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| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. A Kostin vs G Kopjonkin |
| ½-½ | 24 | 1994 | Gyongyos Open | B22 Sicilian, Alapin |
| 2. A Kostin vs J Janos |
| 1-0 | 39 | 1996 | SVK-ch op | B22 Sicilian, Alapin |
| 3. A Kostin vs R Kalod |
| 0-1 | 51 | 1996 | Moravia-ch op | B22 Sicilian, Alapin |
| 4. A Kostin vs S Kislov |
| 1-0 | 31 | 1997 | Zagorovsky Memorial op | B22 Sicilian, Alapin |
| 5. A Kostin vs Sakaev |
| 0-1 | 32 | 2005 | RUS-chT 12th | B22 Sicilian, Alapin |
| 6. A Kostin vs S Voitsekhovsky |
| 1-0 | 35 | 2005 | Voronezh op | B22 Sicilian, Alapin |
| 7. A Kostin vs K Chernyshov |
| 0-1 | 31 | 2006 | Voronezh op-A | B22 Sicilian, Alapin |
| 8. A Kostin vs S Iskusnyh |
| ½-½ | 28 | 2007 | Russian Championship Higher League | B22 Sicilian, Alapin |
| 9. A Kostin vs P Kolmakov |
| 0-1 | 27 | 2008 | Moscow op-A 04th | B22 Sicilian, Alapin |
| 10. A Kostin vs A Pichugin |
| 0-1 | 65 | 2008 | Moscow op-A 04th | B22 Sicilian, Alapin |
| 11. A Kostin vs V Chernov |
| 0-1 | 57 | 2008 | Voronezh CC-ch | B22 Sicilian, Alapin |
| 12. A Kostin vs Artiom Golovchanov |
| 0-1 | 27 | 2009 | Voronezh Region-ch | B22 Sicilian, Alapin |
| 13. A Kostin vs L Golovin |
| 1-0 | 42 | 2010 | Anapa op-B | B22 Sicilian, Alapin |
| 14. A Kostin vs V Vetoshko |
| 1-0 | 32 | 2011 | Lvov Vasylyshyn Memorial IM 8th | B22 Sicilian, Alapin |
| 15. A Kostin vs M Codenotti |
| 0-1 | 37 | 2013 | Kesarovski Georgiev Memorial-A 12th | B22 Sicilian, Alapin |
| 16. A Kostin vs A Rakhmanov |
| 0-1 | 23 | 2014 | Voronezh op-A 18th | B22 Sicilian, Alapin |
| 17. A Kostin vs P Kornilov |
| 1-0 | 38 | 2014 | Voronezh-ch | B22 Sicilian, Alapin |
| 18. A Kostin vs Yury Atanazevich |
| 1-0 | 20 | 2014 | Voronezh Regional-ch | B22 Sicilian, Alapin |
| 19. A Kostin vs I Uryupin |
| 1-0 | 23 | 2017 | Tambov Korensky Memorial 26th | B22 Sicilian, Alapin |
| 20. A Kostin vs A Grachev |
| 0-1 | 60 | 2018 | Voronezh op-A 22nd | B22 Sicilian, Alapin |
| 21. A Kostin vs A Sinitsina |
| 1-0 | 35 | 2018 | Voronezh op-A 22nd | B22 Sicilian, Alapin |
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Kibitzing
