[Event "FIDE Chesscom Grand Swiss 2021"] [White "Tari,Aryan"] [Black "Yu,Yangyi"] [Site "Riga"] [Round "5.2"] [Annotator "TA"] [Result "1/2-1/2"] [Date "2021.10.31"] [WhiteElo "2646"] [BlackElo "2704"] [PlyCount "138"] 1. e4 {} e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. 0-0 Be7 8. Nbd2 $1 { is currently scoring better than 8.c4.} Nd6 { C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves.} 9. c3 Bf5 10. Bc2 0-0 {White has an edge.} 11. Bb3 {[#]} Ne8 $146 ({Predecessor:} 11... Be6 12. Re1 Bf6 13. Nf1 Ne7 14. Ng3 Ng6 15. Bc2 Re8 16. Nh5 Bg4 17. Rxe8+ Nxe8 { 1/2-1/2 (35) Semmler,R (2364)-Simeonov,L (2312) ICCF email 2018} )12. Re1 Bd6 13. Nf1 Ne7 14. Nh4 {Black must now prevent Rxe7!} Bd7 15. Bc2 c6 16. Ng3 g6 17. Bh6 Ng7 18. Qd2 f6 19. Re3 Qc7 20. Rae1 Rae8 21. Nf3 Nc8 22. Rxe8 (22. Nf1 {keeps more tension.} Rxe3 23. Nxe3 Re8 24. Bd3 Qd8 25. Qc1 )Rxe8 23. Rxe8+ Bxe8 24. Ne2 Bd7 25. h4 Bg4 26. Ne1 Nf5 27. Bxf5 Bxf5 28. Bf4 (28. b3 { is more complex.} Ne7 29. g3 Bc8 30. Bf4 Nf5 31. Bxd6 Qxd6 32. Nf4 )Bxf4 29. Nxf4 Nd6 30. Ned3 Qe7 31. b3 h6 32. f3 g5 33. hxg5 hxg5 34. Ne2 Kg7 35. g4 Bg6 36. Kf2 a5 37. Ng3 Kf7 (37... Kf8 {looks sharper.} 38. Nc5 b6 39. Na4 b5 40. Nc5 Nb7 )38. a4 (38. Nc5 {is interesting.} Ke8 39. Na4 Kd8 40. c4 dxc4 41. Qxa5+ Ke8 42. d5 )Ke8 (38... Qf8 {feels hotter.} 39. Qe2 Qh8 40. Ne1 Ne8 41. Qe3 Qf8 )39. Qe3 b6 40. Qxe7+ Kxe7 $11 { Endgame KBN-KNN} 41. Ke3 Nb7 42. Nf1 c5 43. Nd2 Kd6 44. Ne1 Nd8 45. f4 gxf4+ 46. Kxf4 Ne6+ 47. Ke3 Kc6 48. Nd3 Bh7 49. Nf4 Nxf4 { [#] Overworked Piece} 50. Kxf4 cxd4 51. cxd4 $15 {KB-KN} b5 {And now ...bxa4 would win.} 52. g5 $1 {} fxg5+ 53. Kxg5 Bc2 54. Kf4 $1 bxa4 55. bxa4 Bxa4 56. Nb1 Bc2 57. Na3 Be4 {Threatens to win with ...a4.} 58. Ke3 $1 Kb6 59. Kd2 a4 (59... Bf5 {with more complications.} 60. Kc3 Kb7 61. Nc4 dxc4 62. Kxc4 Be6+ )60. Kc3 Ka5 {[#] aiming for ...Bf5.} 61. Nc4+ dxc4 62. Kxc4 $11 {KB-KP} Bd5+ 63. Kc3 a3 64. Kc2 Ba2 $2 (64... Kb4 $19 65. Kb1 Bh1 )65. d5 $1 {The position is equal.} Kb5 66. d6 {Strongly threatening d7.} Kc6 67. Kc3 Be6 68. Kc2 Kxd6 {( -> ...Ba2)} 69. Kb1 Kc5 {Weighted Error Value: White=0.05/Black=0.05} 1/2-1/2