| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 201. A Rombaldoni vs G Gislason |
| 1-0 | 44 | 2015 | Reykjavik Open | B42 Sicilian, Kan |
| 202. G Gislason vs G Thorhallsson |
| 1-0 | 31 | 2015 | Reykjavik Open | A40 Queen's Pawn Game |
| 203. G Gislason vs E Kakulidis |
| 1-0 | 21 | 2016 | Reykjavik Open | E09 Catalan, Closed |
| 204. G Gislason vs D Di Berardino |
| ½-½ | 69 | 2016 | Reykjavik Open | C84 Ruy Lopez, Closed |
| 205. Isak Orri Karlsson vs G Gislason |
 | 0-1 | 29 | 2016 | Reykjavik Open | D80 Grunfeld |
| 206. S Bromberger vs G Gislason |
| ½-½ | 76 | 2016 | Reykjavik Open | D70 Neo-Grunfeld Defense |
| 207. G Gislason vs H Danielsen |
| ½-½ | 35 | 2016 | Reykjavik Open | A37 English, Symmetrical |
| 208. J Lampert vs G Gislason |
| 1-0 | 74 | 2016 | Reykjavik Open | B49 Sicilian, Taimanov Variation |
| 209. G Gislason vs J Hardarson |
| 0-1 | 62 | 2016 | Reykjavik Open | A09 Reti Opening |
| 210. G P Jonsson vs G Gislason |
| 0-1 | 38 | 2016 | Reykjavik Open | B27 Sicilian |
| 211. G Gislason vs T Edel |
| ½-½ | 55 | 2016 | Reykjavik Open | A81 Dutch |
| 212. A Darnell vs G Gislason |
| 1-0 | 27 | 2016 | Reykjavik Open | D90 Grunfeld |
| 213. G Gislason vs B Thorfinnsson |
| 0-1 | 21 | 2016 | ch-ISL | A40 Queen's Pawn Game |
| 214. H S Gretarsson vs G Gislason |
| 0-1 | 34 | 2016 | ch-ISL | D78 Neo-Grunfeld, 6.O-O c6 |
| 215. G Kjartansson vs G Gislason |
| 0-1 | 34 | 2016 | ch-ISL | E99 King's Indian, Orthodox, Taimanov |
| 216. B Thorfinnsson vs G Gislason |
| 1-0 | 33 | 2016 | ch-ISL | E91 King's Indian |
| 217. H Stefansson vs G Gislason |
| 1-0 | 35 | 2016 | TCh-ISL Div 1 -17 | D78 Neo-Grunfeld, 6.O-O c6 |
| 218. E de Winter vs G Gislason |
| 0-1 | 36 | 2017 | Reykjavik Open | D93 Grunfeld, with Bf4 & e3 |
| 219. G Gislason vs Z Almasi |
| 0-1 | 31 | 2017 | Reykjavik Open | E60 King's Indian Defense |
| 220. A Prieto vs G Gislason |
| 0-1 | 32 | 2017 | Reykjavik Open | E91 King's Indian |
| 221. G Gislason vs J Doknjas |
| 1-0 | 20 | 2017 | Reykjavik Open | D02 Queen's Pawn Game |
| 222. E Perelshteyn vs G Gislason |
| 1-0 | 37 | 2017 | Reykjavik Open | B06 Robatsch |
| 223. G Gislason vs A Yakimenko |
| 1-0 | 51 | 2017 | Reykjavik Open | A40 Queen's Pawn Game |
| 224. E Blomqvist vs G Gislason |
| 1-0 | 39 | 2017 | Reykjavik Open | D78 Neo-Grunfeld, 6.O-O c6 |
| 225. G Gislason vs M Dougherty |
| 0-1 | 48 | 2017 | Reykjavik Open | A40 Queen's Pawn Game |
Kibitzing
