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| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. Taimanov vs Jansa |
| ½-½ | 51 | 1969 | Asztalos Memorial | D91 Grunfeld, 5.Bg5 |
| 2. Kholmov vs Jansa |
| ½-½ | 44 | 1972 | Sukhumi | D91 Grunfeld, 5.Bg5 |
| 3. V Kovacevic vs Jansa |
 | 0-1 | 25 | 1973 | Amsterdam IBM-B | D91 Grunfeld, 5.Bg5 |
| 4. Antoshin vs Jansa |
| ½-½ | 18 | 1974 | Chigorin Memorial | D91 Grunfeld, 5.Bg5 |
| 5. J Lechtynsky vs Jansa |
| ½-½ | 71 | 1976 | Czechoslovak Championship | D91 Grunfeld, 5.Bg5 |
| 6. Gheorghiu vs Jansa |
| 1-0 | 41 | 1976 | Chigorin Memorial | D91 Grunfeld, 5.Bg5 |
| 7. N Padevsky vs Jansa |
| ½-½ | 16 | 1977 | Kragujevac | D91 Grunfeld, 5.Bg5 |
| 8. Forintos vs Jansa |
| 1-0 | 54 | 1980 | Bar | D91 Grunfeld, 5.Bg5 |
| 9. J Lechtynsky vs Jansa |
| ½-½ | 20 | 1981 | CSR-ch International | D91 Grunfeld, 5.Bg5 |
| 10. Z Djukic vs Jansa |
| 0-1 | 88 | 1983 | Nis | D91 Grunfeld, 5.Bg5 |
| 11. Ivkov vs Jansa |
| ½-½ | 37 | 1984 | Bor | D91 Grunfeld, 5.Bg5 |
| 12. P Stempin vs Jansa |
| ½-½ | 74 | 1985 | Prague Zonal | D91 Grunfeld, 5.Bg5 |
| 13. A Lein vs Jansa |
| 0-1 | 42 | 1985 | Borgarnes | D91 Grunfeld, 5.Bg5 |
| 14. Z Nikolic vs Jansa |
| ½-½ | 74 | 1985 | Bor | D91 Grunfeld, 5.Bg5 |
| 15. A Groszpeter vs Jansa |
| ½-½ | 93 | 1986 | Zenica | D91 Grunfeld, 5.Bg5 |
| 16. M Schaefer vs Jansa |
| 0-1 | 42 | 1992 | Muenster | D91 Grunfeld, 5.Bg5 |
| 17. N Murshed vs Jansa |
| 1-0 | 41 | 1992 | Gausdal International | D91 Grunfeld, 5.Bg5 |
| 18. G Barbero vs Jansa |
| 0-1 | 33 | 1995 | Lazne Bohdanec | D91 Grunfeld, 5.Bg5 |
| 19. M Jostes vs Jansa |
| 0-1 | 26 | 1995 | Gausdal International | D91 Grunfeld, 5.Bg5 |
| 20. Smejkal vs Jansa |
| ½-½ | 17 | 1998 | CZE-chT 9899 | D91 Grunfeld, 5.Bg5 |
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Kibitzing
