| Jun 29, 2026 | Arias Diaz | ½–½ | Bruna Poblete | CAMPEONATO NACIONAL ESCOLAR CATEGORIAS IMPARES 2026 | French Defense: Rubinstein Variation, Blackburne Defense | |
| Jun 25, 2026 | Perez Rojas | ½–½ | Arias Diaz | CAMPEONATO NACIONAL ESCOLAR IMPAR 2026 | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Feb 28, 2026 | Arias Diaz | ½–½ | Arias Diaz | Round 11: Arias Diaz, Miguel Angel - Arias Diaz, Javier Alonso | Queen's Gambit Accepted: Classical Defense, Rubinstein Variation | |
| Feb 27, 2026 | Arias Diaz | 1–0 | Donoso Aguirre | Round 10: Arias Diaz, Javier Alonso - Donoso Aguirre, Maximiliano | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Feb 27, 2026 | Gonzalez Culi | ½–½ | Arias Diaz | Round 9: Gonzalez Culi, Diego - Arias Diaz, Javier Alonso | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Feb 26, 2026 | Arias Diaz | ½–½ | Navarro Guerrero | Round 8: Arias Diaz, Javier Alonso - Navarro Guerrero, Simon | Kangaroo Defense | |
| Feb 25, 2026 | Diaz Contreras | ½–½ | Arias Diaz | Round 7: Diaz Contreras, Pedro - Arias Diaz, Javier Alonso | Richter-Veresov Attack | |
| Feb 25, 2026 | Arias Diaz | 1–0 | Vigil | Round 6: Arias Diaz, Javier Alonso - Vigil, Lucas | King's Indian Defense: Averbakh Variation, Benoni Defense, Advance Variation | |
| Feb 24, 2026 | Binimelis Barahona | ½–½ | Arias Diaz | Round 5: Binimelis Barahona, Diego - Arias Diaz, Javier Alonso | French Defense: Advance Variation, Paulsen Attack | |
| Feb 23, 2026 | Bahamondes Ortiz | 1–0 | Arias Diaz | Round 3: Bahamondes Ortiz, Benjamin - Arias Diaz, Javier Alonso | Indian Defense: Dzindzi-Indian Defense | |
| Feb 22, 2026 | Lopez Silva | ½–½ | Arias Diaz | Round 2: Lopez Silva, Hugo - Arias Diaz, Javier Alonso | French Defense: Classical Variation, Steinitz Variation | |
| Feb 8, 2026 | Myers Cumsille | ½–½ | Arias Diaz | Ronda 9: Myers Cumsille, Cash Amaru - Arias Diaz, Javier Alonso | Sicilian Defense: O'Kelly Variation, Venice System | |
| Jan 25, 2026 | Gutierrez Verdugo | 0–1 | Arias Diaz | Round 9: Gutierrez Verdugo, Leonidas - Arias Diaz, Javier Alonso | Caro-Kann Defense: Tartakower Variation | |
| Jan 24, 2026 | Arias Diaz | 0–1 | Marrujo Pardo | Round 8: Arias Diaz, Javier Alonso - Marrujo Pardo, Mauricio Emmanuel | King's Indian Defense: Makogonov Variation | |
| Jan 24, 2026 | Arias Diaz | 1–0 | Figueroa Estay | Round 7: Arias Diaz, Javier Alonso - Figueroa Estay, Mateo Marxav | Bogo-Indian Defense: Retreat Variation | |
| Jan 23, 2026 | Binimelis Barahona | 0–1 | Arias Diaz | Round 6: Binimelis Barahona, Diego - Arias Diaz, Javier Alonso | French Defense: Advance Variation, Milner-Barry Gambit, Main Line | |
| Jan 22, 2026 | Arias Diaz | ½–½ | Medina Castillo | Round 5: Arias Diaz, Javier Alonso - Medina Castillo, Benjamin Ignacio | King's Indian Defense: Makogonov Variation | |
| Jan 22, 2026 | Escobar Castro | ½–½ | Arias Diaz | Round 4: Escobar Castro, Franco Alessandro - Arias Diaz, Javier Alonso | Queen's Gambit Declined | |
| Jan 21, 2026 | Arias Diaz | ½–½ | Jimenez Jimenez | Round 3: Arias Diaz, Javier Alonso - Jimenez Jimenez, Abednego | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jan 14, 2026 | Arias Diaz | 1–0 | Binimelis Barahona | III Itt Temuco 2026 | Benoni Defense: King's Pawn Line | |
| Jan 13, 2026 | Gonzalez Lagos | ½–½ | Arias Diaz | III Itt Temuco 2026 | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Jan 12, 2026 | Arias Diaz | 0–1 | Flores Quillas | III Itt Temuco 2026 | Nimzo-Indian Defense: Normal Variation | |
| Jan 12, 2026 | Jimenez Salas | ½–½ | Arias Diaz | III Itt Temuco 2026 | Caro-Kann Defense: Tartakower Variation | |
| Jan 11, 2026 | Arias Diaz | 1–0 | Lopez Bacian | III Itt Temuco 2026 | Slav Defense: Exchange Variation | |
| Jan 11, 2026 | Valdes Escobar | ½–½ | Arias Diaz | III Itt Temuco 2026 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jan 11, 2026 | Arias Diaz | ½–½ | Soza de la Carrera | III Itt Temuco 2026 | Queen's Pawn Game: Veresov Attack, Dutch System | |
| Dec 11, 2025 | Arias Diaz | ½–½ | Torres Orozco | Round 9: Arias Diaz, Javier Alonso - Torres Orozco, Adrian de Jesus | Benko Gambit Accepted: Modern Variation | |
| Dec 11, 2025 | Peralta Macas | ½–½ | Arias Diaz | Round 8: Peralta Macas, Santiak Emanuel - Arias Diaz, Javier Alonso | French Defense: Chigorin Variation | |
| Dec 10, 2025 | Arias Diaz | 1–0 | Salvatierra Zelada | Round 7: Arias Diaz, Javier Alonso - Salvatierra Zelada, Lucio Alfredo | Nimzo-Indian Defense: Normal Variation, Botvinnik System | |
| Dec 8, 2025 | Cardenas Huachaca | 1–0 | Arias Diaz | Round 4: Cardenas Huachaca, Alessandro Jair - Arias Diaz, Javier Alonso | Queen's Gambit Declined | |
| Dec 8, 2025 | Arias Diaz | 0–1 | Negron Lizarazo | Round 3: Arias Diaz, Javier Alonso - Negron Lizarazo, Juan Sebastian | Queen's Gambit Declined: Queen's Knight Variation | |
| Dec 6, 2025 | Espinoza Torpoco | 0–1 | Arias Diaz | Round 2: Espinoza Torpoco, Sebastian Enrique - Arias Diaz, Javier Alonso | Indian Defense: Anti-Nimzo-Indian | |
| Dec 6, 2025 | Arias Diaz | ½–½ | Munoz Aguilera | Round 1: Arias Diaz, Javier Alonso - Munoz Aguilera, Alan Martin | Semi-Slav Defense: Accelerated Move Order | |
| Nov 8, 2025 | Arias Diaz | 1–0 | Ramirez Camilla | Campeonato Sudamericano Absoluto 2025 | Nimzo-Indian Defense: St. Petersburg Variation | |
| Nov 7, 2025 | Arias Diaz | 0–1 | Quintero Sanchez | Campeonato Sudamericano Absoluto 2025 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Nov 6, 2025 | Arias Diaz | ½–½ | Passmore Bowman | Campeonato Sudamericano Absoluto 2025 | Nimzo-Indian Defense: Rubinstein System | |
| Nov 5, 2025 | Chocair Quilaleo. Abraham Alejandro | * | Arias Diaz | Campeonato Sudamericano Absoluto 2025 | ? | |
| Sep 14, 2025 | Arias Diaz | 1–0 | Izaza | ♟️MASTERS CIUDAD DE VILLA CARLOS PAZ ♟️- 11 AL 14 DE SEPTIEMBRE | Queen's Gambit Declined: Janowski Variation | |
| Sep 13, 2025 | Arias Diaz | ½–½ | Chiarotti | ♟️MASTERS CIUDAD DE VILLA CARLOS PAZ ♟️- 11 AL 14 DE SEPTIEMBRE | Grünfeld Defense: Three Knights Variation | |
| Sep 13, 2025 | Vecchio | ½–½ | Arias Diaz | ??MASTERS CIUDAD DE VILLA CARLOS PAZ ??- 11 AL 14 DE SEPTIEMBRE | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Sep 12, 2025 | Arias Diaz | ½–½ | Sanhueza | ♟️MASTERS CIUDAD DE VILLA CARLOS PAZ ♟️- 11 AL 14 DE SEPTIEMBRE | King's Indian Defense: Makogonov Variation | |
| Sep 12, 2025 | Perez Candelas | 1–0 | Arias Diaz | ♟️MASTERS CIUDAD DE VILLA CARLOS PAZ ♟️- 11 AL 14 DE SEPTIEMBRE | French Defense: Exchange Variation, Monte Carlo Variation | |
| Sep 11, 2025 | Arias Diaz | 1–0 | Lavergne | ♟️MASTERS CIUDAD DE VILLA CARLOS PAZ ♟️- 11 AL 14 DE SEPTIEMBRE | Semi-Slav Defense: Marshall Gambit | |
| Sep 11, 2025 | Ortiz | 0–1 | Arias Diaz | ♟️MASTERS CIUDAD DE VILLA CARLOS PAZ ♟️- 11 AL 14 DE SEPTIEMBRE | Catalan Opening: Closed | |
| Jul 4, 2025 | Arias Diaz | * | Allende Munoz | Sudamericano Escolar Categorias Impares | Indian Defense: West Indian Defense | |
| Jul 3, 2025 | Arias Diaz | 1–0 | Hernandez Olave | Sudamericano Escolar Categorias Impares | Queen's Gambit Declined: Janowski Variation | |
| Jul 2, 2025 | Rueda Rojas | ½–½ | Arias Diaz | Sudamericano Escolar Categorias Impares | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Jul 2, 2025 | Rueda Rojas | * | Arias Diaz | Sudamericano Escolar Categorias Impares | ? | |
| Jul 2, 2025 | Mamani Alvino | 0–1 | Arias Diaz | Sudamericano Escolar Categorias Impares | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Jul 2, 2025 | Arias Diaz | 1–0 | Nandwani Narwani | Sudamericano Escolar Categorias Impares | Queen's Gambit Accepted: Classical Defense, Main Line | |
| Jul 2, 2025 | Arias Diaz | 1–0 | Allende Munoz | Sudamericano Escolar Categorias Impares | King's Indian Defense: Makogonov Variation | |
| Jul 2, 2025 | Ros Rodriguez | 0–1 | Arias Diaz | Sudamericano Escolar Categorias Impares | French Defense: Steinitz Attack | |
| Jul 2, 2025 | Soto Ramirez | ½–½ | Arias Diaz | Sudamericano Escolar Categorias Impares | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Apr 13, 2025 | Arias Diaz | 0–1 | Palma Araya | 10° CHESS BOSS - CHESS TOUR B | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Apr 13, 2025 | Garmendia Vega | 1–0 | Arias Diaz | 10° CHESS BOSS - CHESS TOUR B | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Apr 13, 2025 | Escudero Donoso | 0–1 | Arias Diaz | 10° CHESS BOSS - CHESS TOUR B | French Defense: Classical Variation, Pollock Variation | |
| Apr 12, 2025 | Arias Diaz | ½–½ | Orrego Palermo | 10° CHESS BOSS - CHESS TOUR B | Nimzo-Indian Defense: Rubinstein System, Hübner Variation | |
| Apr 12, 2025 | Arias Diaz | ½–½ | Palma Neira | 10° CHESS BOSS - CHESS TOUR B | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Apr 12, 2025 | Estay Torreblanca | 1–0 | Arias Diaz | 10° CHESS BOSS - CHESS TOUR B | Queen's Pawn Game: London System | |
| Apr 11, 2025 | Arias Diaz | 0–1 | Orellana Canelo | 10° CHESS BOSS - CHESS TOUR B | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Mar 15, 2025 | Myers Cumsille | 1–0 | Arias Diaz | ZONAL 2.5 ABSOLUTO CHILE 2025 | Benoni Defense: Classical Variation | |
| Mar 14, 2025 | Arias Diaz | 0–1 | Munoz Ramos | ZONAL 2.5 ABSOLUTO CHILE 2025 | Queen's Gambit Declined: Janowski Variation | |
| Mar 13, 2025 | Lenoir Ibacache | 0–1 | Arias Diaz | ZONAL 2.5 ABSOLUTO CHILE 2025 | French Defense: Advance Variation, Euwe Variation | |
| Mar 12, 2025 | Arias Diaz | 0–1 | Tokman | ZONAL 2.5 ABSOLUTO CHILE 2025 | Queen's Gambit Declined: Janowski Variation | |
| Mar 12, 2025 | Heinichen R. | ½–½ | Arias Diaz | ZONAL 2.5 ABSOLUTO CHILE 2025 | Caro-Kann Defense: Tartakower Variation | |
| Mar 11, 2025 | Arias Diaz | 1–0 | Munoz Venegas | ZONAL 2.5 ABSOLUTO CHILE 2025 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Mar 10, 2025 | Arias Diaz | ½–½ | Crespo | ZONAL 2.5 ABSOLUTO CHILE 2025 | Nimzo-Indian Defense: Normal Variation, Bernstein Defense | |
| Mar 10, 2025 | Amigo Quintana | 1–0 | Arias Diaz | ZONAL 2.5 ABSOLUTO CHILE 2025 | Queen's Gambit Declined: Janowski Variation | |
| Mar 1, 2025 | Aravena Navarro | 1–0 | Arias Diaz | Final Campeonato de Ajedrez Absoluto de Chile 2025 | French Defense: Classical Variation, Steinitz Variation | |
| Feb 28, 2025 | Arias Diaz | 1–0 | Arevalo Shuttleton | Final Campeonato de Ajedrez Absoluto de Chile 2025 | King's Indian Defense: Makogonov Variation | |
| Feb 27, 2025 | Ramirez Camilla | ½–½ | Arias Diaz | Final Campeonato de Ajedrez Absoluto de Chile 2025 | French Defense: Advance Variation, Euwe Variation | |
| Feb 25, 2025 | Cortez Vilca | ½–½ | Arias Diaz | Final Campeonato de Ajedrez Absoluto de Chile 2025 | Queen's Gambit Declined: Janowski Variation | |
| Feb 24, 2025 | Arias Diaz | 0–1 | Valdes Escobar | Final Campeonato de Ajedrez Absoluto de Chile 2025 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Feb 23, 2025 | Arias Diaz | 0–1 | Perez Gormaz | Final Campeonato de Ajedrez Absoluto de Chile 2025 | Queen's Gambit Accepted: Central Variation, Alekhine System | |
| Jan 25, 2025 | Nava Torrez | ½–½ | Arias Diaz | Nacional Sub 20 Absoluto 2025 | Queen's Pawn Game: Colle System | |
| Jan 24, 2025 | Arias Diaz | ½–½ | Jaque Gutierrez | Nacional Sub 20 Absoluto 2025 | Nimzo-Indian Defense: Rubinstein System, Hübner Variation | |
| Jan 24, 2025 | Rivadeneira Maturana | 0–1 | Arias Diaz | Nacional Sub 20 Absoluto 2025 | French Defense: Advance Variation, Euwe Variation | |
| Jan 23, 2025 | Perez Rojas | ½–½ | Arias Diaz | Nacional Sub 20 Absoluto 2025 | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Jan 22, 2025 | Arias Diaz | 1–0 | Caceres Da Rocha Nina | Nacional Sub 20 Absoluto 2025 | Dutch Defense: Classical Variation, Huisl Variation | |
| Jan 22, 2025 | Marrujo Pardo | 1–0 | Arias Diaz | Nacional Sub 20 Absoluto 2025 | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Jan 21, 2025 | Arias Diaz | 1–0 | Munoz Ramos | Nacional Sub 20 Absoluto 2025 | Queen's Gambit Declined: Charousek Variation | |
| Feb 5, 2025 | Penailillo Correa | ½–½ | Arias Diaz | Ronda 2: Penailillo Correa, Benjamin Isaac - Arias Diaz, Javier Alonso | English Opening: Neo-Catalan | |
| Oct 21, 2024 | Myers Cumsille | ½–½ | Arias Diaz | NACIONAL IND VARONES SUB 14 | Caro-Kann Defense: Tartakower Variation | |
| Oct 20, 2024 | Arias Diaz | 1–0 | Bruna Poblete | NACIONAL IND VARONES SUB 14 | King's Indian Defense: Makogonov Variation | |
| Oct 20, 2024 | Medina Castillo | 1–0 | Arias Diaz | NACIONAL IND VARONES SUB 14 | French Defense: Two Knights Variation | |
| Oct 19, 2024 | Arias Diaz | ½–½ | Munoz Ramos | NACIONAL IND VARONES SUB 14 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Oct 18, 2024 | Arias Diaz | 1–0 | Medel Vega | NACIONAL IND VARONES SUB 14 | Rat Defense: English Rat | |
| Oct 18, 2024 | Contreras Munoz | 0–1 | Arias Diaz | NACIONAL IND VARONES SUB 14 | Caro-Kann Defense: Panov Attack, Modern Defense | |
| Jul 13, 2024 | Arias Diaz | 0–1 | Amigo Quintana | XI OPEN DE AJEDREZ LEBU 2024 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jun 29, 2024 | Arias Diaz | ½–½ | Arias Diaz | Round 9: Arias Diaz, Javier Alonso - Arias Diaz, Miguel Angel | Queen's Gambit Accepted: Furman Variation | |
| Jun 28, 2024 | Amigo Quintana | 1–0 | Arias Diaz | Round 8: Amigo Quintana, Antu - Arias Diaz, Javier Alonso | Queen's Gambit Declined | |
| Jun 28, 2024 | Arias Diaz | 1–0 | Pizarro Yere | Round 7: Arias Diaz, Javier Alonso - Pizarro Yere, Maximilano | Nimzo-Indian Defense: Rubinstein System, Hübner Variation | |
| Jun 27, 2024 | Ramirez Sanchez | 0–1 | Arias Diaz | Round 6: Ramirez Sanchez, Vicente - Arias Diaz, Javier Alonso | French Defense: Advance Variation, Euwe Variation | |
| Jun 26, 2024 | Arias Diaz | ½–½ | Max Alonso Hassler Medina | Round 5: Arias Diaz, Javier Alonso - Max Alonso Hassler Medina | Benoni Defense: King's Pawn Line | |
| Jun 26, 2024 | Castellanos Villela | 1–0 | Arias Diaz | Round 4: Castellanos Villela, Alejandro - Arias Diaz, Javier Alonso | Catalan Opening: Open Defense, Classical Line | |
| Jun 25, 2024 | Arias Diaz | ½–½ | Chiappero | Round 3: Arias Diaz, Javier Alonso - Chiappero, Julio Alfredo | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 22, 2024 | Arias Diaz | 0–1 | Munoz Ramos | Round 9: Arias Diaz, Javier Alonso - Munoz Ramos, Christopher | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 18, 2024 | Lopez Vivanco | ½–½ | Arias Diaz | Round 2: Lopez Vivanco, Gregorio - Arias Diaz, Javier Alonso | French Defense: Tarrasch Variation, Morozevich Variation | |
| Dec 8, 2024 | Areco Alvarenga | ½–½ | Arias Diaz | Round 9: Areco Alvarenga, Eric Adriel - Arias Diaz, Javier Alonso | French Defense: Exchange Variation | |
| Dec 7, 2024 | Arias Diaz | 1–0 | Monteiro | Round 8: Arias Diaz, Javier Alonso - Monteiro, Samuel Ramazzotte | Queen's Gambit Declined: Exchange Variation, Positional Variation | |