo "2354"] [Annotator "Hansen,Carsten"] [Variant "Standard"] [ECO "A17"] [Opening "English Opening: Anglo-Indian Defense, Nimzo-English"] [Source "https://lichess.org/study/dfRDZs7P/avhd0rMF"] [Orientation "white"] { [%evp 0,110,19,13,30,-9,3,-8,4,-20,16,18,2,15,10,-71,-54,-97,-61,-64,-18,-23, -30,-51,-38,-45,-45,-127,-129,-111,-109,-110,-121,-123,-138,-117,-108,-152,-42, -38,3,0,94,88,88,30,117,66,140,132,145,119,196,270,266,-117,129,129,140,146, 136,131,131,139,141,147,123,132,137,107,105,108,83,77,82,96,74,49,45,7,0,0,-23, -6,-7,-29,-37,0,55,64,1,1,-10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] } 1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 { The main line is } (4. Qc2 { which is also considered White's only real shot at an advantage in this variation. }) 4... c5 5. a3 Ba5 6. e4? { Overly ambitious and bad. The main lines of } (6. g3 { and }) (6. e3 { are better although also fully playable for Black. }) 6... Nc6 7. e5 Ng4 8. Ne4 O-O! 9. Nxc5 Bb6?! { The text move suffices for an advantage but } (9... d6! 10. Nxb7 Bxb7 11. Qxb7 Rc8 { gives Black a massive advantage. Black has already completed her development, while White has been spending a lot of time chasing pawns. }) 10. Nd3 d6 11. c5 dxc5 12. Qc4 { Plugging a hole, hoping to survive. } 12... Nh6 13. Nf4 Bd7 14. Bd3 Nd4 { White is completely busted. } 15. Nxd4 cxd4 16. Be4 Qg5?! (16... Ng4! { would have been even stronger. }) 17. Nd3 Ng4 (17... Rac8!?) 18. h4 Qd8? { Black would have had a decisive advantage after } (18... Qh5 19. Bxb7 Rab8 20. Ba6 Nxe5 { when it frankly looks like everything has gone wrong for White. }) 19. f3 f5?? { Paikidze throws her entire advantage away with this move. However, the idea is the right one, it is just the execution that failed her. With } (19... Rc8 20. Qa2 { and only now } 20... f5! { , Black could have kept the advantage, for instance, } 21. Bxb7 Bb5 22. Bxc8 Bxd3 23. Qxe6+ Kh8 24. Qd7 Nxe5 25. Qxd8 Rxd8 { and Black has a clear advantage in the endgame, despite White being an exchange up. }) 20. Bxb7 Rb8 { Black should have tried } (20... Qb8!? 21. Bxa8 Rc8 22. Qb3 Nxe5 { and Black has chances to make White's life miserable. }) 21. Ba6 Nh6 22. f4?? { Yu was concerned about letting Black play ...f5-f4 and tried to keep Black's rook on f8 and the knight on h6 passive, but instead she weakened the light squares on the kingside. After } (22. a4! f4 23. b3! Rf5 24. Kd1! { , White would have had the much better chances. }) 22... Qe7 23. b4 Qf7? (23... Rbc8!? { could also be considered. }) 24. Bb2 Qg6 25. O-O? { White should have castled the king in the other direction! After } (25. Bxd4 Qxg2 26. O-O-O { , White has the better chances. }) 25... Qg3?? { Logical but bad. After } (25... Rbc8 26. Bxc8 Rxc8 { , Black has decent counterplay against White's king. }) 26. Rf3 Qxh4 27. Bxd4?? { Too greedy. White should have played } (27. a4 { with a decisive advantage, the threat is a4-a5. }) 27... Bxd4+?? (27... Bc6!! { would have given Black the advantage. }) 28. Qxd4 Bc6 29. Rh3 Qg4 30. Qf2 Qg6 31. Rc1 Bd5 32. Rc7 Ng4 33. Qg3 Qe8 34. Nf2?! (34. Qh4!) 34... Qd8 35. Qc3? (35. Rc5 { is much better for White. }) 35... Rf7 36. Rxf7 Kxf7 37. d4?? (37. Nd3 Kg8 38. Nc5) 37... Rb6! 38. Be2 Rc6 { Despite the material deficit Black is now in driver's seat once more, with White having to defend accurately to stay in the game. } 39. Qd2? (39. Qe1 { was necessary. }) 39... Qc8 40. Bxg4? { Now. Black's advantage takes on serious proportions. } (40. Nxg4 fxg4 41. Rg3 h5 42. f5 { was a better attempt at staying in the game. }) 40... fxg4 41. Rg3 h5 42. Nd3 Rc2 43. Qe3 Qc3?? (43... Qd8! { would have put Black on the path to winning the game. }) 44. f5 Qa1+ 45. Kh2 Qf1 46. fxe6+ Kg8 47. Nf4 Rc1 48. Qxc1 Qxc1 49. Nxd5 Qg5 50. e7 Kf7 51. Rc3 Qh4+ 52. Kg1 Qe1+ 53. Kh2 Qh4+ 54. Kg1 Qe1+ 55. Kh2 Qh4+ { With a draw by perpetual check. } 1/2-1/2