| Campeonato Provincial Individual Preferente Almussafes 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Almussafes (Valencia) · ESP | Classical | 24 |
| Campeonato Provincial Individual Segunda Benimaclet 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Valencia · ESP | Classical | 84 |
| Campeonato Provincial Individual Primera Benimaclet 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Valencia · ESP | Classical | 86 |
| Campeonato Provincial Individual Preferente Castellon 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Castellon · ESP | Classical | 51 |
| Campeonato Provincial Individual Absoluto Castellon 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Castellon · ESP | Classical | 25 |
| Campeonato Provincial Individual Segunda Alzira 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Alzira (Alicante) · ESP | Classical | 49 |
| Campeonato Provincial Individual Primera Alzira 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Alzira (Alicante) · ESP | Classical | 28 |
| Campeonato Provincial Individual Preferente Alzira 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Alzira (Alicante) · ESP | Classical | 16 |
| III. clanska liga vzhod 2026 | 2026-10-03
2026-10-11 | Slovenska Bistrica · SLO | Classical | 150 |
| Igubor Micah Rapid Chess Tournament - October 2026 | 2026-10-03
2026-10-03 | Benin · NGR | Rapid | 36 |
| Open de Bischwiller Octobre 2026 | 2026-10-03
2026-10-04 | BISCHWILLER · FRA | Classical | 32 |
| Campeonato Provincial Individual Preferente Alicante 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Alicante · ESP | Classical | 16 |
| Campeonato Provincial Individual Absoluto Alicante 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Alicante · ESP | Classical | 20 |
| Campeonato Provincial Individual Segunda Xeraco 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Xeraco (Valencia) · ESP | Classical | 27 |
| Campeonato Provincial Individual Primera Xeraco 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Xeraco (Valencia) · ESP | Classical | 17 |
| Harju County Rapid Chess Championship 2026 | 2026-10-03
2026-10-03 | Viimsi · EST | Rapid | 36 |
| 2nd Verevi Cup | 2026-10-03
2026-10-03 | Elva · EST | Blitz | 19 |
| Tournoi des Fous - Caissargues 2026 | 2026-10-03
2026-10-03 | CAISSARGUES · FRA | Rapid | 69 |
| 9e Open Rapide du Grau du Roi | 2026-10-03
2026-10-03 | LE GRAU DU ROI · FRA | Rapid | 52 |
| 75th Greek National Championship 2026 | 2026-10-03
2026-10-11 | Psara · GRE | Classical | 10 |
| 32eme Memorial Albert Dethiou Rondes 3-6 | 2026-10-03
2026-10-24 | Bruxelles · BEL | Classical | 53 |
| XXXI Caloroczny Miedzynarodowy Festiwal Szachowy im. J. Dominika Gr C T1 | 2026-10-03
2026-10-03 | Dobczyce · POL | Rapid | 32 |
| XXXI Caloroczny Miedzynarodowy Festiwal Szachowy im. J. Dominika Gr B T1 | 2026-10-03
2026-10-04 | Dobczyce · POL | Classical | 57 |
| XXXI Caloroczny Miedzynarodowy Festiwal Szachowy im. J. Dominika Gr A T1 | 2026-10-03
2026-10-04 | Dobczyce · POL | Classical | 34 |
| International Children and Youth Chess Festival THE BALTIC WAY U-14-2026 | 2026-10-03
2026-10-04 | Riga · LAT | Rapid | 37 |
| International Children and Youth Chess Festival THE BALTIC WAY U-12-2026 | 2026-10-03
2026-10-04 | Riga · LAT | Rapid | 61 |
| International Children and Youth Chess Festival THE BALTIC WAY U-10-2026 | 2026-10-03
2026-10-04 | Riga · LAT | Rapid | 59 |
| International Children and Youth Chess Festival THE BALTIC WAY U-08-2026 | 2026-10-03
2026-10-04 | Riga · LAT | Rapid | 41 |
| Campeonato Provincial Individual Preferente Xeraco 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Xeraco (Valencia) · ESP | Classical | 9 |
| Campeonato Provincial Individual Preferente Basilio 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Valencia · ESP | Classical | 47 |
| Campeonato Provincial Individual Absoluto Basilio 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Valencia · ESP | Classical | 24 |
| Campeonato Provincial Individual Primera Elche 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Elche (Alicante) · ESP | Classical | 38 |
| Campeonato Provincial Individual Primera Alcoy 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Alcoy (Alicante) · ESP | Classical | 30 |
| Campeonato Provincial Individual Preferente Alcoy 2026 Rondas 3-5 | 2026-10-03
2026-10-24 | Alcoy (Alicante) · ESP | Classical | 23 |
| HUN Team Ch. Super League Szabo L Memorial 2026-27 R 1-2 | 2026-10-03
2026-10-04 | Hungary · HUN | Classical | 93 |
| OCTOBER 26 ELICHESS RAPID | 2026-10-03
2026-10-03 | Accra · GHA | Rapid | 22 |
| Championnat du Haut-Rhin 2026 - U12 | 2026-10-03
2026-10-03 | BENNWHIR · FRA | Classical | 43 |
| Championnat du Haut-Rhin 2026 - U14 | 2026-10-03
2026-10-03 | BENNWHIR · FRA | Classical | 38 |
| Championnat du Haut-Rhin 2026 - U16 | 2026-10-03
2026-10-03 | BENNWHIR · FRA | Classical | 35 |
| 2026 UK Open Blitz: Southampton Qualifier | 2026-10-03
2026-10-03 | Southampton · ENG | Blitz | 37 |
| 2026 UK Open Blitz: Liverpool Qualifier | 2026-10-03
2026-10-03 | Liverpool · ENG | Blitz | 33 |
| Romania National Team Championship 2026 - 1st League Open | 2026-10-03
2026-10-11 | Eforie Nord · ROU | Classical | 81 |
| 2026 SACA Labour Day Minor | 2026-10-03
2026-10-05 | Adelaide · AUS | Classical | 27 |
| 2026 SACA Labour Day Major | 2026-10-03
2026-10-05 | Adelaide · AUS | Classical | 21 |
| Fagernes International Autumn 2026 ELO-group | 2026-10-03
2026-10-11 | Fagernes · NOR | Classical | 35 |
| Fagernes International Autumn 2026 GM-group | 2026-10-03
2026-10-11 | Fagernes · NOR | Classical | 62 |
| 7e Tournoi de parties rapide de Vanves -2200 | 2026-10-03
2026-10-03 | VANVES · FRA | Rapid | 26 |
| Remstal-Open 2026 | 2026-10-03
2026-10-03 | Remshalden · GER | Rapid | 99 |
| V Obert d'Escacs de la Catalunya Central Grup B Rondas 2-4 | 2026-10-03
2026-10-24 | Catalunya · ESP | Classical | 57 |
| U1800 Marathon October 2026 | 2026-10-03
2026-10-04 | Budapest · HUN | Classical | 42 |