| Dec 21, 2025 | Papp | 0–1 | Mahitosh Dey | Forintos Memorial IM | Scotch Game: Göring Gambit, Double Pawn Sacrifice | |
| Dec 20, 2025 | Mahitosh Dey | 0–1 | Nagarkatte Vedant | Forintos Memorial IM | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Dec 19, 2025 | Jakab | ½–½ | Mahitosh Dey | Forintos Memorial IM | Nimzo-Indian Defense: Rubinstein System | |
| Dec 18, 2025 | Mahitosh Dey | ½–½ | Horvath | Forintos Memorial IM | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Dec 17, 2025 | Hemanth Raam | 0–1 | Mahitosh Dey | Forintos Memorial IM | Four Knights Game | |
| Dec 16, 2025 | Mahitosh Dey | 1–0 | Takacs | Forintos Memorial IM | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| Dec 15, 2025 | Fodor | ½–½ | Mahitosh Dey | Forintos Memorial IM | Caro-Kann Defense: Maróczy Variation | |
| Dec 14, 2025 | Mahitosh Dey | 0–1 | Ojas Kulkarni | Forintos Memorial IM | Queen's Gambit Declined: Queen's Knight Variation | |
| Nov 28, 2025 | Mahitosh Dey | 0–1 | Szeberenyi | Forintos Memorial IM | Sicilian Defense: Najdorf Variation, English Attack | |
| Oct 1, 2025 | Mahitosh Dey | ½–½ | Sharnarthi Shlok | Round 11: Mahitosh Dey - Sharnarthi Shlok | King's Indian Defense: Makogonov Variation | |
| Sep 30, 2025 | Audi Ameya | 1–0 | Mahitosh Dey | Round 10: Audi Ameya - Mahitosh Dey | Scotch Game: Potter Variation | |
| Sep 29, 2025 | Mahitosh Dey | ½–½ | Soham Kamotra | Round 9: Mahitosh Dey - Soham Kamotra | Hungarian Opening | |
| Sep 28, 2025 | Agnivo Chakraborty | 0–1 | Mahitosh Dey | Round 8: Agnivo Chakraborty - Mahitosh Dey | Pirc Defense | |
| Sep 27, 2025 | Mahitosh Dey | ½–½ | Joel Paul Ganta | Round 7: Mahitosh Dey - Joel Paul Ganta | Grünfeld Defense: Exchange Variation | |
| Sep 26, 2025 | Rohith Krishna S | ½–½ | Mahitosh Dey | Round 6: Rohith Krishna S - Mahitosh Dey | Queen's Indian Defense: Capablanca Variation | |
| Sep 25, 2025 | Mahitosh Dey | 1–0 | Ramakrishna | Round 5: Mahitosh Dey - Ramakrishna, J. | English Opening: Caro-Kann Defensive System | |
| Jun 26, 2025 | Fus | 1–0 | Mahitosh Dey | Rigó János Memorial GMA | Ruy Lopez: Morphy Defense | |
| Jun 25, 2025 | Mahitosh Dey | 1–0 | Gormally | Rigó János Memorial GMA | Sicilian Defense: Scheveningen Variation, Classical Variation | |
| Jun 25, 2025 | Berczes | 1–0 | Mahitosh Dey | Rigó János Memorial GMA | Bogo-Indian Defense: Retreat Variation | |
| Jun 24, 2025 | Mahitosh Dey | 0–1 | Gschnitzer | Rigó János Memorial GMA | Queen's Gambit Declined | |
| Jun 23, 2025 | Daaevik Wadhawan | 1–0 | Mahitosh Dey | Rigó János Memorial GMA | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jun 23, 2025 | Mahitosh Dey | ½–½ | Ivanisevic | Rigó János Memorial GMA | Benoni Defense | |
| Jun 22, 2025 | Vanczak | 1–0 | Mahitosh Dey | Rigó János Memorial GMA | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Jun 21, 2025 | Mahitosh Dey | 0–1 | Balint | Rigó János Memorial GMA | Indian Defense: Anti-Nimzo-Indian | |
| Jun 20, 2025 | Mahitosh Dey | 1–0 | Nemeth | Rigó János Memorial GMA | Queen's Gambit Declined: Vienna Variation, Quiet Variation | |
| Jun 10, 2025 | Yelisieiev | 1–0 | Mahitosh Dey | Round 5: Yelisieiev, Yevhenii - Mahitosh Dey | Benoni Defense: Fianchetto Variation, Hastings Defense, Main Line | |
| Jun 9, 2025 | Mahitosh Dey | ½–½ | Hess | Round 4: Mahitosh Dey - Hess, Max | Queen's Gambit Declined: Barmen Variation | |
| Jun 8, 2025 | Mahitosh Dey | * | Watzenberger | Round 1: Mahitosh Dey - Watzenberger, Stefan | ? | |
| Jun 8, 2025 | Visakh N R | 1–0 | Mahitosh Dey | Round 2: Visakh N R - Mahitosh Dey | Queen's Gambit Declined: Harrwitz Attack, Main Line | |
| Jun 1, 2025 | Mahitosh Dey | 0–1 | Sivuk | Norway Chess Open 2025 | English Opening | |
| May 31, 2025 | Rozentalis | ½–½ | Mahitosh Dey | Norway Chess Open 2025 | Caro-Kann Defense: Exchange Variation | |
| May 30, 2025 | Mahitosh Dey | ½–½ | Kvaloy | Norway Chess Open 2025 | Queen's Gambit Declined: Barmen Variation | |
| May 30, 2025 | Amar | ½–½ | Mahitosh Dey | Norway Chess Open 2025 | Caro-Kann Defense: Tartakower Variation | |
| May 29, 2025 | Mahitosh Dey | 1–0 | Elsness | Norway Chess Open 2025 | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| May 29, 2025 | Galperin | 1–0 | Mahitosh Dey | Norway Chess Open 2025 | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| May 28, 2025 | Mahitosh Dey | 1–0 | Zhu | Norway Chess Open 2025 | Queen's Indian Defense: Riumin Variation | |
| May 27, 2025 | Mahitosh Dey | 1–0 | Hansen | Norway Chess Open 2025 | Catalan Opening: Open Defense, Classical Line | |
| May 27, 2025 | Zhang | 0–1 | Mahitosh Dey | Norway Chess Open 2025 | Indian Defense: Knights Variation | |
| May 19, 2025 | Mahitosh Dey | 1–0 | Nemeth | SixDays Budapest May 2025 IM B | Queen's Pawn Game: Chandler Gambit | |
| May 18, 2025 | Chekanov | ½–½ | Mahitosh Dey | SixDays Budapest May 2025 IM B | Caro-Kann Defense: Advance Variation, Short Variation | |
| May 17, 2025 | Mahitosh Dey | ½–½ | Szeberenyi | SixDays Budapest May 2025 IM B | Indian Defense: Budapest Defense | |
| May 16, 2025 | Grunberg | 1–0 | Mahitosh Dey | SixDays Budapest May 2025 IM B | English Opening: Neo-Catalan | |
| May 16, 2025 | Mahitosh Dey | 1–0 | Csernyik | SixDays Budapest May 2025 IM B | King's Indian Defense: Makogonov Variation | |
| May 15, 2025 | Felmery | ½–½ | Mahitosh Dey | SixDays Budapest May 2025 IM B | Italian Game: Two Knights Defense, Polerio Defense, Bishop Check Line | |
| May 15, 2025 | Mahitosh Dey | 1–0 | Li | SixDays Budapest May 2025 IM B | Old Indian Defense: Ukrainian Variation | |
| May 14, 2025 | Varga | 0–1 | Mahitosh Dey | SixDays Budapest May 2025 IM B | Ruy Lopez: Exchange Variation, Bronstein Variation | |
| May 12, 2025 | Talukdar | 1–0 | Mahitosh Dey | SixDays Budapest May 2025 IM B | Queen's Pawn Game: Symmetrical Variation | |
| Apr 18, 2025 | Mahitosh Dey | 0–1 | Sanikidze | Round 10: Mahitosh Dey - Sanikidze, Tornike | Sicilian Defense: Scheveningen Variation | |
| Apr 13, 2025 | Mahitosh Dey | 0–1 | Audi Ameya | Round 5: Mahitosh Dey - Audi Ameya | Queen's Pawn Game: Symmetrical Variation | |
| Apr 11, 2025 | Nitish Belurkar | 1–0 | Mahitosh Dey | Round 3: Nitish Belurkar - Mahitosh Dey | Ruy Lopez: Morphy Defense, Arkhangelsk Variation | |
| Mar 23, 2025 | Mahitosh Dey | ½–½ | Wagh Suyog | Round 5: Mahitosh Dey - Wagh Suyog | Caro-Kann Defense: Karpov Variation, Modern Variation | |
| Mar 23, 2025 | Das | ½–½ | Mahitosh Dey | Round 6: Das, Sayantan - Mahitosh Dey | Zukertort Opening: Nimzo-Larsen Variation | |
| Mar 20, 2025 | Mahitosh Dey | ½–½ | Ghosh | Round 3: Mahitosh Dey - Ghosh, Diptayan | Caro-Kann Defense: Tartakower Variation | |
| Dec 31, 2024 | Mahitosh Dey | 0–1 | Schmider | 52nd Rilton Cup | Sicilian Defense: Moscow Variation | |
| Dec 20, 2024 | Mahitosh Dey | 0–1 | Maerevoet | Budapest One Short Week GMA | Sicilian Defense: Löwenthal Variation | |
| Dec 19, 2024 | Berczes | ½–½ | Mahitosh Dey | Budapest One Short Week GMA | English Opening: Neo-Catalan | |
| Dec 18, 2024 | Mahitosh Dey | 0–1 | Sklokin | Budapest One Short Week GMA | Caro-Kann Defense: Tartakower Variation | |
| Dec 18, 2024 | Zverev | * | Mahitosh Dey | Budapest One Short Week GMA | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Dec 17, 2024 | Mahitosh Dey | 1–0 | Lu | Budapest One Short Week GMA | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Dec 17, 2024 | Plat | 1–0 | Mahitosh Dey | Budapest One Short Week GMA | Petrov's Defense: Damiano Variation, Kholmov Gambit | |
| Dec 16, 2024 | Lee | 1–0 | Mahitosh Dey | Budapest One Short Week GMA | Queen's Gambit Declined: Three Knights Variation | |
| Dec 16, 2024 | Paszewski | ½–½ | Mahitosh Dey | Budapest One Short Week GMA | Zukertort Opening | |
| Nov 27, 2024 | Mahitosh Dey | ½–½ | To | SixDays Budapest November 2024 IM A | Italian Game: Classical Variation, Giuoco Pianissimo, with d6 | |
| Nov 26, 2024 | Mahitosh Dey | 1–0 | Kolimar | SixDays Budapest November 2024 IM A | Sicilian Defense: Kan Variation, Wing Attack | |
| Nov 26, 2024 | Otsuka | ½–½ | Mahitosh Dey | SixDays Budapest November 2024 IM A | Zukertort Opening: Nimzo-Larsen Variation | |
| Nov 25, 2024 | Mahitosh Dey | 1–0 | Fodor | SixDays Budapest November 2024 IM A | Sicilian Defense: Löwenthal Variation | |
| Nov 25, 2024 | Nemeth | ½–½ | Mahitosh Dey | SixDays Budapest November 2024 IM A | King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Rare Line | |
| Nov 24, 2024 | Krishna C R G | 1–0 | Mahitosh Dey | SixDays Budapest November 2024 IM A | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Nov 23, 2024 | Mahitosh Dey | 1–0 | Wang | SixDays Budapest November 2024 IM A | Sicilian Defense: Najdorf Variation | |
| Nov 23, 2024 | Semprun Martinez | ½–½ | Mahitosh Dey | SixDays Budapest November 2024 IM A | King's Indian Defense: Makogonov Variation | |
| Nov 22, 2024 | Mahitosh Dey | ½–½ | Horvath | SixDays Budapest November 2024 IM A | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Jul 26, 2024 | February | 1–0 | Mahitosh Dey | XII Torneo Internacional Ciudad de Pontevedra | Four Knights Game: Scotch Variation Accepted | |
| Jul 25, 2024 | Veiga | 1–0 | Mahitosh Dey | XII Torneo Internacionla Ciudad de Pontevedra | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Jun 29, 2024 | Aakash Sharadchandra | ½–½ | Mahitosh Dey | krakow a | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jun 28, 2024 | Mahitosh Dey | 0–1 | Moussard | krakow a | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| Jun 27, 2024 | Kelires | ½–½ | Mahitosh Dey | krakow a | Ruy Lopez: Morphy Defense, Arkhangelsk Variation | |
| Jun 26, 2024 | Mahitosh Dey | ½–½ | Turski | krakow a | Sicilian Defense: Classical Variation | |
| Jun 25, 2024 | Chatalbashev | 0–1 | Mahitosh Dey | krakow a | King's Indian Attack | |
| Jun 24, 2024 | Mahitosh Dey | 1–0 | Alexiadis | krakow a | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| Jun 23, 2024 | Mahitosh Dey | 1–0 | Cieslak | krakow a | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| Jun 23, 2024 | Sieciechowicz | 1–0 | Mahitosh Dey | krakow a | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jun 22, 2024 | Lewtak | ½–½ | Mahitosh Dey | krakow a | Ruy Lopez: Berlin Defense, Improved Steinitz Defense | |
| Apr 16, 2023 | Nandhidhaa | * | Mahitosh Dey | Menorca Open | ? | |
| Apr 15, 2023 | Mahitosh Dey | * | Green | Menorca Open | ? | |
| Apr 15, 2023 | Eggleston | * | Mahitosh Dey | Menorca Open | ? | |
| Apr 14, 2023 | Mahitosh Dey | * | Padmini | Menorca Open | ? | |
| Apr 13, 2023 | Mahitosh Dey | * | Ramoutar | Menorca Open | ? | |
| Apr 13, 2023 | Sandhu | * | Mahitosh Dey | Menorca Open | ? | |
| Apr 12, 2023 | Mahitosh Dey | 1–0 | Hoebarth | Menorca Open | ? | |
| Apr 12, 2023 | Pajeken | ½–½ | Mahitosh Dey | Menorca Open | ? | |
| Apr 11, 2023 | Harsha Bharathakoti | 1–0 | Mahitosh Dey | Menorca Open | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Apr 9, 2023 | Oberoi | 0–1 | Dey | Fagernes Chess International 2023 | Bishop's Opening: Vienna Hybrid | |
| Apr 8, 2023 | Dey | 1–0 | Rasmussen | Fagernes Chess International 2023 | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Apr 7, 2023 | Strand | ½–½ | Dey | Fagernes Chess International 2023 | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Apr 6, 2023 | Dey | 0–1 | Mettenheim | Fagernes Chess International 2023 | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Apr 5, 2023 | Anand | ½–½ | Dey | Fagernes Chess International 2023 | Dutch Defense: Stonewall Variation, Modern Variation | |
| Apr 4, 2023 | Rahman | 1–0 | Dey | Fagernes Chess International 2023 | Queen's Gambit Declined: Harrwitz Attack, Fianchetto Defense | |
| Apr 3, 2023 | Dey | 1–0 | Ji | Fagernes Chess International 2023 | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Apr 2, 2023 | Sorensen | 1–0 | Dey | Fagernes Chess International 2023 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Sep 21, 2022 | Dey Mahitosh | 0–1 | Michal Krasenkow | Round 1: Dey Mahitosh - Michal Krasenkow | London System | |