[Event "FIDE Chesscom Grand Swiss 2021"] [White "Shirov,Alexei"] [Black "Yu,Yangyi"] [Site "Riga"] [Round "10.4"] [Annotator "TA"] [Result "1/2-1/2"] [Date "2021.11.06"] [WhiteElo "2659"] [BlackElo "2704"] [PlyCount "128"] 1. e4 {} c5 2. Nc3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Qd2 Nf6 6. b3 {B23: Closed Sicilian: Lines without g3.} e5 7. Bb2 Be7 8. g3 {[#] White has an edge.} Nd4 $146 ({Predecessor:} 8... 0-0 9. Bg2 Nd4 10. Nge2 Nxe2 11. Qxe2 Bg4 12. Qd3 Rc8 13. 0-0 Qc7 14. a4 Qc5 {1-0 (41) Fedoseev,V (2706)-Najer, E (2667) Sochi 2018} )9. Bg2 b5 10. Nge2 Nxe2 11. Qxe2 b4 12. Nd1 {} a5 13. Ne3 0-0 14. a4 Ba6 15. Qd2 Bb7 16. f3 Qc7 17. 0-0-0 Rfd8 18. Nf5 Rac8 19. Bh3 Bf8 {And now ...d5 would win.} 20. Ne3 Ra8 21. Kb1 g6 22. Rhe1 Bh6 23. Qe2 Ba6 24. Qg2 Bxe3 25. Rxe3 d5 26. Ree1 (26. exd5 Nxd5 27. Ree1 Nc3+ 28. Bxc3 Qxc3 $17 )dxe4 27. f4 Bb7 28. Bxe5 Qe7 29. Kc1 Rxd1+ 30. Rxd1 Nd5 31. Qd2 (31. Qxe4 Nc3 $17 )e3 32. Qd3 Rd8 { [#] Strongly threatening ...e2!} (32... f6 $5 {} 33. Bb2 Rd8 $11 )33. Bg4 f6 34. Bb2 Rd6 (34... Kg7 $11 35. Be2 h5 )35. Bf3 (35. Qc4 $1 $14 )Kg7 $15 36. Bxd5 Rxd5 37. Qe2 {Threatens to win with Rxd5.} Rxd1+ 38. Kxd1 {Threatening Bd4.} Qe4 39. Kc1 Ba6 40. Qd1 (40. Bxf6+ $1 $11 {keeps the balance.} Kg8 41. Qxa6 )Qe7 (40... e2 $6 41. Qd7+ Kf8 42. Qd8+ Kf7 43. Qd7+ (43. Qxf6+ Ke8 $11 )Kg8 44. Qd8+ Kf7 45. Qd7+ (45. Qxf6+ Ke8 $11 )Kg8 46. Qd8+ Kf7 $11 )41. Bd4 (41. Qg1 $1 $15 )e2 $19 42. Qe1 Qe4 43. Bf2 {[#]} Bc8 $1 44. Kd2 (44. Qd2 $17 )Bg4 45. h3 Qd5+ ({Weaker is} 45... Bxh3 46. Qxe2 Qc6 47. Kc1 $11 )46. Ke3 Qe6+ (46... Bf3 $142 {aiming for . ..h5.} 47. c4 Qe4+ 48. Kd2 h5 )47. Kd2 $17 Qd5+ ({Much weaker is} 47... Bxh3 $6 48. Qxe2 Qc6 49. Qe7+ Kh6 50. Bd4 $11 )48. Ke3 $1 Bf5 {( -> ...Qe4+)} 49. Kxe2 Qe4+ 50. Be3 Qxc2+ 51. Qd2 Qxb3 52. g4 Be6 ({Don't play} 52... Qxa4 $6 53. gxf5 gxf5 54. Qd3 $11 )53. Qd6 Qc4+ 54. Kf2 Qa2+ 55. Kg3 Qd5 56. Qe7+ Bf7 57. g5 Qe6 58. gxf6+ Qxf6 ({Better is} 58... Kg8 $1 $15 )59. Qc5 $132 { Black must now prevent Bd4! White puts up resistance. The position is equal.} Qf5 60. Qxf5 gxf5 61. Bb6 Kf6 62. Bxa5 b3 63. Bc3+ Ke6 64. Kh4 h6 {Black had all chances to win. Weighted Error Value: White=0.14/Black=0.14} 1/2-1/2