[Event "28/9 a 1/10 ABERTO DO BRASIL COPEL TELECOM SESC CAIOBÁ 2017 R$ 30.000,00 prêmios"] [Site "Salão de Eventos do SESC Caiobá"] [Date "2017.09.29"] [Round "4"] [White "Bueno, Alfeu Junior Varela"] [Black "Orquiza, Olivier"] [Result "1-0"] [WhiteElo "2197"] [BlackElo "1953"] [Variant "Standard"] [TimeControl "-"] [ECO "B12"] [Opening "Caro-Kann Defense: Maróczy Variation"] [Termination "Normal"] [Annotator "lichess.org"] 1. e4 c6 2. d4 d5 3. f3 { B12 Caro-Kann Defense: Maróczy Variation } Nf6 4. Nc3 e6 5. Bg5 Be7 6. Qd2 Nbd7 7. O-O-O?! { (0.34 → -0.33) Inaccuracy. e5 was best. } (7. e5 Ng8 8. Bxe7 Nxe7 9. f4 O-O 10. Nf3 b5 11. a3 Ba6 12. h4 Qb6 13. g4 c5) 7... b5 8. e5 Ng8 9. h4 Qa5 10. Kb1 Bb4 11. Nge2 Nb6 12. b3 h6 13. Bf4 Ba6 14. Qe1 Ne7 15. Bd2 Rb8 16. Nxb5 Bxb5? { (0.83 → 2.42) Mistake. Bxd2 was best. } (16... Bxd2 17. Nd6+ Kd7 18. Qxd2 Qxd2 19. Rxd2 Nec8 20. Nxc8 Rhxc8 21. Nf4 Bxf1 22. Rxf1 Ke7 23. Nd3) 17. Bxb4 Qa6 18. Bxe7?! { (2.17 → 1.19) Inaccuracy. g4 was best. } (18. g4 Nd7 19. Bd6 Rb7 20. f4 Nc8 21. Bb4 Ne7 22. f5 c5 23. Bxc5 Nxc5 24. dxc5 Bxe2) 18... Kxe7 19. Qb4+ Ke8 20. Nc3 Bxf1 21. Rhxf1 Rb7 22. Qc5? { (1.15 → -0.04) Mistake. Rfe1 was best. } (22. Rfe1 Nd7) 22... Nc4?? { (-0.04 → 1.66) Blunder. Nd7 was best. } (22... Nd7) 23. Rfe1 Kd7 24. Ka1 Na3? { (1.79 → 3.58) Mistake. Qa5 was best. } (24... Qa5 25. Qxa5 Nxa5 26. Na4 Ke7 27. Nc5 Rb6 28. Nd3 Rc8 29. Rc1 h5 30. g4 Rh8 31. g5) 25. Na4 Nc4? { (3.31 → 5.56) Mistake. Rb4 was best. } (25... Rb4 26. Qd6+ Ke8 27. Rc1 Rxa4 28. bxa4 Nc4 29. Qc5 Kd7 30. Rb1 Rc8 31. Rb4 Ke8 32. Reb1) 26. Qxc4 Qa5 27. Nc5+ Kc7 28. Nxb7 Kxb7 29. Qc5 Qa6 30. Qe7+ Ka8 31. Qxf7 Qa5 32. Re3 c5 33. Qxe6 cxd4 34. Rxd4 Rd8?! { (13.12 → Mate in 9) Checkmate is now unavoidable. Qc5 was best. } (34... Qc5) 35. Qc6+ Kb8 36. b4? { (Mate in 8 → 9.75) Lost forced checkmate sequence. Rc3 was best. } { Black resigns. } (36. Rc3 a6 37. Ra4 d4 38. Rxa5 dxc3 39. Qb6+ Kc8 40. Rc5+ Kd7 41. Rc7+ Ke8 42. Qg6+ Kf8) 1-0