[Event "Grenke Chess Open 2024"] [Site "Karlsruhe, Germany"] [Date "2024.03.31"] [Round "6.4"] [White "Ben Ari, Yannay"] [Black "Yoo, Christopher Woojin"] [Result "0-1"] [WhiteElo "2436"] [BlackElo "2583"] [Annotator "Lang, JJ"] [Variant "Standard"] [ECO "A30"] [Opening "English Opening: Symmetrical Variation"] [Source "https://lichess.org/study/b0uX2KYO/ez7owYnT"] [Orientation "white"] 1. Nf3 c5 2. c4 b6 3. g3 Bb7 4. Bg2 Nf6 5. O-O e6 6. d4 cxd4 7. Qxd4 Be7 8. Nc3 O-O 9. Rd1 Nc6 10. Qf4 Qc8 11. b3 Nh5 12. Qd2 Rd8 13. Bb2 Nf6 14. Rac1 Qb8 15. Nd5! { An energetic thematic piece sac. White is correct to play this for positional domination, rather than to win the material back immediately, but some imprecise follow-ups give Yoo just enough juice to stay in the game. } 15... exd5 16. cxd5 Na5 17. b4?! (17. Nd4! Ne8 (17... Nxd5 18. Nf5 $18) (17... d6 18. Nf5 Bf8 19. Qg5 $18)) 17... Nc6 18. b5 Na5 19. Nh4 Rc8 20. Nf5 Rxc1 21. Nxe7+ Kf8 22. Qxc1 Kxe7 23. d6+ Kf8 24. Bxf6 Bxg2 25. Kxg2?! (25. Qg5! { was the forced win. } 25... gxf6 26. Qxf6 Kg8 (26... Bb7 27. Qh8#) 27. Rd4! { The key point, as Black's light-squared bishop is powerless to stop the infiltration on the dark squares. } 27... h5 28. Qg5+ Kf8 29. Qxh5 { [%cal Gh5h8] }) 25... Qe8 26. Be7+ Kg8 27. Qc7 f6 28. Rc1 h6 { White still has the compensation and the pawn here, and it's just a question of finding the proper way to convert. } 29. Rc3 Kh8 30. h4 h5 31. Rc1 Kg8 32. Kh2 Kh8 33. Kg1 Kg8 34. Kg2 Kh8 35. Qc2 Nb7 36. Qf5 Nc5 37. Rd1 Rc8 38. Rd5 Ne6 39. Qd3 Kg8 40. Qb3 Qg6! { Black has untangled! } 41. Rd4 Kh7 { As is often the case when a player goes from having a strong advantage to having no advantage, the blunders are about to show up. } 42. Ra4?? Nc5 $17 43. Qc4 { was White's idea, but } 43... Nxa4 44. Qxc8 Qe4+ 45. Kg1 Nc5 { ties it together. Black defends the d7-pawn, attacks the e2-pawn, and enjoys the initiative thanks to White's inert bishop. 0 } 46. Qf8 Qb1+ 47. Kg2 Qxa2 48. Qa8 Qxe2 { Now, Black is winning. } 49. Qxa7 Qxb5 50. Qa2 Qb3 51. Qe2 Qd5+ 52. Kg1 Nd3 53. Bxf6 gxf6 54. Qe7+ Kg6 55. Qe8+ Kg7 56. Qxd7+ Qf7 57. Qc7 Ne5 58. Qxb6 Qd5 59. Qc7+ Kg6 60. Qe7 Kf5 61. Qd8 Kg4 62. Qc8+ f5 63. Qc1 Nf3+ 64. Kf1 Kh3 65. Ke2 Nd4+ { 0-1 Black wins. } 0-1