[Event "XXXI Panamerican Youth Chess Festival 2021 - U10 Open"] [Site "Florianópolis, State of Santa Catarina, Brazil"] [Date "2021.09.04"] [Round "5.4"] [White "Alvarez Orellana, Isai Jeremi"] [Black "Calcada, Lucas Galvan"] [Result "1-0"] [WhiteElo "1215"] [BlackElo "1520"] [Variant "Standard"] [TimeControl "-"] [ECO "B27"] [Opening "Sicilian Defense: Hyperaccelerated Dragon"] [Termination "Normal"] [Annotator "lichess.org"] 1. e4 c5 2. Nf3 g6 { B27 Sicilian Defense: Hyperaccelerated Dragon } 3. Nc3 Nc6 4. Bc4 Bg7 5. d3 e6 6. a3?! { (0.00 → -0.59) Inaccuracy. Bf4 was best. } (6. Bf4 d6 7. Nb5 e5 8. Bg5 Nge7 9. Nc3 h6 10. Bxe7 Nxe7) 6... Nge7 7. Bf4 O-O?? { (-0.72 → 0.96) Blunder. d5 was best. } (7... d5 8. Ba2 h6 9. O-O g5 10. Bc1 b6 11. exd5 exd5 12. Re1) 8. Bd6 b6 9. O-O?! { (1.20 → 0.18) Inaccuracy. h4 was best. } (9. h4 h5 10. Qd2 Bb7 11. O-O-O Nd4 12. Nxd4 cxd4 13. Ne2 Rc8 14. Qg5 Re8 15. Ba2 Nc6) 9... Bb7 10. Re1 Re8 11. Nb5 Rc8?? { (-0.43 → 1.31) Blunder. Nc8 was best. } (11... Nc8) 12. Bg3 Rf8?? { (0.77 → 2.97) Blunder. d5 was best. } (12... d5) 13. Nd6 Rb8 14. c3 Na5?! { (3.19 → 4.39) Inaccuracy. Ba8 was best. } (14... Ba8 15. d4) 15. d4?? { (4.39 → 1.30) Blunder. Nxb7 was best. } (15. Nxb7 Rxb7 16. Ba6 Rc7 17. b4 Nac6 18. Bxc7 Qxc7 19. d4 d5 20. e5 c4 21. Bb5 a5) 15... Nxc4 16. Nxc4 Ra8 17. dxc5 bxc5 18. Bd6 Rc8?! { (1.60 → 2.27) Inaccuracy. f5 was best. } (18... f5 19. Nfd2) 19. Qa4 a6? { (2.37 → 4.41) Mistake. f5 was best. } (19... f5 20. Nfe5 Bxe4 21. Rad1 Re8 22. Qxa7 Nd5 23. Qxd7 Qxd7 24. Nxd7 Bc2 25. Rd2 Bb3 26. Na5) 20. Rad1 Re8 21. Bg3?! { (4.55 → 3.56) Inaccuracy. Nfe5 was best. } (21. Nfe5 Nc6) 21... Rf8?? { (3.56 → 7.53) Blunder. Bc6 was best. } (21... Bc6 22. Qxa6 Ra8 23. Qb6 Qxb6 24. Nxb6 Ra7 25. Bd6 Nc8 26. Nxc8 Rxc8 27. Bxc5 Rb7 28. Bb4) 22. Rxd7?! { (7.53 → 4.70) Inaccuracy. Qxd7 was best. } (22. Qxd7 Ba8 23. Qa7 Nd5 24. Qxa6 Rc6 25. Qb5 Qc8 26. exd5 exd5 27. Bd6 Re8 28. Rxe8+ Qxe8) 22... Bc6 23. Rxd8 Bxa4 24. Rxc8? { (4.87 → 2.73) Mistake. Rxf8+ was best. } (24. Rxf8+ Rxf8) 24... Rxc8?? { (2.73 → 7.38) Blunder. Nxc8 was best. } (24... Nxc8 25. Bc7) 25. Nb6 Rd8 26. Nxa4 c4 27. Nb6 Bf8 28. Bh4 Rb8 29. Bxe7 Rxb6 30. Bxf8 Kxf8 31. Re2 Ke7 32. Rd2 f6 33. e5 f5 34. Ng5 h6 35. Nh7 Rb5 36. f4 a5 37. Nf6 Rb7 38. Ng8+ Kf8 39. Nf6 Ke7 40. Kf2 Rc7 41. Rd6 Rb7 42. Rd2 Rc7 43. Ke3 Rb7 44. h3 Ra7 45. g4 Rb7 46. h4 fxg4 47. Nxg4 h5 48. Nf6 Ra7 49. Rd7+ Rxd7 50. Nxd7 Kxd7 51. Kd4 Kc6 52. Kxc4 Kb6 53. b4 a4 54. b5 Ka5 55. b6?! { (Mate in 6 → 17.62) Lost forced checkmate sequence. Kc5 was best. } (55. Kc5 g5 56. hxg5 h4 57. g6 h3 58. g7 h2 59. g8=Q h1=Q 60. Qd8#) 55... Kxb6 56. Kb4 Kc6 57. c4 Kb6 58. Kxa4 Kc5 59. Ka5 Kc6 60. Kb4 Kb6 61. a4 Kc6?! { (19.51 → Mate in 29) Checkmate is now unavoidable. Kc7 was best. } (61... Kc7 62. Kc5) 62. a5 Kb7 63. Kc5 Ka6 64. Kd6?! { (Mate in 12 → 21.26) Lost forced checkmate sequence. Kb4 was best. } (64. Kb4 Kb7 65. Kb5 Kc7 66. a6 Kc8 67. c5 g5 68. fxg5 Kd7 69. a7 Ke8 70. a8=Q+ Kf7) 64... Kxa5?! { (21.26 → Mate in 15) Checkmate is now unavoidable. Kb7 was best. } (64... Kb7 65. c5) 65. c5?! { (Mate in 15 → 74.20) Lost forced checkmate sequence. Kxe6 was best. } (65. Kxe6 Ka6 66. Kd6 Kb6 67. e6 Ka6 68. e7 Ka5 69. e8=Q Kb4 70. Kd5 Kc3 71. Qxg6 Kb3) 65... Kb5 66. c6 Kc4 67. c7 Kd4 68. c8=Q Ke4 69. Qxe6 Kxf4 70. Qxg6 Ke3 71. Qxh5 Ke4 72. e6 Kf4 73. Kd5 Ke3 74. Qe5+ Kd2 75. Qe4 Kc3 76. Qc4+ Kd2 77. Qb3 Ke2 78. Qc3 Kf2 79. Qd3 Kg2 80. Qe3 Kh2 81. Qg5 Kh3 82. Ke4 Kh2 83. Kf3 Kh1 84. Qg2# { White wins by checkmate. } 1-0