[Event "Round 4: Erick Adrian Calderon Orihuela - Joe Samuel Sandoval Yepez"] [Site "https://lichess.org/study/84EFX9Yo/idCRWEOw"] [White "Erick Adrian Calderon Orihuela"] [Black "Joe Samuel Sandoval Yepez"] [Result "1/2-1/2"] [UTCDate "2022.08.14"] [UTCTime "23:46:19"] [Variant "Standard"] [ECO "B42"] [Opening "Sicilian Defense: Kan Variation, Modern Variation"] [Annotator "https://lichess.org/@/Club_Nikaili"] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Qc7 6. Qe2 b5 7. O-O Bb7 8. a4 b4 9. c3 Nc6 10. Be3 Nf6 11. cxb4 Nxb4 12. Rc1 Qe5 13. Nf3 Qh5 14. Nbd2 Nxd3 15. Qxd3 Be7 16. h3 O-O 17. Nd4 Qg6 18. f3 d5 19. Rc7 dxe4 20. Qb1 Nd5 21. Rxb7 Nxe3 22. g4 Bh4 23. Nf1 Nxf1 24. Qxf1 exf3 25. Qxf3 Rac8 26. Rf1 h5 27. Ne2 hxg4 28. Qxg4 Qxg4+ 29. hxg4 Rc2 30. Nd4 Rc4 31. Nf3 Rxg4+ 32. Kh1 Rxa4 33. Ne5 Bf6 34. Nd7 Rd8 35. Nxf6+ gxf6 36. Rxf6 Rd2 37. Rbxf7 Ra1+ 38. Rf1 Rxf1+ 39. Rxf1 Rxb2 40. Rc1 Rb6 41. Kg2 Kf7 42. Kf3 Kf6 43. Ke4 Rb4+ 44. Kd3 Ke5 45. Rc5+ Kd6 46. Ra5 Rb6 47. Kc4 Rc6+ 48. Kd4 Rb6 49. Rh5 Rb4+ 50. Kc3 Rg4 51. Ra5 Rg3+ 52. Kd2 e5 53. Rxa6+ Kd5 54. Ra5+ Ke4 55. Ra4+ Kf5 56. Ke2 e4 57. Kf2 Rb3 58. Ra8 Rb2+ 59. Ke3 Rb3+ 60. Ke2 Rb4 61. Ke3 Rb3+ 62. Ke2 Kf4 63. Rf8+ Ke5 64. Re8+ Kd4 65. Rd8+ Kc4 66. Rc8+ Kd5 67. Rd8+ Ke6 68. Re8+ Kf5 69. Rf8+ Kg4 70. Rg8+ Kf5 71. Rf8+ Kg6 72. Re8 Rb4 73. Ke3 Kf5 74. Rf8+ Ke5 75. Re8+ Kd5 76. Rd8+ Ke5 77. Re8+ Kd5 78. Rd8+ Ke5 79. Re8+ Kd5 1/2-1/2