| Apr 18, 2026 | Tawankanjana | 1–0 | Arunnuntapanich | Round 8: Tawankanjana, Dhi - Arunnuntapanich, Tinnakrit | Caro-Kann Defense: Gurgenidze System | |
| Apr 18, 2026 | Arunnuntapanich | 0–1 | Kulpruethanon | Round 7: Arunnuntapanich, Tinnakrit - Kulpruethanon, Thanadon | Queen's Gambit Declined: Tartakower Defense, Makogonov Exchange Variation | |
| Apr 17, 2026 | Arunnuntapanich | 1–0 | Suwannaphong | Round 6: Arunnuntapanich, Tinnakrit - Suwannaphong, Surasit | Nimzo-Indian Defense: Kmoch Variation | |
| Apr 17, 2026 | Khumnorkaew | 1–0 | Arunnuntapanich | Round 5: Khumnorkaew, Tupfah - Arunnuntapanich, Tinnakrit | Dutch Defense: Semi-Leningrad Variation | |
| Apr 16, 2026 | Arunnuntapanich | ½–½ | Nattavutthisit | Round 4: Arunnuntapanich, Tinnakrit - Nattavutthisit, Kavin | King's Indian Attack, with e6 | |
| Apr 16, 2026 | Liukasemsarn | 0–1 | Arunnuntapanich | Round 3: Liukasemsarn, Pakornnarong - Arunnuntapanich, Tinnakrit | Modern Defense: Three Pawns Attack | |
| Apr 15, 2026 | Arunnuntapanich | 1–0 | Bunnag | Round 2: Arunnuntapanich, Tinnakrit - Bunnag, Pirat | King's Indian Defense: Petrosian Variation, Normal Defense | |
| Apr 15, 2026 | Sucharit | 0–1 | Arunnuntapanich | Round 1: Sucharit, Phop-phon - Arunnuntapanich, Tinnakrit | King's Indian Attack | |
| Sep 20, 2024 | Mejias Nunez | 1–0 | Arunnuntapanich | 45th FIDE Chess Olympiad | Sicilian Defense: Four Knights Variation | |
| Sep 19, 2024 | Arunnuntapanich | ½–½ | Kanep | 45th FIDE Chess Olympiad | Nimzo-Indian Defense: Sämisch Variation, Keres Variation | |
| Sep 18, 2024 | Elshaafi | 0–1 | Arunnuntapanich | 45th FIDE Chess Olympiad | Sicilian Defense: Four Knights Variation, Exchange Variation | |
| Sep 16, 2024 | Arunnuntapanich | ½–½ | Karacsonyi | 45th FIDE Chess Olympiad | Nimzo-Indian Defense: Kmoch Variation | |
| Sep 14, 2024 | Arunnuntapanich | 1–0 | Marjanovic | 45th FIDE Chess Olympiad | Queen's Gambit Accepted: Old Variation | |
| Sep 13, 2024 | Arunnuntapanich | 1–0 | Kalka | 45th FIDE Chess Olympiad | Queen's Gambit Declined | |
| Sep 12, 2024 | Valderrama Quiceno | 1–0 | Arunnuntapanich | 45th FIDE Chess Olympiad | English Opening: Symmetrical Variation, Four Knights Variation | |
| Feb 26, 2024 | Tinnakrit Arunnuntapanich | 1–0 | Kosaisoonthorn | Round 7: Tinnakrit Arunnuntapanich - Marwin Kosaisoonthorn | Queen's Gambit Declined: Three Knights Variation | |
| Aug 9, 2022 | Chaves Sanchez Gabriel A | ½–½ | Arunnuntapanich Tinnakrit | WCO | Sicilian Defense: Delayed Alapin Variation, with d6 | |
| Aug 8, 2022 | Arunnuntapanich Tinnakrit | 0–1 | Zia Tahsin Tajwar | WCO | Semi-Slav Defense | |
| Aug 7, 2022 | Hadj Kholti Yasser | 0–1 | Arunnuntapanich Tinnakrit | WCO | Sicilian Defense: Najdorf Variation, English Attack | |
| Aug 6, 2022 | Arunnuntapanich Tinnakrit | 1–0 | Gurner Jem | WCO | Modern Defense: Averbakh System | |
| Aug 3, 2022 | Arunnuntapanich Tinnakrit | 1–0 | Alzamil Abdulaziz | WCO | Slav Defense | |
| Aug 2, 2022 | Georgiev Todor | 0–1 | Arunnuntapanich Tinnakrit | WCO | Benoni Defense: Four Pawns Attack, Main Line | |
| Aug 1, 2022 | Kolliemelen Daniel | 0–1 | Arunnuntapanich Tinnakrit | WCO | Canard Opening | |
| Jul 31, 2022 | Arunnuntapanich Tinnakrit | 0–1 | Maerevoet Sim | WCO | Semi-Slav Defense: Normal Variation | |
| Jul 30, 2022 | Croes Octavio | 0–1 | Arunnuntapanich Tinnakrit | WCO | King's Indian Defense: Accelerated Averbakh Variation | |
| Jul 29, 2022 | Shevchenko Kirill | 1–0 | Arunnuntapanich Tinnakrit | WCO | Sicilian Defense: Delayed Alapin Variation | |
