Game |
| Result | Moves |
Year | Event/Locale | Opening |
276. Y Gatineau vs A Demuth |
| ½-½ | 46 | 2018 | French Team Championship | A57 Benko Gambit |
277. A Demuth vs J F Nelis |
| ½-½ | 23 | 2018 | French Team Championship | A36 English |
278. P Barbot vs A Demuth |
| ½-½ | 16 | 2018 | French Team Championship | D32 Queen's Gambit Declined, Tarrasch |
279. S Cossin vs A Demuth |
| ½-½ | 15 | 2018 | French Team Championship | A77 Benoni, Classical, 9...Re8, 10.Nd2 |
280. A Demuth vs S Hautot |
| ½-½ | 32 | 2018 | European Club Cup | D12 Queen's Gambit Declined Slav |
281. A Demuth vs D Kosic |
 | 0-1 | 35 | 2018 | European Club Cup | E00 Queen's Pawn Game |
282. V Fedoseev vs A Demuth |
 | 1-0 | 26 | 2018 | European Club Cup | C41 Philidor Defense |
283. A Demuth vs B Lindberg |
| 1-0 | 55 | 2018 | European Club Cup | E43 Nimzo-Indian, Fischer Variation |
284. D Svetushkin vs A Demuth |
| 1-0 | 37 | 2018 | European Club Cup | C60 Ruy Lopez |
285. A Demuth vs I van der Lende |
| 1-0 | 28 | 2018 | European Club Cup | A06 Reti Opening |
286. O Sulypa vs A Demuth |
| ½-½ | 35 | 2018 | European Club Cup | A88 Dutch, Leningrad, Main Variation with c6 |
287. A Burnett vs A Demuth |
| 0-1 | 40 | 2018 | 4NCL Div 1a 2018/19 | D02 Queen's Pawn Game |
288. A Demuth vs S Franklin |
| ½-½ | 32 | 2018 | 4NCL Div 1a 2018/19 | A05 Reti Opening |
289. A Demuth vs S Giraud |
 | 1-0 | 15 | 2019 | New Caledonia op | A04 Reti Opening |
290. A Demuth vs S Phadke |
| 1-0 | 47 | 2019 | Gibraltar Masters | A83 Dutch, Staunton Gambit |
291. Le Quang Liem vs A Demuth |
| 1-0 | 38 | 2019 | Gibraltar Masters | B27 Sicilian |
292. A Demuth vs D Belenkaya |
| 1-0 | 58 | 2019 | Gibraltar Masters | B10 Caro-Kann |
293. S Tsolakidou vs A Demuth |
| ½-½ | 31 | 2019 | Gibraltar Masters | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
294. A Demuth vs Y Zuo |
| ½-½ | 64 | 2019 | Gibraltar Masters | B30 Sicilian |
295. A Kozak vs A Demuth |
| ½-½ | 37 | 2019 | Gibraltar Masters | A46 Queen's Pawn Game |
296. A Demuth vs J B Bjerre |
| ½-½ | 30 | 2019 | Gibraltar Masters | B53 Sicilian |
297. P Ladron vs A Demuth |
| ½-½ | 79 | 2019 | Gibraltar Masters | C50 Giuoco Piano |
298. A Demuth vs I Bulmaga |
| ½-½ | 43 | 2019 | Gibraltar Masters | A28 English |
299. A Rosell vs A Demuth |
| ½-½ | 47 | 2019 | TCh-CAT Gp1 | A85 Dutch, with c4 & Nc3 |
300. A Demuth vs E Alekseev |
| ½-½ | 21 | 2019 | European Championship | E12 Queen's Indian |