[Event "AJEFECH Nac Online 2021 F4 Arena"] [Site "https://lichess.org/fjRi4nks"] [Date "2021.08.27"] [White "eljosebkn17"] [Black "gmroedor"] [Result "1-0"] [UTCDate "2021.08.27"] [UTCTime "02:22:41"] [WhiteElo "2277"] [BlackElo "2401"] [WhiteRatingDiff "+8"] [BlackRatingDiff "-8"] [BlackTitle "CM"] [Variant "Standard"] [TimeControl "180+0"] [ECO "D91"] [Opening "Grünfeld Defense: Three Knights Variation, Petrosian System"] [Termination "Normal"] [Annotator "lichess.org"] 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. Bg5 { D91 Grünfeld Defense: Three Knights Variation, Petrosian System } O-O?! { (0.13 → 0.78) Inaccuracy. Ne4 was best. } (5... Ne4 6. Bf4 Nxc3 7. bxc3 O-O 8. e3 c5 9. cxd5 Qxd5 10. Be2) 6. e3 c5 7. cxd5 Nxd5? { (0.80 → 2.21) Mistake. Nbd7 was best. } (7... Nbd7 8. Qb3 Qa5 9. Be2 cxd4 10. Nxd4 Nc5 11. Qb5 Qxb5 12. Bxb5) 8. Nxd5 Qxd5 9. Bxe7 Re8? { (2.13 → 3.61) Mistake. cxd4 was best. } (9... cxd4) 10. Bxc5 Na6 11. Ba3 Bg4?! { (3.59 → 5.13) Inaccuracy. b5 was best. } (11... b5 12. Be2) 12. Be2 b5 13. O-O b4 14. Bxa6 bxa3 15. bxa3 Qa5 16. Qd3? { (5.48 → 3.46) Mistake. Bc4 was best. } (16. Bc4 Rec8) 16... Bxf3 17. gxf3 Rad8?! { (2.91 → 4.28) Inaccuracy. Qg5+ was best. } (17... Qg5+ 18. Kh1 Qh5 19. Qd1 Rab8 20. Bc4 Rb2 21. f4 Qh3 22. Bd5 Bf6 23. Qf3 Qxf3+ 24. Bxf3) 18. Bb5 Re5 19. a4 Rh5 20. Qe2?? { (4.03 → -1.00) Blunder. f4 was best. } (20. f4) 20... a6 21. Rab1 axb5 22. Rxb5 Rxb5?! { (-0.97 → 0.00) Inaccuracy. Qxa4 was best. } (22... Qxa4 23. Rxh5 gxh5 24. f4 Rd6 25. h3 Qc6 26. Kh2 Rg6 27. Rg1 Qd5 28. a4 Bf6 29. Qc2) 23. axb5 Qxa2?? { (-0.14 → 8.87) Blunder. Rd5 was best. } (23... Rd5 24. Rb1) 24. Qxa2 { Black resigns. } 1-0