| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. K Pytel vs S Kostyra |
| 1-0 | 30 | 1977 | Polish Championship | A30 English, Symmetrical |
| 2. S Kostyra vs A Borchardt |
| 1-0 | 29 | 1977 | Polish Championship | C17 French, Winawer, Advance |
| 3. H Dobosz vs S Kostyra |
| 1-0 | 35 | 1977 | Polish Championship | E40 Nimzo-Indian, 4.e3 |
| 4. S Kostyra vs M Sarwinski |
| 1-0 | 26 | 1977 | Polish Championship | C17 French, Winawer, Advance |
| 5. S Kostyra vs Sliwa |
 | 0-1 | 32 | 1977 | Polish Championship | B21 Sicilian, 2.f4 and 2.d4 |
| 6. K Socha vs S Kostyra |
| ½-½ | 47 | 1977 | Polish Championship | E18 Queen's Indian, Old Main line, 7.Nc3 |
| 7. S Kostyra vs B Malich |
| ½-½ | 31 | 1981 | Rostock | C02 French, Advance |
| 8. T Jakat vs S Kostyra |
| ½-½ | 33 | 1981 | Rostock | D44 Queen's Gambit Declined Semi-Slav |
| 9. S Kostyra vs P Hesse |
| ½-½ | 46 | 1981 | Rostock | B07 Pirc |
| 10. R Bernard vs S Kostyra |
| ½-½ | 21 | 1981 | Rostock | C02 French, Advance |
| 11. T Paehtz Sr vs S Kostyra |
| 1-0 | 39 | 1981 | Rostock | A07 King's Indian Attack |
| 12. S Kostyra vs B Pietrusiak |
| ½-½ | 24 | 1981 | Rostock | B61 Sicilian, Richter-Rauzer, Larsen Variation, 7.Qd2 |
| 13. E Jeske vs S Kostyra |
| ½-½ | 47 | 1981 | Rostock | A18 English, Mikenas-Carls |
| 14. L Neckar vs S Kostyra |
| ½-½ | 46 | 1981 | Rostock | A06 Reti Opening |
| 15. S Kostyra vs D Neukirch |
| ½-½ | 14 | 1981 | Rostock | B42 Sicilian, Kan |
| 16. F Borkowski vs S Kostyra |
| ½-½ | 52 | 1981 | Polish Team Championship | B41 Sicilian, Kan |
| 17. S Kostyra vs G Chrapkowski |
| 1-0 | 43 | 1981 | Polish Team Championship | B30 Sicilian |
| 18. W Swic vs S Kostyra |
| ½-½ | 27 | 1981 | Polish Team Championship | D28 Queen's Gambit Accepted, Classical |
| 19. S Kostyra vs W Schinzel |
| ½-½ | 23 | 1981 | Polish Team Championship | B93 Sicilian, Najdorf, 6.f4 |
| 20. H Petryk vs S Kostyra |
| 1-0 | 42 | 1981 | Polish Team Championship | C88 Ruy Lopez |
| 21. S Kostyra vs A Sznapik |
| 0-1 | 39 | 1981 | Polish Team Championship | B06 Robatsch |
| 22. A Filipowicz vs S Kostyra |
| ½-½ | 28 | 1981 | Polish Team Championship | A09 Reti Opening |
| 23. S Kostyra vs F Blatny |
| ½-½ | 40 | 1984 | Lang mem 5th | C73 Ruy Lopez, Modern Steinitz Defense |
| 24. S Kostyra vs P Haba |
| 1-0 | 44 | 1984 | Lang mem 5th | B70 Sicilian, Dragon Variation |
| 25. J Pokojowczyk vs S Kostyra |
| 0-1 | 25 | 1987 | Myslenice | C53 Giuoco Piano |
Kibitzing
