| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 226. M Ghinda vs M Diesen |
| ½-½ | 12 | 1978 | Rubinstein Memorial | B11 Caro-Kann, Two Knights, 3...Bg4 |
| 227. M Diesen vs I Farago |
| ½-½ | 9 | 1978 | Rubinstein Memorial | E00 Queen's Pawn Game |
| 228. M Diesen vs U Boensch |
| ½-½ | 19 | 1978 | Rubinstein Memorial | B84 Sicilian, Scheveningen |
| 229. J Bielczyk vs M Diesen |
| ½-½ | 41 | 1978 | Rubinstein Memorial | B93 Sicilian, Najdorf, 6.f4 |
| 230. M Diesen vs Dorfman |
| ½-½ | 26 | 1978 | Rubinstein Memorial | D90 Grunfeld |
| 231. K Honfi vs M Diesen |
| 1-0 | 47 | 1978 | Bajmok | B33 Sicilian |
| 232. M Diesen vs V Raicevic |
| 1-0 | 57 | 1978 | Parcetic Memorial | E06 Catalan, Closed, 5.Nf3 |
| 233. Z Doda vs M Diesen |
| ½-½ | 19 | 1978 | Parcetic Memorial | A49 King's Indian, Fianchetto without c4 |
| 234. M Diesen vs Marjanovic |
| 0-1 | 41 | 1978 | Parcetic Memorial | E21 Nimzo-Indian, Three Knights |
| 235. M Diesen vs D Sahovic |
| ½-½ | 10 | 1978 | Parcetic Memorial | B00 Uncommon King's Pawn Opening |
| 236. F Begovac vs M Diesen |
| ½-½ | 17 | 1978 | Parcetic Memorial | E85 King's Indian, Samisch, Orthodox Variation |
| 237. M Diesen vs L Masic |
| ½-½ | 17 | 1978 | Parcetic Memorial | B28 Sicilian, O'Kelly Variation |
| 238. J L Vilela vs M Diesen |
| ½-½ | 16 | 1978 | Parcetic Memorial | D43 Queen's Gambit Declined Semi-Slav |
| 239. M Diesen vs M Trifunov |
| 1-0 | 35 | 1978 | Parcetic Memorial | E08 Catalan, Closed |
| 240. Matulovic vs M Diesen |
| ½-½ | 52 | 1978 | Parcetic Memorial | B96 Sicilian, Najdorf |
| 241. M Diesen vs P Popovic |
| ½-½ | 17 | 1978 | Parcetic Memorial | D90 Grunfeld |
| 242. P Cicovacki vs M Diesen |
| 0-1 | 37 | 1978 | Parcetic Memorial | D35 Queen's Gambit Declined |
| 243. M Diesen vs G Kluger |
| 1-0 | 43 | 1978 | Parcetic Memorial | E21 Nimzo-Indian, Three Knights |
| 244. W Schmidt vs M Diesen |
| ½-½ | 21 | 1978 | Parcetic Memorial | D30 Queen's Gambit Declined |
| 245. M Diesen vs I Buljovcic |
| 1-0 | 17 | 1978 | Odzaci+ | D27 Queen's Gambit Accepted, Classical |
| 246. T Rakic vs M Diesen |
| ½-½ | 59 | 1978 | Odzaci | D02 Queen's Pawn Game |
| 247. M Diesen vs Matulovic |
| ½-½ | 16 | 1978 | Odzaci | B09 Pirc, Austrian Attack |
| 248. F Portisch vs M Diesen |
| ½-½ | 41 | 1978 | Odzaci | D25 Queen's Gambit Accepted |
| 249. M Diesen vs B Malovic |
| 1-0 | 31 | 1978 | Odzaci | D37 Queen's Gambit Declined |
| 250. R Govedarica vs M Diesen |
| 0-1 | 41 | 1978 | Odzaci | B05 Alekhine's Defense, Modern |
Kibitzing
