TCh-RUS Rapid 2023 Sochi RUS· Oct 18 – 19, 2023 | Oct 18 – 19, 2023 | Rapid | 117 | 2286 | 251 |
| FICGS__CHESS__RAPID_M__000151FICGS· Oct 18, 2023 | Oct 18, 2023 | Classical | 7 | 2216 | 21 |
31. TCh-CRO Women 2023 Veli Losinj CRO· Oct 11 – 18, 2023 | Oct 11 – 18, 2023 | Classical | 39 | 1917 | 120 |
| FICGS__CHESS__CLASS_A__000274FICGS· Oct 18, 2023 | Oct 18, 2023 | Classical | 7 | 1978 | 19 |
| First Saturday IM October 2023Budapest· Oct 7 – 17, 2023 | Oct 7 – 17, 2023 | Classical | 10 | 2247 | 9 |
| FICGS__CHESS__RAPID_B__000393FICGS· Oct 17, 2023 | Oct 17, 2023 | Classical | 6 | 1725 | 12 |
FSIM October 2023 Budapest HUN· Oct 7 – 17, 2023 | Oct 7 – 17, 2023 | Classical | 10 | 2247 | 41 |
USA Ch 2023 Saint Louis USA· Oct 5 – 17, 2023 | Oct 5 – 17, 2023 | Classical | 12 | 2682 | 65 |
USA Ch w 2023 Saint Louis USA· Oct 5 – 17, 2023 | Oct 5 – 17, 2023 | Classical | 12 | 2321 | 66 |
TCh-RUS Blitz w 2023 Sochi RUS· Oct 17, 2023 | Oct 17, 2023 | Blitz | 63 | 1947 | 225 |
2. Manaus Open 2023 Manaus BRA· Oct 11 – 17, 2023 | Oct 11 – 17, 2023 | Classical | 103 | 1790 | 382 |
31. TCh-CRO Div 1a 2023 Veli Losinj CRO· Oct 11 – 17, 2023 | Oct 11 – 17, 2023 | Classical | 55 | 2378 | 164 |
FSGM October 2023 Budapest HUN· Oct 7 – 17, 2023 | Oct 7 – 17, 2023 | Classical | 11 | 2389 | 54 |
TCh-RUS Blitz 2023 Sochi RUS· Oct 17, 2023 | Oct 17, 2023 | Blitz | 123 | 2275 | 359 |
Ste-Foy 1 2023-24 Ste-Foy CAN· Sep 11 – Oct 16, 2023 | Sep 11 – Oct 16, 2023 | Classical | 11 | 1569 | 7 |
| FICGS__CHESS__CLASS_M__000129FICGS· Oct 16, 2023 | Oct 16, 2023 | Classical | 7 | 2265 | 21 |
RUS Ch Rapid w 2023 Sochi RUS· Oct 15 – 16, 2023 | Oct 15 – 16, 2023 | Rapid | 68 | 1982 | 219 |
Rapid Chess Superleague Poland POL· Apr 4 – Oct 16, 2023 | Apr 4 – Oct 16, 2023 | Rapid | 60 | 2469 | 224 |
RUS Ch Rapid 2023 Sochi RUS· Oct 15 – 16, 2023 | Oct 15 – 16, 2023 | Rapid | 133 | 2263 | 332 |
Odensemesterskabet IM Odense DEN· Oct 13 – 15, 2023 | Oct 13 – 15, 2023 | Classical | 5 | 2381 | 10 |
27. Venetian Autumn 2023 Venice ITA· Oct 13 – 15, 2023 | Oct 13 – 15, 2023 | Classical | 6 | 2169 | 13 |
Odensemesterskabet 2023 M2 Odense DEN· Oct 13 – 15, 2023 | Oct 13 – 15, 2023 | Classical | 6 | 2132 | 14 |
Wolfgang Uhlmann Inv 2023 Dresden GER· Oct 7 – 15, 2023 | Oct 7 – 15, 2023 | Classical | 11 | 2449 | 53 |
Odensemesterskabet 2023 M1 Odense DEN· Oct 13 – 15, 2023 | Oct 13 – 15, 2023 | Classical | 6 | 2206 | 15 |
FIDE World Junior Blitz women Pula (Sardinia) ITA· Oct 14 – 15, 2023 | Oct 14 – 15, 2023 | Blitz | 23 | 2032 | 121 |
Gulf Coast October Open Estero, FL USA· Oct 13 – 15, 2023 | Oct 13 – 15, 2023 | Classical | 19 | 1978 | 20 |
TCh-ISL Kvika 2023-24 Reykjavik ISL· Oct 12 – 15, 2023 | Oct 12 – 15, 2023 | Classical | 60 | 2214 | 117 |
TCh-SUI 2023 Switzerland SUI· Apr 16 – Oct 15, 2023 | Apr 16 – Oct 15, 2023 | Classical | 137 | 2261 | 362 |
TCh-SWE Elitserien Sweden SWE· Jan 20 – Oct 15, 2023 | Jan 20 – Oct 15, 2023 | Classical | 132 | 2294 | 294 |
Ontario Ch U20 Toronto CAN· Oct 13 – 15, 2023 | Oct 13 – 15, 2023 | Classical | 39 | 1337 | 52 |
1000GM Sunnyvale Oct 2023 Sunnyvale USA· Oct 6 – 15, 2023 | Oct 6 – 15, 2023 | Classical | 11 | 2372 | 40 |
Fagernes GM Swiss Aut Fagernes NOR· Oct 8 – 15, 2023 | Oct 8 – 15, 2023 | Classical | 79 | 2204 | 342 |
XI Copa Camara Masters Cancun MEX· Oct 11 – 15, 2023 | Oct 11 – 15, 2023 | Classical | 65 | 2173 | 208 |
FIDE World Junior Blitz Pula (Sardinia) ITA· Oct 14 – 15, 2023 | Oct 14 – 15, 2023 | Blitz | 39 | 2244 | 208 |
45. Arco Open 2023 Arco ITA· Oct 7 – 15, 2023 | Oct 7 – 15, 2023 | Classical | 175 | 1843 | 626 |
RUS Ch Blitz w 2023 Sochi RUS· Oct 14, 2023 | Oct 14, 2023 | Blitz | 73 | 1977 | 245 |
RUS Ch Blitz 2023 Sochi RUS· Oct 14, 2023 | Oct 14, 2023 | Blitz | 134 | 2271 | 391 |
Shenzhen Nanshan women Shenzhen CHN· Oct 11 – 13, 2023 | Oct 11 – 13, 2023 | Classical | 8 | 2318 | 19 |
Shenzhen Nanshan Men 2023 Shenzhen CHN· Oct 11 – 13, 2023 | Oct 11 – 13, 2023 | Classical | 8 | 2581 | 26 |
FIDE World Junior Rapid Pula (Sardinia) ITA· Oct 10 – 12, 2023 | Oct 10 – 12, 2023 | Rapid | 46 | 2132 | 235 |
73. ch-RUS w 2023 St Petersburg RUS· Oct 2 – 12, 2023 | Oct 2 – 12, 2023 | Classical | 12 | 2346 | 64 |
FIDE World Junior Rapid women Pula (Sardinia) ITA· Oct 10 – 12, 2023 | Oct 10 – 12, 2023 | Rapid | 23 | 2032 | 119 |
Pearl Blitz 2023 Sochi RUS· Oct 12, 2023 | Oct 12, 2023 | Blitz | 61 | 2169 | 168 |
76. ch-RUS 2023 St Petersburg RUS· Oct 2 – 12, 2023 | Oct 2 – 12, 2023 | Classical | 12 | 2516 | 64 |
4. La Nucia Open 2023 La Nucia ESP· Oct 7 – 12, 2023 | Oct 7 – 12, 2023 | Classical | 47 | 2144 | 89 |
Caissa Hotel Elma 2023 Ayvalik TUR· Oct 9 – 11, 2023 | Oct 9 – 11, 2023 | Classical | 12 | 1941 | 39 |
Mercredi 2023.09.05 ABCD Montreal CAN· Sep 6 – Oct 11, 2023 | Sep 6 – Oct 11, 2023 | Classical | 24 | 1860 | 50 |
| FICGS__CHESS__CLASS_B__000370FICGS· Oct 11, 2023 | Oct 11, 2023 | Classical | 10 | 1884 | 29 |
Neyshekar GM Norm 2023 Ahvaz IRI· Oct 5 – 11, 2023 | Oct 5 – 11, 2023 | Classical | 10 | 2391 | 36 |
Pearl Rapid 2023 Sochi RUS· Oct 9 – 11, 2023 | Oct 9 – 11, 2023 | Rapid | 54 | 2175 | 159 |