Decin CZE Decin CZE· Jun 25 – 27, 1978 | Jun 25 – 27, 1978 | Classical | 12 | 2260 | 9 |
Decin 8th Decin CZE· Jun 9 – 27, 1978 | Jun 9 – 27, 1978 | Classical | 17 | 2333 | 93 |
Decin-B 8th Decin CZE· Jun 10 – 24, 1978 | Jun 10 – 24, 1978 | Classical | 16 | 2343 | 102 |
Decin 8th+ Decin CZE· Jun 9 – 21, 1978 | Jun 9 – 21, 1978 | Classical | 11 | 2347 | 10 |
Jurmala Jurmala LAT· Jun 3 – 21, 1978 | Jun 3 – 21, 1978 | Classical | 19 | 2479 | 131 |
Kiev Kiev UKR Kiev Kiev UKR· Jun 3 – 20, 1978 | Jun 3 – 20, 1978 | Classical | 18 | 2428 | 56 |
Kiev Kiev UKR· Jun 4 – 19, 1978 | Jun 4 – 19, 1978 | Classical | 23 | 2372 | 102 |
| 4. Gosa Smederevska Palanka YU4. Gosa Smederevska Palanka Y· Jun 3 – 18, 1978 | Jun 3 – 18, 1978 | Classical | 14 | 2334 | 15 |
| Smederevska PalankaSmederevska Palanka YUG· May 13 – Jun 18, 1978 | May 13 – Jun 18, 1978 | Classical | 13 | 2324 | 61 |
Decin Decin CZE· Jun 11, 1978 | Jun 11, 1978 | Classical | 11 | 2363 | 8 |
Tournoi de l'Est Montreal CAN· Jun 10 – 11, 1978 | Jun 10 – 11, 1978 | Classical | 7 | 2068 | 6 |
| VancouverVancouver· May 19 – Jun 11, 1978 | May 19 – Jun 11, 1978 | Classical | 12 | 2136 | 9 |
Warsaw Warsaw POL· May 30 – Jun 9, 1978 | May 30 – Jun 9, 1978 | Classical | 13 | 2285 | 14 |
Polonia 4th Warsaw POL· May 30 – Jun 9, 1978 | May 30 – Jun 9, 1978 | Classical | 13 | 2298 | 56 |
Kiev UKR Kiev UKR· Jun 5, 1978 | Jun 5, 1978 | Classical | 11 | 2390 | 9 |
Lasker Memorial Montreal CAN· Jun 2 – 4, 1978 | Jun 2 – 4, 1978 | Classical | 8 | 2047 | 10 |
GER Team Ch fin Bad Kissingen GER· Jun 2 – 4, 1978 | Jun 2 – 4, 1978 | Classical | 34 | 2318 | 32 |
Niksic Niksic MNE· 1978 | 1978 | Classical | 15 | 2523 | 90 |
| Kamen Piskov Memorial 2ndRuse· 1978 | 1978 | Classical | 14 | 2356 | 66 |
| Staffordshire Open· May 27 – 30, 1978 | May 27 – 30, 1978 | Classical | 7 | 2028 | 6 |
Central CC Ch Vancouver BC CAN· Feb 6 – May 29, 1978 | Feb 6 – May 29, 1978 | Classical | 11 | 1792 | 10 |
| CSR ChMarianske Lazne· May 7 – 26, 1978 | May 7 – 26, 1978 | Classical | 17 | 2225 | 122 |
May Open Montreal CAN· May 20 – 22, 1978 | May 20 – 22, 1978 | Classical | 8 | 1819 | 7 |
Paul Keres Memorial (3rd) Vancouver BC CAN· May 20 – 22, 1978 | May 20 – 22, 1978 | Classical | 11 | 2109 | 7 |
Ontario Open Ottawa CAN· May 20 – 22, 1978 | May 20 – 22, 1978 | Classical | 10 | 2011 | 7 |
| West Midlands Zonal· Feb 10 – May 7, 1978 | Feb 10 – May 7, 1978 | Classical | 8 | 2114 | 7 |
| Western Canada OpenEdmonton· Apr 30 – May 6, 1978 | Apr 30 – May 6, 1978 | Classical | 9 | 2219 | 7 |
ISR Ch Tel Aviv ISR· Apr 16 – May 4, 1978 | Apr 16 – May 4, 1978 | Classical | 16 | 2382 | 117 |
| USSROrdzhonikidze· 1978 | 1978 | Classical | 17 | 2524 | 12 |
| OrdzhonikidzeOrdzhonikidze· 1978 | 1978 | Classical | 8 | 2225 | 5 |
Brasilia zt women Brasilia BRA· 1978 | 1978 | Classical | 7 | 2136 | 19 |
| URS-CupTOrdzhonikidze· 1978 | 1978 | Classical | 42 | 2411 | 40 |
| URSURS· 1978 | 1978 | Classical | 55 | 2285 | 35 |
| ZamardiZamardi· 1978 | 1978 | Classical | 15 | 2324 | 62 |
Sao Paulo Sao Paulo BRA· 1978 | 1978 | Classical | 19 | 2445 | 101 |
| Telechess ol1 7778telex· Apr 25, 1978 | Apr 25, 1978 | Classical | 30 | 2432 | 18 |
Vrnjacka Banja Vrnjacka Banja SRB· Apr 6 – 24, 1978 | Apr 6 – 24, 1978 | Classical | 16 | 2429 | 115 |
Printanier/Spring Open Montreal CAN· Apr 22 – 23, 1978 | Apr 22 – 23, 1978 | Classical | 11 | 2023 | 9 |
| OsijekOsijek· Apr 7 – 22, 1978 | Apr 7 – 22, 1978 | Classical | 17 | 2445 | 104 |
Ottawa Ch Ottawa CAN· Mar 9 – Apr 20, 1978 | Mar 9 – Apr 20, 1978 | Classical | 6 | 2015 | 7 |
Lone Pine Lone Pine, CA USA· Apr 12, 1978 | Apr 12, 1978 | Classical | 24 | 2352 | 13 |
| Championship A Categorie· Jan 16 – Apr 11, 1978 | Jan 16 – Apr 11, 1978 | Classical | 15 | 1956 | 22 |
Vrnjacka Banja YUG Vrnjacka Banja SRB· Apr 7, 1978 | Apr 7, 1978 | Classical | 7 | 2424 | 6 |
FRG Ch Bad Neuenahr GER· 1978 | 1978 | Classical | 12 | 2304 | 10 |
FRG Ch 15th Bad Neuenahr GER· 1978 | 1978 | Classical | 13 | 2289 | 8 |
Gausdal Gausdal NOR· 1978 | 1978 | Classical | 9 | 2411 | 5 |
UZB Ch Tashkent UZB· 1978 | 1978 | Classical | 14 | 2328 | 13 |
Lone Pine Open Lone Pine, CA USA· 1978 | 1978 | Classical | 56 | 2427 | 73 |
Lvov zt Lvov UKR· 1978 | 1978 | Classical | 14 | 2491 | 43 |
| Lvov ztLvov zt· 1978 | 1978 | Classical | 15 | 2419 | 94 |