| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 226. Anand vs S Mariotti |
| 1-0 | 57 |
1988 |
Thessaloniki | C05 French, Tarrasch |
| 227. C S Santacruz vs S Mariotti |
| 0-1 | 40 |
1988 |
Thessaloniki | A04 Reti Opening |
| 228. Hjartarson vs S Mariotti |
| 1-0 | 40 |
1988 |
Thessaloniki | A55 Old Indian, Main line |
| 229. S Mariotti vs T Yilmaz |
| 1-0 | 54 |
1988 |
Thessaloniki | C55 Two Knights Defense |
| 230. S Mariotti vs Granda-Zuniga |
| ½-½ | 10 |
1988 |
Thessaloniki olm 88\06 | D79 Neo-Grunfeld, 6.O-O, Main line |
| 231. A Zapata vs S Mariotti |
| 1-0 | 54 |
1988 |
Thessaloniki | C03 French, Tarrasch |
| 232. A Greenfeld vs S Mariotti |
| ½-½ | 41 |
1988 |
Thessaloniki | D47 Queen's Gambit Declined Semi-Slav |
| 233. S Mariotti vs Korchnoi |
| ½-½ | 40 |
1988 |
Thessaloniki olm | C02 French, Advance |
| 234. S Mariotti vs C Hon |
| ½-½ | 36 |
1988 |
Thessaloniki | E60 King's Indian Defense |
| 235. S Mariotti vs Ljubojevic |
| ½-½ | 35 |
1988 |
Thessaloniki olm | A46 Queen's Pawn Game |
| 236. E Chinchilla vs S Mariotti |
| 0-1 | 19 |
1988 |
Thessaloniki | C15 French, Winawer |
| 237. Ivkov vs S Mariotti |
| 1-0 | 49 |
1989 |
Chianciano | C01 French, Exchange |
| 238. S Mariotti vs A Testa |
| 0-1 | 35 |
1990 |
Roma | B54 Sicilian |
| 239. P Gagliardi vs S Mariotti |
| 0-1 | 39 |
1990 |
Roma | B93 Sicilian, Najdorf, 6.f4 |
| 240. Barlov vs S Mariotti |
| 1-0 | 51 |
1990 |
Roma | C64 Ruy Lopez, Classical |
| 241. S Mariotti vs E Tommasini |
| ½-½ | 36 |
1990 |
Roma | A43 Old Benoni |
| 242. S Mariotti vs Smyslov |
| ½-½ | 14 |
1990 |
Roma | B06 Robatsch |
| 243. Vaisser vs S Mariotti |
 | 0-1 | 26 |
1990 |
Roma | A92 Dutch |
| 244. S Mariotti vs Geller |
 | 0-1 | 31 |
1990 |
Cattolica | E77 King's Indian |
| 245. S Mariotti vs V Vaccani |
| 1-0 | 51 |
1990 |
Roma | A40 Queen's Pawn Game |
| 246. S Mariotti vs T Gilles |
| 1-0 | 29 |
1994 |
It (open), XI | A43 Old Benoni |
| 247. S Mariotti vs N Legky |
| ½-½ | 39 |
1994 |
It (open), XI | D35 Queen's Gambit Declined |
| 248. C Perissinotto vs S Mariotti |
| 0-1 | 40 |
1994 |
It (open), XI | B22 Sicilian, Alapin |