[Event "UNIOR CHESS CUP 2021"] [Site "https://lichess.org/6YRa63xN"] [Date "2021.08.21"] [White "kusdnarr"] [Black "gusnawan_21"] [Result "0-1"] [UTCDate "2021.08.21"] [UTCTime "02:00:01"] [WhiteElo "1500"] [BlackElo "2090"] [WhiteRatingDiff "-44"] [BlackRatingDiff "+7"] [Variant "Standard"] [TimeControl "300+0"] [ECO "A04"] [Opening "Zukertort Opening: Slav Invitation"] [Termination "Normal"] [Annotator "lichess.org"] 1. Nf3 c6 { A04 Zukertort Opening: Slav Invitation } 2. Nc3 d5 3. d3?! { (0.28 → -0.31) Inaccuracy. e4 was best. } (3. e4 Bg4 4. d4 e6 5. Be2 Nd7 6. O-O dxe4 7. Nxe4 Ngf6) 3... Nf6 4. g3 g6?! { (-0.60 → 0.22) Inaccuracy. e5 was best. } (4... e5 5. Bg2 Bd6 6. O-O O-O 7. e4 d4 8. Ne2 c5 9. h3) 5. Bg2 Bg7 6. O-O O-O 7. Bd2 Bg4 8. Rb1 Nbd7 9. e4?? { (0.01 → -4.57) Blunder. h3 was best. } (9. h3 Bxf3 10. Bxf3 e5 11. e4 d4 12. Ne2 a5 13. c3 c5 14. c4 a4 15. b4 axb3) 9... dxe4 10. dxe4 Ne5 11. Qe2?! { (-4.52 → -7.05) Inaccuracy. Nxe5 was best. } (11. Nxe5) 11... Bxf3 12. Bxf3 Qxd2 13. Qxd2 Nxf3+ 14. Kg2 Nxd2 15. Rfd1 Nxb1 16. Rxb1 Rfd8 17. b3 h5 18. a4 Rd2 19. Rc1 Rxf2+ 20. Kg1 Ng4 21. h3 Bxc3 22. hxg4 Bd4 23. Kh1 hxg4 24. c3 Be3 25. Re1 Bb6 26. b4?! { (-17.38 → Mate in 8) Checkmate is now unavoidable. a5 was best. } (26. a5 Bxa5 27. b4 Bb6 28. c4 Rb2 29. c5 Bc7 30. Rg1 Kg7 31. Rg2 Rb1+ 32. Rg1 Rxb4) 26... Kg7 27. a5 Bc7?! { (Mate in 23 → -17.43) Lost forced checkmate sequence. Rh8+ was best. } (27... Rh8+ 28. Kg1 Rfh2+ 29. axb6 Rh1+ 30. Kf2 R8h2+ 31. Ke3 Rxe1+ 32. Kd3 axb6 33. b5 Rg2 34. bxc6) 28. Kg1 Bxg3 29. Re3 Bh4 30. e5 Rd8 31. Re1 Rdd2 32. Rf1 Rg2+ 33. Kh1 Rh2+ 34. Kg1 Rdg2# { Black wins by checkmate. } 0-1