Game |
| Result | Moves |
Year | Event/Locale | Opening |
26. G Hernandez Guerrero vs L Christiansen |
 | 0-1 | 35 | 1988 | Saint John Open I | B16 Caro-Kann, Bronstein-Larsen Variation |
27. G Hernandez Guerrero vs S Semkov |
| 0-1 | 54 | 1988 | Saint John Open I | B44 Sicilian |
28. G Hernandez Guerrero vs R Navarro |
| 1-0 | 36 | 1988 | MEX-ch | D02 Queen's Pawn Game |
29. R Ocampo Vargas vs G Hernandez Guerrero |
| ½-½ | 26 | 1988 | MEX-ch | B22 Sicilian, Alapin |
30. G Basanta vs G Hernandez Guerrero |
| 1-0 | 28 | 1988 | Saint John Open I | B83 Sicilian |
31. G Hernandez Guerrero vs B Lalic |
| ½-½ | 38 | 1988 | Saint John Open I | C07 French, Tarrasch |
32. K Shirazi vs G Hernandez Guerrero |
| 1-0 | 34 | 1988 | Saint John Open I | B30 Sicilian |
33. A Lein vs G Hernandez Guerrero |
| 1-0 | 39 | 1988 | Saint John Open I | D03 Torre Attack (Tartakower Variation) |
34. M Sisniega vs G Hernandez Guerrero |
| 1-0 | 59 | 1988 | MEX-ch | B63 Sicilian, Richter-Rauzer Attack |
35. I Ivanov vs G Hernandez Guerrero |
| ½-½ | 37 | 1988 | Saint John Open I | E77 King's Indian |
36. G Hernandez Guerrero vs P Boutquin |
| 1-0 | 30 | 1988 | Saint John Open I | B74 Sicilian, Dragon, Classical |
37. R E Espinosa Flores vs G Hernandez Guerrero |
| 1-0 | 40 | 1988 | MEX-ch | B22 Sicilian, Alapin |
38. G Hernandez Guerrero vs G Schwartzman |
| ½-½ | 13 | 1988 | Saint John Open II | C42 Petrov Defense |
39. G Hernandez Guerrero vs K S Teo |
| 0-1 | 43 | 1988 | Thessaloniki Olympiad | C07 French, Tarrasch |
40. J Freyre Forest vs G Hernandez Guerrero |
| 0-1 | 49 | 1988 | Thessaloniki Olympiad | B22 Sicilian, Alapin |
41. G Hernandez Guerrero vs O Renet |
| 0-1 | 30 | 1988 | Thessaloniki Olympiad | B44 Sicilian |
42. H T Wagenaar vs G Hernandez Guerrero |
| 0-1 | 29 | 1988 | Thessaloniki Olympiad | A46 Queen's Pawn Game |
43. Fotios Skoularikis vs G Hernandez Guerrero |
| ½-½ | 41 | 1988 | Thessaloniki Olympiad | B58 Sicilian |
44. G Hernandez Guerrero vs R Douven |
| ½-½ | 66 | 1988 | Thessaloniki Olympiad | B18 Caro-Kann, Classical |
45. G Hernandez Guerrero vs J L Fernandez Garcia |
| ½-½ | 62 | 1988 | Thessaloniki Olympiad | B05 Alekhine's Defense, Modern |
46. Blatny vs G Hernandez Guerrero |
| ½-½ | 62 | 1988 | Thessaloniki Olympiad | C43 Petrov, Modern Attack |
47. G Hernandez Guerrero vs I Manor |
| ½-½ | 56 | 1989 | World Junior Championship | B06 Robatsch |
48. J Segovia vs G Hernandez Guerrero |
| 0-1 | 52 | 1989 | World Junior Championship | B22 Sicilian, Alapin |
49. G Hernandez Guerrero vs V Kontic |
| 0-1 | 40 | 1989 | World Junior Championship | C03 French, Tarrasch |
50. G Hernandez Guerrero vs K Ruxton |
| 1-0 | 40 | 1989 | World Junior Championship | B18 Caro-Kann, Classical |