| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 201. M Diesen vs M Basman |
| 1-0 | 53 | 1978 | Aaronson Masters | D10 Queen's Gambit Declined Slav |
| 202. B Kurajica vs M Diesen |
| 1-0 | 43 | 1978 | Osijek | C81 Ruy Lopez, Open, Howell Attack |
| 203. M Diesen vs Gligoric |
| ½-½ | 21 | 1978 | Osijek | C99 Ruy Lopez, Closed, Chigorin, 12...cd |
| 204. K Hulak vs M Diesen |
| ½-½ | 20 | 1978 | Osijek | A07 King's Indian Attack |
| 205. M Diesen vs S Kosanski |
| 0-1 | 28 | 1978 | Osijek | A42 Modern Defense, Averbakh System |
| 206. R Calvo Minguez vs M Diesen |
| ½-½ | 63 | 1978 | Osijek | D55 Queen's Gambit Declined |
| 207. M Diesen vs Adorjan |
| ½-½ | 39 | 1978 | Osijek | B30 Sicilian |
| 208. Ivkov vs M Diesen |
| 1-0 | 34 | 1978 | Osijek | A34 English, Symmetrical |
| 209. M Diesen vs Sax |
| ½-½ | 15 | 1978 | Osijek | B08 Pirc, Classical |
| 210. G Tringov vs M Diesen |
| ½-½ | 22 | 1978 | Osijek | B92 Sicilian, Najdorf, Opocensky Variation |
| 211. Velimirovic vs M Diesen |
| 1-0 | 41 | 1978 | Osijek | B94 Sicilian, Najdorf |
| 212. M Diesen vs B Pocuca |
| 1-0 | 42 | 1978 | Osijek | B09 Pirc, Austrian Attack |
| 213. P Smederevac vs M Diesen |
| ½-½ | 20 | 1978 | Osijek | B40 Sicilian |
| 214. M Diesen vs D Marovic |
| ½-½ | 14 | 1978 | Osijek | B17 Caro-Kann, Steinitz Variation |
| 215. M Diesen vs L M Kovacs |
| ½-½ | 24 | 1978 | Bajmok | C91 Ruy Lopez, Closed |
| 216. M Diesen vs Matulovic |
| 1-0 | 78 | 1978 | Bajmok | D25 Queen's Gambit Accepted |
| 217. Andersson vs M Diesen |
| ½-½ | 24 | 1978 | Rubinstein Memorial | A34 English, Symmetrical |
| 218. A Kuligowski vs M Diesen |
| 0-1 | 27 | 1978 | Rubinstein Memorial | E87 King's Indian, Samisch, Orthodox |
| 219. W Schmidt vs M Diesen |
| ½-½ | 35 | 1978 | Rubinstein Memorial | A15 English |
| 220. M Diesen vs J Bednarski |
| 1-0 | 51 | 1978 | Rubinstein Memorial | C11 French |
| 221. S Garcia Martinez vs M Diesen |
| ½-½ | 13 | 1978 | Rubinstein Memorial | D47 Queen's Gambit Declined Semi-Slav |
| 222. M Diesen vs M Knezevic |
| 1-0 | 22 | 1978 | Rubinstein Memorial | E20 Nimzo-Indian |
| 223. M Diesen vs M Tseitlin |
| ½-½ | 18 | 1978 | Rubinstein Memorial | B33 Sicilian |
| 224. A Sznapik vs M Diesen |
| 0-1 | 40 | 1978 | Rubinstein Memorial | B92 Sicilian, Najdorf, Opocensky Variation |
| 225. M Diesen vs W Swic |
| ½-½ | 28 | 1978 | Rubinstein Memorial | D97 Grunfeld, Russian |
Kibitzing
