| Jun 18, 2026 | Madhesh Kumar S | 1–0 | Dinesh Rajan M | 360 One Challengers Chess Tournament (Category B) | Nimzo-Larsen Attack: Modern Variation | |
| Jun 17, 2026 | Arul Anandh S P K | ½–½ | Madhesh Kumar S | 360 One Challengers Chess Tournament (Category B) | Philidor Defense: Lion Variation | |
| Jun 16, 2026 | Madhesh Kumar S | 1–0 | Abhishek T M | 360 One Challengers Chess Tournament (Category B) | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Jun 15, 2026 | Shitiz Prasad | 0–1 | Madhesh Kumar S | 360 One Challengers Chess Tournament (Category B) | Sicilian Defense: Classical Variation | |
| Jun 14, 2026 | Madhesh Kumar S | ½–½ | Karan J P | 360 One Challengers Chess Tournament (Category B) | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Jun 13, 2026 | Ramakrishna | 0–1 | Madhesh Kumar S | 360 One Challengers Chess Tournament (Category B) | Nimzo-Indian Defense: Simagin Variation | |
| Jun 12, 2026 | Madhesh Kumar S | ½–½ | Shreyas Ghadi | 360 One Challengers Chess Tournament (Category B) | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Jun 11, 2026 | Mayoogh A N | 0–1 | Madhesh Kumar S | 360 One Challengers Chess Tournament (Category B) | Sicilian Defense: Four Knights Variation, Cobra Variation | |
| Jun 10, 2026 | Madhesh Kumar S | 1–0 | Jayant | 360 One Challengers Chess Tournament (Category B) | Sicilian Defense: Closed, Traditional | |
| Jun 6, 2026 | Levin | 1–0 | Madhesh Kumar S | Round 8: Levin, Guy - Madhesh Kumar S | King's Indian Attack: Spassky Variation | |
| Jun 5, 2026 | Madhesh Kumar S | ½–½ | Aleksandrov | Round 7: Madhesh Kumar S - Aleksandrov, Aleksej | English Opening: Agincourt Defense, Catalan Defense Accepted | |
| Jun 4, 2026 | Savchenko | ½–½ | Madhesh Kumar S | Round 6: Savchenko, Boris - Madhesh Kumar S | Nimzo-Larsen Attack: Indian Variation | |
| May 28, 2026 | Ayush Sharma | 1–0 | Madhesh Kumar S | Round 8: Ayush Sharma - Madhesh Kumar S | King's Indian Defense: Fianchetto Variation | |
| May 27, 2026 | Madhesh Kumar S | ½–½ | Chanda | Round 7: Madhesh Kumar S - Chanda, Sandipan | French Defense: Rubinstein Variation, Blackburne Defense | |
| May 25, 2026 | Aleksandrov | 1–0 | Madhesh Kumar S | Round 4: Aleksandrov, Aleksej - Madhesh Kumar S | King's Indian Defense: Makogonov Variation | |
| May 25, 2026 | Madhesh Kumar S | ½–½ | Audi Ameya | Round 3: Madhesh Kumar S - Audi Ameya | Sicilian Defense: Najdorf Variation | |
| Apr 19, 2026 | Madhesh Kumar S | ½–½ | Pham Tran Gia Phuc | 23rd Bangkok Chess Club Open 2026 | Four Knights Game | |
| Apr 18, 2026 | Raahul V S | 0–1 | Madhesh Kumar S | 23rd Bangkok Chess Club Open 2026 | King's Indian Defense: Normal Variation, Standard Development | |
| Apr 17, 2026 | Madhesh Kumar S | ½–½ | Saydaliev | 23rd Bangkok Chess Club Open 2026 | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Apr 16, 2026 | Zhao | 0–1 | Madhesh Kumar S | 23rd Bangkok Chess Club Open 2026 | King's Indian Defense: Orthodox Variation | |
| Jan 14, 2026 | Madhesh Kumar S | 1–0 | Gomez Sanchez | 41st TN IM Norm closed circuit chess Tournament | Sicilian Defense: O'Kelly Variation, Maróczy Bind | |
| Jan 13, 2026 | Ashwin Sairam | ½–½ | Madhesh Kumar S | 41st TN IM Norm closed circuit chess Tournament | Sicilian Defense: Smith-Morra Gambit Accepted, Classical Formation | |
| Jan 13, 2026 | Madhesh Kumar S | 1–0 | Claverie | 41st TN IM Norm closed circuit chess Tournament | Nimzo-Larsen Attack: Classical Variation | |
| Jan 11, 2026 | Aleksandrov | 1–0 | Madhesh Kumar S | 41st TN IM Norm closed circuit chess Tournament | King's Indian Defense: Makogonov Variation | |
| Jan 11, 2026 | Madhesh Kumar S | 0–1 | Hari Ganesh T | 41st TN IM Norm closed circuit chess Tournament | Nimzo-Indian Defense: Kmoch Variation | |
| Jan 10, 2026 | Pranav K P | 0–1 | Madhesh Kumar S | 41st TN IM Norm closed circuit chess Tournament | Nimzo-Indian Defense: Reshevsky Variation | |
| Jan 10, 2026 | Madhesh Kumar S | ½–½ | Palencia Morales | 41st TN IM Norm closed circuit chess Tournament | Queen's Gambit Accepted: Central Variation, Greco Variation | |
| Jan 9, 2026 | Vaibhav Jayant Raut | 1–0 | Madhesh Kumar S | 41st TN IM Norm closed circuit chess Tournament | English Opening: Neo-Catalan | |
| Jan 9, 2026 | Rahman | ½–½ | Madhesh Kumar S | 41st TN IM Norm closed circuit chess Tournament | King's Indian Defense: Normal Variation | |
| Dec 31, 2025 | Madhesh Kumar S | ½–½ | Arpith S Bijoy | Athens of the East 5th International Grandmaster Open Chess Tournament | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | |
| Dec 30, 2025 | Aarit Kapil | 0–1 | Madhesh Kumar S | Athens of the East 5th International Grandmaster Open Chess Tournament | Queen's Pawn Game: Zukertort Variation | |
| Dec 29, 2025 | Madhesh Kumar S | 0–1 | Prasannaa.s | Athens of the East 5th International Grandmaster Open Chess Tournament | King's Indian Defense: Normal Variation, Standard Development | |
| Dec 28, 2025 | Laxman | ½–½ | Madhesh Kumar S | Athens of the East 5th International Grandmaster Open Chess Tournament | Benko Gambit Declined: Main Line | |
| Dec 27, 2025 | Madhesh Kumar S | ½–½ | Ayaan Garg | Athens of the East 5th International Grandmaster Open Chess Tournament | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | |
| Oct 27, 2025 | Madhesh Kumar S | ½–½ | Podolchenko | Sakthi Group 33rd TN IM Norm Close circuit chess tournament 2025 | Caro-Kann Defense: Two Knights Attack | |
| Oct 26, 2025 | Jai Sankar Subramanian | ½–½ | Madhesh Kumar S | Sakthi Group 33rd TN IM Norm Close circuit chess tournament 2025 | English Opening: King's English Variation, Reversed Closed Sicilian | |
| Oct 25, 2025 | Madhesh Kumar S | ½–½ | Arnav Maheshwari | Sakthi Group 33rd TN IM Norm Close circuit chess tournament 2025 | Queen's Gambit Declined: Cambridge Springs Defense | |
| Oct 24, 2025 | Oblitas | ½–½ | Madhesh Kumar S | Sakthi Group 33rd TN IM Norm Close circuit chess tournament 2025 | Sicilian Defense: Delayed Alapin Variation, with d6 | |
| Oct 24, 2025 | Madhesh Kumar S | 1–0 | Gomez Sanchez | Sakthi Group 33rd TN IM Norm Close circuit chess tournament 2025 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Oct 23, 2025 | Samyak Dharewa | 1–0 | Madhesh Kumar S | Sakthi Group 33rd TN IM Norm Close circuit chess tournament 2025 | Anderssen's Opening | |
| Oct 22, 2025 | Madhesh Kumar S | 1–0 | Sunyuktha C M N | Sakthi Group 33rd TN IM Norm Close circuit chess tournament 2025 | Sicilian Defense: Moscow Variation | |
| Oct 21, 2025 | Palencia Morales | 0–1 | Madhesh Kumar S | Sakthi Group 33rd TN IM Norm Close circuit chess tournament 2025 | Sicilian Defense: Najdorf Variation, English Attack | |
| Oct 10, 2025 | Claverie | 0–1 | Madhesh Kumar S | Sakthi Group 33rd TN IM Norm Close circuit chess tournament 2025 | Sicilian Defense: Moscow Variation | |
| Jun 24, 2025 | Abheek Bhatt | ½–½ | Madhesh Kumar S | Round 9: Abheek Bhatt - Madhesh Kumar S | Ruy Lopez: Morphy Defense, Mackenzie Variation | |
| Jun 24, 2025 | Madhesh Kumar S | 1–0 | Vyom Malhotra | Round 9: Madhesh Kumar S - Vyom Malhotra | Four Knights Game: Gunsberg Variation | |
| Jun 23, 2025 | Madhesh Kumar S | ½–½ | Banik Hrishikesh Kumar | Round 8: Madhesh Kumar S - Banik Hrishikesh Kumar | Italian Game: Classical Variation, Giuoco Pianissimo, with d6 | |
| Jun 23, 2025 | Advik Amit Agrawal | ½–½ | Madhesh Kumar S | Round 8: Advik Amit Agrawal - Madhesh Kumar S | Sicilian Defense: Moscow Variation | |
| Jun 22, 2025 | Fedorov | 1–0 | Madhesh Kumar S | Round 7: Fedorov, Alexei - Madhesh Kumar S | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Jun 22, 2025 | Madhesh Kumar S | 1–0 | Ramanuj Mishra | Round 7: Madhesh Kumar S - Ramanuj Mishra | Caro-Kann Defense: Two Knights Attack | |
| Jun 21, 2025 | Madhesh Kumar S | 1–0 | Vedant Rupeshbhai Varasada | Round 6: Madhesh Kumar S - Vedant Rupeshbhai Varasada | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation | |
| Jun 20, 2025 | Pantsulaia | 1–0 | Madhesh Kumar S | Aurionpro International Grandmaster Chess Tournament 2025 | King's Indian Attack | |
| Jun 20, 2025 | Madhesh Kumar S | 1–0 | Madhvendra Pratap Sharma | Round 5: Madhesh Kumar S - Madhvendra Pratap Sharma | French Defense: Winawer Variation, Eingorn Variation | |
| Jun 19, 2025 | Madhesh Kumar S | 1–0 | Sanikidze | Aurionpro International Grandmasters Chess Tournament 2025 | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Jun 19, 2025 | Nijesh R | ½–½ | Madhesh Kumar S | Round 4: Nijesh R - Madhesh Kumar S | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jun 18, 2025 | Madhesh Kumar S | 1–0 | Advik Reddy Moate | Aurionpro International Grandmasters Chess Tournament 2025 - Juniors | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | |
| Jun 17, 2025 | Shreyas Mishra | 0–1 | Madhesh Kumar S | Round 2: Shreyas Mishra - Madhesh Kumar S | Slav Indian | |
| Jun 16, 2025 | Madhesh Kumar S | 1–0 | Ishaan Bhansali | Round 1: Madhesh Kumar S - Ishaan Bhansali | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Jun 16, 2025 | Aansh Nandan Nerurkar | ½–½ | Madhesh Kumar S | Aurionpro International Grandmasters Chess Tournament 2025 - Juniors | Italian Game: Two Knights Defense, Polerio Defense, Bishop Check Line | |
| Apr 18, 2025 | Madhesh Kumar S | ½–½ | John Veny Akkarakaran | Round 10: Madhesh Kumar S - John Veny Akkarakaran | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Jan 8, 2025 | Karthikeyan | 1–0 | Madhesh Kumar S | 15th Chennai Open GM Event 2024 | English Opening: Anglo-Indian Defense | |
| Jan 6, 2025 | Madhesh Kumar S | 0–1 | Mohamed Anees M | 15th Chennai Open GM Event 2024 | Sicilian Defense: Godiva Variation | |
| Jan 5, 2025 | Madhesh Kumar S | 1–0 | Nguyen | 15th Chennai Open GM Event 2024 | Sicilian Defense: Godiva Variation | |
| Jan 5, 2025 | Sathvik Adiga | ½–½ | Madhesh Kumar S | 15th Chennai Open GM Event 2024 | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Nov 9, 2024 | Reyan Md. | 1–0 | Madhesh Kumar S | National Sub Junior Open and Girls Chess Championship 2024 | Four Knights Game | |
| May 23, 2024 | Nitin | 1–0 | Madhesh Kumar S | Round 9: Nitin, S. - Madhesh Kumar S | King's Indian Attack | |
| May 23, 2024 | Wagh Suyog | 1–0 | Madhesh Kumar S | Round 7: Wagh Suyog - Madhesh Kumar S | Queen's Gambit Declined | |
| Mar 30, 2024 | Madhesh Kumar S | 0–1 | Rathanvel | 6th SHAASTRA Rapid FIDE Rated Chess Tournament 2024 - IIT Madras | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Jan 21, 2024 | Madhesh | 1–0 | Kadav | 1st Bangalore International Grandmasters Open Chess Tournament-2024 (Category 'B') | Sicilian Defense: Dragon Variation, Classical Variation | |
| Jan 21, 2024 | Sushanth | 0–1 | Madhesh | 1st Bangalore International Grandmasters Open Chess Tournament-2024 (Category 'B') | Four Knights Game: Gunsberg Variation | |
| Jan 19, 2024 | Selvamurugan | 1–0 | Madhesh | 1st Bangalore International Grandmasters Open Chess Tournament-2024 (Category 'B') | Four Knights Game: Gunsberg Variation | |
| Jun 20, 2022 | Madhesh Kumar S | 1–0 | Jaganath C | 13th Chennai Open | ? | |
| Jun 20, 2022 | Priyanka | * | Madhesh Kumar S | 13th Chennai Open | ? | |
| Jun 19, 2022 | Stupak | 1–0 | Madhesh Kumar S | 13th Chennai Open | Queen's Gambit Declined | |