| Jan 14, 2026 | Harshad S | 0–1 | Jaiveer Mahendru | 42nd Tamil Nadu IM Norm Closed Circuit Chess Tournament - Chennai | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Jan 13, 2026 | Elgabry | 0–1 | Harshad S | 42nd Tamil Nadu IM Norm Closed Circuit Chess Tournament - Chennai | Nimzo-Larsen Attack: Classical Variation | |
| Jan 12, 2026 | Harshad S | ½–½ | Sri Sai Baswanth P | 42nd Tamil Nadu IM Norm Closed Circuit Chess Tournament - Chennai | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jan 11, 2026 | Gochelashvili | 0–1 | Harshad S | 42nd Tamil Nadu IM Norm Closed Circuit Chess Tournament - Chennai | Sicilian Defense: Moscow Variation, Main Line | |
| Jan 11, 2026 | Harshad S | 1–0 | Manik | 42nd Tamil Nadu IM Norm Closed Circuit Chess Tournament - Chennai | Sicilian Defense: Nimzowitsch Variation, Advance Variation | |
| Jan 10, 2026 | Dinesh Rajan M | 0–1 | Harshad S | 42nd Tamil Nadu IM Norm Closed Circuit Chess Tournament - Chennai | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Jan 10, 2026 | Harshad S | 1–0 | Burmakin | 42nd Sakthi Group TN IM Norm Closed Circuit Chess Tournament | Scandinavian Defense: Gubinsky-Melts Defense | |
| Jan 9, 2026 | Jaidambareesh N R | ½–½ | Harshad S | 42nd Sakthi Group TN IM Norm Closed Circuit Chess Tournament | Catalan Opening: Open Defense, Classical Line | |
| Jan 9, 2026 | Hemanth Raam | ½–½ | Harshad S | 42nd Tamil Nadu IM Norm Closed Circuit Chess Tournament - Chennai | Sicilian Defense: Moscow Variation, Main Line | |
| Sep 5, 2024 | Gochelashvili | 0–1 | Harshad S | 26th Tamil Nadu IM Norm Closed Circuit Chess Tournament | Sicilian Defense: Nimzowitsch Variation | |
| Sep 4, 2024 | Harshad S | 1–0 | Manik | 26th Tamil Nadu IM Norm Closed Circuit Chess Tournament | Sicilian Defense: Richter-Rauzer Variation | |
| Sep 3, 2024 | Rohit S | ½–½ | Harshad S | 26th Tamil Nadu IM Norm Closed Circuit Chess Tournament | Ruy Lopez: Berlin Defense | |
| Sep 2, 2024 | Harshad S | ½–½ | Lokesh | 26th Tamil Nadu IM Norm Closed Circuit Chess Tournament | Petrov's Defense: Millennium Attack | |
| Sep 2, 2024 | Pawar | 1–0 | Harshad S | 26th Tamil Nadu IM Norm Closed Circuit Chess Tournament | Sicilian Defense: Closed | |
| Sep 1, 2024 | Harshad S | ½–½ | Vahidov | 26th Tamil Nadu IM Norm Closed Circuit Chess Tournament | French Defense: Advance Variation, Main Line | |
| Aug 31, 2024 | Harshad S | 1–0 | Annageldyev | 26th Tamil Nadu IM Norm Closed Circuit Chess Tournament | Ruy Lopez: Closed, Chigorin Defense | |
| Aug 31, 2024 | Borgaonkar Akshay | ½–½ | Harshad S | 26th Tamil Nadu IM Norm Closed Circuit Chess Tournament | Ruy Lopez: Berlin Defense, Rio Gambit Accepted | |
| Aug 30, 2024 | Daakshin Arun | ½–½ | Harshad S | 26th Tamil Nadu IM Norm Closed Circuit Chess Tournament | Nimzo-Indian Defense: Normal Variation, Botvinnik System | |
| Aug 28, 2024 | Harshad S | 0–1 | Sriram Adarsh Uppala | 25th Tamil Nadu IM Norm Closed Circuit Chess Tournament 2024-Chennai | Caro-Kann Defense: Advance Variation | |
| Aug 27, 2024 | Jaiveer Mahendru | ½–½ | Harshad S | 25th Tamil Nadu IM Norm Closed Circuit Chess Tournament 2024-Chennai | Caro-Kann Defense: Maróczy Variation | |
| Aug 26, 2024 | Harshad S | ½–½ | Gochelashvili | 25th Tamil Nadu IM Norm Closed Circuit Chess Tournament 2024-Chennai | Ruy Lopez: Morphy Defense, Modern Steinitz Defense | |
| Aug 26, 2024 | Manik | ½–½ | Harshad S | 25th Tamil Nadu IM Norm Closed Circuit Chess Tournament 2024-Chennai | Ruy Lopez: Open Berlin Defense, l'Hermet Variation | |
| Aug 25, 2024 | Annageldyev | ½–½ | Harshad S | 25th Tamil Nadu IM Norm Closed Circuit Chess Tournament 2024-Chennai | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Aug 24, 2024 | Harshad S | ½–½ | Adharsh K | 25th Tamil Nadu IM Norm Closed Circuit Chess Tournament 2024-Chennai | Sicilian Defense: Richter-Rauzer Variation | |
| Aug 23, 2024 | Harshad S | ½–½ | Slizhevsky | 25th Tamil Nadu IM Norm Closed Circuit Chess Tournament 2024-Chennai | Sicilian Defense: Najdorf Variation, English Attack | |
| Aug 23, 2024 | Uuriintuya | ½–½ | Harshad S | 25th Tamil Nadu IM Norm Closed Circuit Chess Tournament 2024-Chennai | Ruy Lopez: Berlin Defense, Rio Gambit Accepted | |
| Aug 22, 2024 | Daakshin Arun | ½–½ | Harshad S | 25th Tamil Nadu IM Norm Closed Circuit Chess Tournament 2024-Chennai | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Aug 12, 2024 | Annageldyev | 0–1 | Harshad S | 23rd TN IM Norm Closed Circuit Chess Tournament | Sicilian Defense: Alapin Variation, Barmen Defense | |
| Aug 11, 2024 | Harshad S | 1–0 | Tejaswini G | 23rd TN IM Norm Closed Circuit Chess Tournament | Sicilian Defense: Richter-Rauzer Variation | |
| Aug 10, 2024 | Harshad S | 1–0 | Daaevik Wadhawan | 23rd TN IM Norm Closed Circuit Chess Tournament | Caro-Kann Defense: Advance Variation | |
| Aug 9, 2024 | Harshad S | 1–0 | Gochelashvili | 23rd TN IM Norm Closed Circuit Chess Tournament | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Aug 9, 2024 | Slizhevsky | ½–½ | Harshad S | 23rd TN IM Norm Closed Circuit Chess Tournament | Ruy Lopez: Berlin Defense, Rio Gambit Accepted | |
| Aug 8, 2024 | Aakash G | ½–½ | Harshad S | 23rd TN IM Norm Closed Circuit Chess Tournament | Nimzo-Indian Defense: Kmoch Variation | |
| Aug 7, 2024 | Harshad S | ½–½ | Manik | 23rd TN IM Norm Closed Circuit Chess Tournament | Sicilian Defense: Dragon Variation | |
| Aug 7, 2024 | Sai Vishwesh.C | 0–1 | Harshad S | 23rd TN IM Norm Closed Circuit Chess Tournament | English Opening: Agincourt Defense | |
| Aug 6, 2024 | Harshad S | 1–0 | Uuriintuya | 23rd TN IM Norm Closed Circuit Chess Tournament | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Aug 4, 2024 | Manik | ½–½ | Harshad S | 22nd Tamilnadu IM Norm Closed Circuit Chess Tournament | Ruy Lopez: Open Berlin Defense, l'Hermet Variation | |
| Aug 3, 2024 | Harshad S | ½–½ | Nagarkatte Vedant | 22nd Tamilnadu IM Norm Closed Circuit Chess Tournament | Four Knights Game: Scotch Variation Accepted | |
| Aug 2, 2024 | Harshad S | ½–½ | Daaevik Wadhawan | 22nd Tamilnadu IM Norm Closed Circuit Chess Tournament | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Aug 1, 2024 | Harshad S | 1–0 | Aakash G | 22nd Tamilnadu IM Norm Closed Circuit Chess Tournament | Sicilian Defense: Najdorf Variation, English Attack | |
| Aug 1, 2024 | Annageldyev | 0–1 | Harshad S | 22nd Tamilnadu IM Norm Closed Circuit Chess Tournament | Queen's Pawn Game: Symmetrical Variation | |
| Jul 31, 2024 | Slizhevsky | ½–½ | Harshad S | 22nd Tamilnadu IM Norm Closed Circuit Chess Tournament | Ruy Lopez: Berlin Defense, Rio Gambit Accepted | |
| Jul 30, 2024 | Harshad S | 1–0 | Nandish V S | 22nd Tamilnadu IM Norm Closed Circuit Chess Tournament | Sicilian Defense: Richter-Rauzer Variation | |
| Jul 30, 2024 | Adireddy Arjun | ½–½ | Harshad S | 22nd Tamilnadu IM Norm Closed Circuit Chess Tournament | Ruy Lopez: Berlin Defense, Rio Gambit Accepted | |
| Jul 29, 2024 | Harshad S | 1–0 | Uuriintuya | 22nd Tamilnadu IM Norm Closed Circuit Chess Tournament | Sicilian Defense: Taimanov Variation | |
| Jun 13, 2024 | Harshad S | 1–0 | Halynyazov | FIDE World Junior Chess Championship 2024 Open | French Defense: Advance Variation, Main Line | |
| Jun 12, 2024 | Avila Pavas | 1–0 | Harshad S | FIDE World Junior Chess Championship 2024 Open | Italian Game: Giuoco Pianissimo, Normal | |
| Jun 11, 2024 | Harshad S | 1–0 | Dishank Sachin Bajaj | FIDE World Junior Chess Championship 2024 Open | Ruy Lopez: Closed, Martinez Variation | |
| Jun 10, 2024 | Jai Sankar Subramanian | 0–1 | Harshad S | FIDE World Junior Chess Championship 2024 Open | Sicilian Defense: Kupreichik Variation | |
| Jun 9, 2024 | Harshad S | ½–½ | Jihan Tejas Shah | FIDE World Junior Chess Championship 2024 Open | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Jun 7, 2024 | Borkhetariya Devarsh M | ½–½ | Harshad S | FIDE World Junior Chess Championship 2024 Open | Sicilian Defense: Richter-Rauzer Variation, Modern Variation | |
| Jun 6, 2024 | Harshad S | 0–1 | Gharibyan | FIDE World Junior Chess Championship 2024 Open | Four Knights Game | |
| Jun 5, 2024 | Srihari L R | ½–½ | Harshad S | FIDE World Junior Chess Championship 2024 Open | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Jun 4, 2024 | Harshad S | ½–½ | Ohanyan | FIDE World Junior Chess Championship 2024 Open | Four Knights Game | |
| Jun 3, 2024 | Samant Aditya S | ½–½ | Harshad S | FIDE World Junior Chess Championship 2024 Open | Ruy Lopez: Berlin Defense | |
| Mar 30, 2024 | Harshad S | 0–1 | Akash G | 6th SHAASTRA Rapid FIDE Rated Chess Tournament 2024 - IIT Madras | Sicilian Defense | |
| Mar 30, 2024 | Harshad S | ½–½ | Ravi | 6th SHAASTRA Rapid FIDE Rated Chess Tournament 2024 - Chennai, India | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | |
| Oct 28, 2023 | Harshad | 1–0 | Allahverdiyeva | 2nd Tamil Nadu IM Norm Closed Circuit Chess Tournament 2023 | Sicilian Defense: Delayed Alapin Variation | |
| Oct 27, 2023 | Srihari | ½–½ | Harshad | 2nd Tamil Nadu IM Norm Closed Circuit Chess Tournament 2023 | Four Knights Game: Glek System | |
| Oct 26, 2023 | Harshad | 0–1 | Gochelashvili | 2nd Tamil Nadu IM Norm Closed Circuit Chess Tournament 2023 | Italian Game: Giuoco Pianissimo, Normal | |
| Oct 26, 2023 | Abdyzhapar | ½–½ | Harshad | 2nd Tamil Nadu IM Norm Closed Circuit Chess Tournament 2023 | Rapport-Jobava System | |
| Oct 25, 2023 | Harshad | 1–0 | Ziatdinov | 2nd Tamil Nadu IM Norm Closed Circuit Chess Tournament 2023 | Sicilian Defense: Richter-Rauzer Variation, Classical Variation | |
| Oct 24, 2023 | Harshad | ½–½ | Sekar | 2nd Tamil Nadu IM Norm Closed Circuit Chess Tournament 2023 | Sicilian Defense: Najdorf Variation, Zagreb Variation | |
| Oct 24, 2023 | Senthil | 1–0 | Harshad | 2nd Tamil Nadu IM Norm Closed Circuit Chess Tournament 2023 | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Oct 23, 2023 | Harshad | 1–0 | Srija | 2nd Tamil Nadu IM Norm Closed Circuit Chess Tournament 2023 | Ruy Lopez: Cozio Defense | |
| Oct 23, 2023 | Murugan | 0–1 | Harshad | 2nd Tamil Nadu IM Norm Closed Circuit Chess Tournament 2023 | Dutch Defense: Fianchetto Attack | |
| Jan 1, 2023 | Harshad S | 0–1 | Cramling | Blixt-SM - open Swedish blitz championship | Alekhine Defense: Four Pawns Attack | |
| Jan 1, 2023 | Keinanen | 1–0 | Harshad S | Blixt-SM - open Swedish blitz championship | Queen's Pawn Game: Colle System, Traditional Colle | |
| Jan 1, 2023 | Seo | * | Harshad S | Blixt-SM - open Swedish blitz championship | ? | |
| — | Harshad S | 0–1 | Gorshtein | Round 1: Harshad S - Gorshtein, Ido | Caro-Kann Defense: Advance Variation | |
| — | Harshad S | 1–0 | Moosavifar | Round 3: Harshad S - Moosavifar, Seyed Abolfazl | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| — | Harshad S | 1–0 | Noy | Round 5: Harshad S - Noy, Eyal | Petrov's Defense: Modern Attack | |
| — | Harshad S | 1–0 | Salcedo | Round 7: Harshad S - Salcedo, Richilieu III | Sicilian Defense: Lasker-Pelikan Variation | |
| — | Harshad S | 1–0 | Putrenko | Round 9: Harshad S - Putrenko, Kirill | Sicilian Defense: Najdorf Variation, Adams Attack | |
| — | Frayna | 1–0 | Harshad S | Round 2: Frayna, Janelle Mae - Harshad S | Catalan Opening: Open Defense, Classical Line | |
| — | Baradaran Tamadon | 1–0 | Harshad S | Round 4: Baradaran Tamadon, Arian - Harshad S | Ruy Lopez: Berlin Defense | |
| — | Jval Saurin Patel | 1–0 | Harshad S | Round 6: Jval Saurin Patel - Harshad S | Nimzo-Indian Defense: Sämisch Variation | |
| — | Lim | ½–½ | Harshad S | Round 8: Lim, Zhuo Ren - Harshad S | Catalan Opening: Closed | |