| Apr 18, 2025 | Koustuv Dash | 0–1 | Rajesh | Round 10: Koustuv Dash - Rajesh, V A V | Nimzo-Indian Defense: St. Petersburg Variation | |
| Apr 17, 2025 | Schekachikhin | ½–½ | Koustuv Dash | Round 9: Schekachikhin, Maksim - Koustuv Dash | Caro-Kann Defense: Apocalypse Attack | |
| Apr 16, 2025 | Koustuv Dash | ½–½ | Sammed Jaykumar | Round 8: Koustuv Dash - Sammed Jaykumar, Shete | Nimzo-Indian Defense: Reshevsky Variation | |
| Apr 15, 2025 | Panda Sambit | 0–1 | Koustuv Dash | Round 7: Panda Sambit - Koustuv Dash | King's Indian Attack: Yugoslav Variation | |
| Apr 11, 2025 | Koustuv Dash | 0–1 | Mehar | Round 2: Koustuv Dash - Mehar, Chinna Reddy C.H. | Nimzo-Indian Defense: Normal Variation | |
| Mar 11, 2025 | Koustuv Dash | ½–½ | Nitin | National Men Team Championship 2025 | King's Indian Defense | |
| Mar 10, 2025 | Setumadhav Yellumahanthi | ½–½ | Koustuv Dash | National Men Team Championship 2025 | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Mar 9, 2025 | Koustuv Dash | 0–1 | Vignesh N R | National Men Team Championship 2025 | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Mar 8, 2025 | Shyam Prasad O | 0–1 | Koustuv Dash | National Men Team Championship 2025 | Catalan Opening: Closed | |
| Mar 8, 2025 | Samarth Sreeni Warrier | 0–1 | Koustuv Dash | National Men Team Championship 2025 | Queen's Gambit Declined: Three Knights Variation | |
| Mar 6, 2025 | Koustuv Dash | 1–0 | Sree Shaunak Chanda | National Men Team Championship 2025 | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Dec 25, 2024 | Koustuv Dash | 0–1 | Aronyak Ghosh | Athens of the East 4th International Grand Master Open Chess Tournament-2024 CATEGORY A | Nimzo-Indian Defense: St. Petersburg Variation | |
| Jul 23, 2024 | Sundram Kumar | 0–1 | Koustuv Dash | Round 11: Sundram Kumar - Koustuv Dash | Sicilian Defense: Closed | |
| Jul 22, 2024 | Koustuv Dash | 0–1 | Mukund Hemant Agarwal | Round 10: Koustuv Dash - Mukund Hemant Agarwal | Nimzo-Indian Defense: Normal Variation, Botvinnik System | |
| Jul 21, 2024 | Mrithyunjay Mahadevan | ½–½ | Koustuv Dash | Round 9: Mrithyunjay Mahadevan - Koustuv Dash | English Opening: Caro-Kann Defensive System | |
| Jul 18, 2024 | Koustuv Dash | 1–0 | Arul Prakash N | Round 6: Koustuv Dash - Arul Prakash N | Benoni Defense | |
| Jul 18, 2024 | Arpith S Bijoy | ½–½ | Koustuv Dash | Round 5: Arpith S Bijoy - Koustuv Dash | Bogo-Indian Defense: Retreat Variation | |
| Jul 17, 2024 | Koustuv Dash | 1–0 | Nimay Agrawal | Round 4: Koustuv Dash - Nimay Agrawal | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jul 16, 2024 | Avadhoot Lokesh Bhakti Brahme | 0–1 | Koustuv Dash | Round 3: Avadhoot Lokesh Bhakti Brahme - Koustuv Dash | Queen's Gambit Declined | |
| Jul 16, 2024 | Koustuv Dash | 1–0 | Parth Belwal | Round 2: Koustuv Dash - Parth Belwal | Indian Defense: Normal Variation | |
| Jul 15, 2024 | Koustuv Dash | 0–1 | Sriram Adarsh Uppala | Round 8: Koustuv Dash - Sriram Adarsh Uppala | Nimzo-Indian Defense: Normal Variation | |
| Jul 15, 2024 | Jaiveer Mahendru | 0–1 | Koustuv Dash | Round 7: Jaiveer Mahendru - Koustuv Dash | Caro-Kann Defense: Maróczy Variation | |
| Jul 15, 2024 | Arnav Bhatia | 0–1 | Koustuv Dash | Round 1: Arnav Bhatia - Koustuv Dash | Caro-Kann Defense: Panov Attack, Modern Defense | |
| May 22, 2024 | Koustuv Dash | ½–½ | Sherla Prathamesh | Round 9: Koustuv Dash - Sherla Prathamesh | Dutch Defense: Classical Variation | |
| May 20, 2024 | Agnivo Chakraborty | 1–0 | Koustuv Dash | Round 6: Agnivo Chakraborty - Koustuv Dash | Caro-Kann Defense: Advance Variation, Van der Wiel Attack | |
| May 20, 2024 | Koustuv Dash | ½–½ | Gyana Sai Santhosh M | Round 5: Koustuv Dash - Gyana Sai Santhosh M | Nimzo-Indian Defense: St. Petersburg Variation | |
| May 19, 2024 | Gade Sharanya | 0–1 | Koustuv Dash | Round 4: Gade Sharanya - Koustuv Dash | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 19, 2024 | Koustuv Dash | 1–0 | Nishant T.R. | Round 3: Koustuv Dash - Nishant T.R. | Benko Gambit | |
| May 18, 2024 | Patil Omkar U | 0–1 | Koustuv Dash | Round 2: Patil Omkar U - Koustuv Dash | Queen's Gambit Declined: Orthodox Defense | |
| May 18, 2024 | Koustuv Dash | 1–0 | Kanishk Sagar Sawant | Round 1: Koustuv Dash - Kanishk Sagar Sawant | English Defense | |
| Aug 27, 2024 | Koustuv Dash | 0–1 | Sethuraman | Round 11: Koustuv Dash - Sethuraman, S.P. | Queen's Indian Accelerated | |
| Jun 4, 2023 | Koustuv | 0–1 | Sanket | Maharashtra Chess Festival | Tarrasch Defense: Schara Gambit | |
| Jan 1, 2023 | Koustuv | ½–½ | Saravana | MPL 59th Senior National | Slav Defense: Quiet Variation, Pin Defense | |
| Dec 30, 2022 | Koustuv | * | Amit | MPL 59th Senior National | Slav Defense: Chebanenko Variation | |
| Dec 29, 2022 | Bharat | 1–0 | Koustuv | MPL 59th Senior National | Caro-Kann Defense: Advance Variation | |
| Dec 27, 2022 | Ayush | 1–0 | Koustuv | MPL 59th Senior National | Caro-Kann Defense: Advance Variation, Short Variation | |
| Dec 26, 2022 | Koustuv | 1–0 | Dhananjay | MPL 59th Senior National | King's Indian Defense: Orthodox Variation, Positional Defense, Closed Line | |
| Dec 25, 2022 | Koustuv | 1–0 | Yuvraj | MPL 59th Senior National | Semi-Slav Defense: Normal Variation | |
| Dec 23, 2022 | Koustuv | * | Narayan | MPL 59th Senior National | Nimzo-Indian Defense: Rubinstein System | |
| Dec 22, 2022 | Aronyak | 1–0 | Koustuv | MPL 59th Senior National | King's Indian Attack | |