Event: U20 Pan American Chess Championship OPEN 2025
Site: CEMINA Centro Militar Naval y Aeronautico - Asunción
Date: 2025-06-17
White: Ribeiro, Matheus Mendes Domingues
WhiteTitle: FM
WhiteElo: 2294
Black: Huallpa Fernandez, Hector Manuel
BlackElo: 1983
Result: 1-0
ECO: A16
Opening: English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation
Variant: Standard

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. Nf3 g6 5. Qb3 Nb6 6. d4 Bg7 7. Bf4 Be6 8. Qc2 O-O 9. Rd1 Nd5 10. Bg3 Nxc3 11. bxc3 Qd5 12. e4 Qxa2 13. Qc1 Bb3 14. Qb1 b6 15. Bd3 c5 16. O-O Qxb1 17. Rxb1 c4 18. e5 Nc6 19. Be4 Rac8 20. d5 Nb8 21. Nd4 Nd7 22. Nc6 Rfe8 23. Bf3 Ba4 24. Rfe1 Bh6 25. Re2 a5 26. h3 Bb3 27. e6 fxe6 28. dxe6 Nc5 29. Bd5 Na4 30. Be5 Bg7 31. Re3 Bxe5 32. Nxe5 Rf8 33. Nd7 Rf5 34. Be4 Rb5 35. Bb7 Rc7 36. Ba6 Rd5 37. Nf6+ exf6 38. e7 Rxe7 39. Rxe7 Nxc3 40. Bxc4 Nxb1 41. Bxb3 Kf8 42. Re1 Rb5 43. Rxb1 a4 44. Ba2 Rxb1+ 45. Bxb1 b5 46. Bd3 a3 47. Bb1 Ke7 48. Kf1 Kd6 49. Ke2 Ke5 50. Ke3 g5 51. g3 h5 52. f3 h4 53. gxh4 gxh4 54. f4+ Kd5 55. Ba2+ Kc5 56. Kd3 Kb4 57. Kd4 Ka4 58. Kc3 f5 59. Be6 b4+ 60. Kc2 b3+ 61. Bxb3+ Kb4 62. Be6 Kc5 63. Bxf5 Kd4 64. Bg4 1-0