[Event "2023 Summer Marathon"] [Site "https://lichess.org/7HNCyyg1"] [Date "2023.08.05"] [White "MarioSchach"] [Black "Mtekzaa"] [Result "1-0"] [UTCDate "2023.08.05"] [UTCTime "11:08:06"] [WhiteElo "1270"] [BlackElo "1941"] [WhiteRatingDiff "+12"] [BlackRatingDiff "-11"] [Variant "Standard"] [TimeControl "60+0"] [ECO "D20"] [Opening "Queen's Gambit Accepted: Old Variation"] [Termination "Normal"] [Annotator "lichess.org"] 1. d4 d5 2. c4 dxc4 3. e3 { D20 Queen's Gambit Accepted: Old Variation } b5?! { (0.32 → 0.95) Inaccuracy. Nf6 was best. } (3... Nf6 4. Nf3 c5 5. Bxc4 e6 6. O-O a6 7. dxc5 Bxc5 8. Qxd8+) 4. a4 c6? { (0.95 → 2.31) Mistake. b4 was best. } (4... b4 5. Qf3 c6 6. Bxc4 e6 7. Nd2 Nf6 8. a5 Be7 9. Ne2) 5. axb5 cxb5?? { (2.17 → 6.15) Blunder. Nf6 was best. } (5... Nf6 6. Bxc4 e6 7. Nf3 Bb7 8. Bd2 Be7 9. O-O O-O 10. Ba5) 6. Be2?? { (6.15 → -0.72) Blunder. Qf3 was best. } (6. Qf3 Nc6 7. Qxc6+ Bd7 8. Qa6 h5 9. Nf3 Rh6 10. Qa2 Rb6) 6... Bb7 7. Nf3 Qc7?? { (-0.96 → 0.69) Blunder. a6 was best. } (7... a6 8. Ne5 Nf6 9. Bf3 Qb6 10. b3 cxb3 11. Ba3 b2 12. Ra2 Nbd7 13. Rxb2 e6 14. Nxd7) 8. O-O e6 9. Ne5? { (0.68 → -0.43) Mistake. b3 was best. } (9. b3) 9... Bd6 10. Bf3?! { (-0.33 → -1.17) Inaccuracy. b3 was best. } (10. b3 Bxe5 11. dxe5 Qxe5 12. Bf3 Nc6 13. Ra2 Nf6 14. Bb2 Qc7 15. bxc4 b4 16. Nd2 a5) 10... Bxf3?? { (-1.17 → 2.73) Blunder. Ne7 was best. } (10... Ne7 11. Nc3 a6 12. Nxb5 axb5 13. Rxa8 Bxe5 14. dxe5 Bxa8 15. Bxa8 Nbc6 16. Bxc6+ Nxc6 17. Bd2) 11. Qxf3 Bxe5 12. Qxa8 Bxh2+ 13. Kh1 Bd6 14. Qf3?? { (2.65 → 0.35) Blunder. Rxa7 was best. } (14. Rxa7 Qd8 15. Kg1 Nf6 16. Qb7 O-O 17. Nd2 Ng4 18. Nf3 b4 19. Bd2 Qf6 20. Qe4 h5) 14... Ne7 15. Kg1?! { (0.52 → -0.21) Inaccuracy. b3 was best. } (15. b3 cxb3) 15... h5? { (-0.21 → 1.09) Mistake. O-O was best. } (15... O-O 16. Nc3) 16. Nc3 a6 17. Ne4 h4 18. Nxd6+ Qxd6 19. Bd2 h3 20. gxh3 Nf5 21. Qf4?? { (1.10 → -1.75) Blunder. Rfd1 was best. } (21. Rfd1 Rh6 22. Kf1 Qh2 23. Ke2 Rxh3 24. Rh1 Qxh1 25. Qxh1 Rxh1 26. Rxh1 Kd7 27. Rh8 Nc6) 21... Qe7?? { (-1.75 → 5.35) Blunder. Qxf4 was best. } (21... Qxf4 22. exf4 Rxh3 23. Bc3 Kd7 24. Kg2 Rh5 25. Rfe1 f6 26. Reb1 Rh4 27. Kf3 Nc6 28. Rxa6) 22. e4 Rxh3?! { (4.36 → 6.03) Inaccuracy. Nd6 was best. } (22... Nd6 23. Bb4 Nc6 24. Rxa6 Qb7 25. Rxc6 Qxc6 26. Bxd6 f6 27. Ra1 Rh5 28. h4 Rh6 29. Bc5) 23. exf5 Rh4? { (5.09 → 9.61) Mistake. e5 was best. } (23... e5 24. Qxe5 Qxe5 25. dxe5 Nc6 26. Kg2 Rd3 27. Bf4 Rd4 28. Be3 Re4 29. Rxa6 Kd7 30. Rd1+) 24. Qg3?! { (9.61 → 5.87) Inaccuracy. Qxb8+ was best. } (24. Qxb8+ Qd8 25. Qxd8+ Kxd8 26. Bg5+ Kc8 27. Bxh4 exf5 28. Rxa6 f6 29. Bg3 b4 30. Rc6+ Kd7) 24... exf5?! { (5.87 → 8.66) Inaccuracy. Rxd4 was best. } (24... Rxd4 25. Qxb8+ Rd8 26. Qf4 e5 27. Qg5 Qxg5+ 28. Bxg5 Rd4 29. f3 f6 30. Be3 c3 31. bxc3) 25. Rfe1?! { (8.66 → 5.28) Inaccuracy. Qxb8+ was best. } (25. Qxb8+ Qd8 26. Qxd8+ Kxd8 27. Bg5+ f6 28. Bxh4 Kc7 29. Bg3+ Kc6 30. Rxa6+ Kd5 31. Rd6+ Ke4) 25... Qxe1+?? { (5.28 → Mate in 12) Checkmate is now unavoidable. Rg4 was best. } (25... Rg4 26. Qxg4 fxg4 27. d5 Kd7 28. Rxe7+ Kxe7 29. Bf4 Nd7 30. Rxa6 Nf6 31. Ra7+ Ke8 32. d6) 26. Bxe1?? { (Mate in 12 → 5.13) Lost forced checkmate sequence. Rxe1+ was best. } (26. Rxe1+ Kd7 27. Qxb8 Rg4+ 28. Kh2 Rh4+ 29. Kg2 Rg4+ 30. Kf3 Re4 31. Bb4 Rxe1 32. Qb7+ Kd8) 26... Kf8?? { (5.13 → Mate in 6) Checkmate is now unavoidable. Rg4 was best. } { Black resigns. } (26... Rg4 27. Qxg4 fxg4 28. d5 Kd7 29. Bd2 Kc7 30. Bf4+ Kc8 31. Re1 c3 32. bxc3 Nd7 33. d6) 1-0