| 4NCL Division Three KnightsPeterborough· Jan 11 – Apr 13, 2025 | Jan 11 – Apr 13, 2025 | Classical | 105 | 1965 | 141 |
| EUROPEAN SENIOR TEAM CHESS CHAMPIONSHIP | 65+· Apr 5 – 12, 2025 | Apr 5 – 12, 2025 | Classical | 21 | 2025 | 13 |
| Columbus Energy Polish Amateur Championship 2025 - 2200 FIDESianozety· Jan 19 – Apr 12, 2025 | Jan 19 – Apr 12, 2025 | Blitz | 9 | 2131 | 8 |
| Columbus Energy Polish Amateur Championship 2025 - 1600 FIDESianozety· Apr 5 – 12, 2025 | Apr 5 – 12, 2025 | Blitz | 22 | 1530 | 13 |
Jersey International 2025 St Clement Bay JCI· Apr 5 – 12, 2025 | Apr 5 – 12, 2025 | Classical | 17 | 2110 | 77 |
FSIM April 2025 Budapest HUN· Apr 5 – 12, 2025 | Apr 5 – 12, 2025 | Classical | 10 | 2244 | 43 |
FSGM April 2025 Budapest HUN· Apr 5 – 12, 2025 | Apr 5 – 12, 2025 | Classical | 11 | 2417 | 47 |
| LJEM 2025 - Niedersachsen - Open· Apr 11, 2025 | Apr 11, 2025 | Classical | 7 | 1605 | 7 |
25. ch-EUR Indiv w 2025 Rhodes GRE· Mar 31 – Apr 11, 2025 | Mar 31 – Apr 11, 2025 | Classical | 134 | 2154 | 325 |
| FIDE World Junior Chess Championship 2025 | Girls· Feb 25 – Apr 11, 2025 | Feb 25 – Apr 11, 2025 | Classical | 99 | 2097 | 202 |
25th ch-EUR Indiv w 2025 Rhodes GRE· Mar 31 – Apr 11, 2025 | Mar 31 – Apr 11, 2025 | Classical | 136 | 2142 | 675 |
| EUROPEAN SENIOR TEAM CHESS CHAMPIONSHIP | 50+· Apr 5 – 10, 2025 | Apr 5 – 10, 2025 | Classical | 16 | 2090 | 9 |
| Israeli Youth Championships 2025 | U14· Apr 4 – 10, 2025 | Apr 4 – 10, 2025 | Blitz | 6 | 1946 | 5 |
| 4e Tournoi du mardi à Laval 2024-2025 | Section BCentre Communautaire St-Louis-de-Montfort 25 Rue St Louis, Laval, Québec, H7G 4W3· Mar 12 – Apr 9, 2025 | Mar 12 – Apr 9, 2025 | Blitz | 9 | 1656 | 8 |
| Israeli Youth Championships 2025 | U12· Apr 4 – 9, 2025 | Apr 4 – 9, 2025 | Blitz | 7 | 1844 | 5 |
| 4e Tournoi du mardi à Laval 2024-2025 | Section ACentre Communautaire St-Louis-de-Montfort 25 Rue St Louis, Laval, Québec, H7G 4W3· Mar 12 – Apr 9, 2025 | Mar 12 – Apr 9, 2025 | Blitz | 8 | 1832 | 9 |
| Jersey International Festival 2025· Apr 5 – 9, 2025 | Apr 5 – 9, 2025 | Blitz | 14 | 2042 | 8 |
Zonal 3.4 Women 2025 Almaty KAZ· Apr 2 – 9, 2025 | Apr 2 – 9, 2025 | Classical | 43 | 1936 | 176 |
Zonal 3.4 2025 Almaty KAZ· Apr 2 – 9, 2025 | Apr 2 – 9, 2025 | Classical | 89 | 2173 | 375 |
| 2025 Melbourne International Open | RapidMelbourne, Australia· Apr 9, 2025 | Apr 9, 2025 | Rapid | 8 | 2049 | 8 |
3. FAOGBA Open 2025 Buenos Aires ARG· Apr 2 – 8, 2025 | Apr 2 – 8, 2025 | Classical | 33 | 2225 | 62 |
| 2. Fingal Open Championships Ireland· Jan 7 – Apr 8, 2025 | Jan 7 – Apr 8, 2025 | Classical | 10 | 1770 | 6 |
| 2025 South Australian Championship· Feb 4 – Apr 8, 2025 | Feb 4 – Apr 8, 2025 | Blitz | 9 | 1961 | 15 |
| Zone 4.2 (West Africa) Chess Championship 2025 | Open· Apr 2 – 8, 2025 | Apr 2 – 8, 2025 | Blitz | 30 | 1974 | 52 |
| 25. European Women's Chess Championship 2025· Mar 31 – Apr 8, 2025 | Mar 31 – Apr 8, 2025 | Classical | 127 | 2161 | 151 |
3rd FAOGBA Open 2025 Buenos Aires ARG· Apr 3 – 8, 2025 | Apr 3 – 8, 2025 | Classical | 26 | 2251 | 33 |
| Final del Campeonato Nacional Mayores Bolivia 2025 | Absoluto· Apr 2 – 6, 2025 | Apr 2 – 6, 2025 | Classical | 10 | 2172 | 20 |
ch-CYP 2025 Larnaka CYP· Apr 5 – 6, 2025 | Apr 5 – 6, 2025 | Classical | 12 | 1953 | 7 |
| 2025 Marshall Premier FIDE | April· Apr 4 – 6, 2025 | Apr 4 – 6, 2025 | Blitz | 13 | 2087 | 8 |
College Final Four 2025 Richardson USA· Apr 5 – 6, 2025 | Apr 5 – 6, 2025 | Classical | 19 | 2436 | 24 |
| 2. Austrian Bundesliga Mitte 2024-25· Apr 4 – 6, 2025 | Apr 4 – 6, 2025 | Classical | 36 | 2227 | 21 |
Chestnut Horse Open Final Kyiv UKR· Apr 6, 2025 | Apr 6, 2025 | Classical | 11 | 2217 | 10 |
RUDAR 37 IM 2025 Pozarevac SRB· Mar 30 – Apr 6, 2025 | Mar 30 – Apr 6, 2025 | Classical | 11 | 2258 | 51 |
| ASCUN NODO BOGOTA Abril 2025 | Rapido· Apr 5 – 6, 2025 | Apr 5 – 6, 2025 | Rapid | 56 | 1742 | 111 |
Chestnut Horse Open Final Kiev UKR· Apr 6, 2025 | Apr 6, 2025 | Classical | 11 | 2299 | 52 |
| 4NCL Division TwoPeterborough· Jan 25 – Apr 6, 2025 | Jan 25 – Apr 6, 2025 | Classical | 139 | 2094 | 196 |
TCh-AUT 2024-25 Austria AUT· Apr 2 – 6, 2025 | Apr 2 – 6, 2025 | Classical | 98 | 2401 | 216 |
13. Int Senioren-Cup Rottach-Egern GER· Mar 29 – Apr 6, 2025 | Mar 29 – Apr 6, 2025 | Classical | 154 | 1894 | 355 |
RUDAR 18 GM 2025 Pozarevac SRB· Mar 30 – Apr 6, 2025 | Mar 30 – Apr 6, 2025 | Classical | 10 | 2394 | 44 |
| 4NCL Division OnePeterborough· Jan 25 – Apr 6, 2025 | Jan 25 – Apr 6, 2025 | Classical | 129 | 2261 | 197 |
| 4NCL Division Three BishopsPeterborough· Jan 11 – Apr 6, 2025 | Jan 11 – Apr 6, 2025 | Classical | 122 | 1943 | 213 |
13th Int Senioren-Cup Rottach-Egern GER· Mar 29 – Apr 6, 2025 | Mar 29 – Apr 6, 2025 | Classical | 149 | 1884 | 377 |
| 2025 South Carolina Scholastic National Qualifier Invitational· Apr 5, 2025 | Apr 5, 2025 | Blitz | 7 | 1859 | 5 |
| Final del Campeonato Nacional Mayores Bolivia 2025 | Femenino· Apr 2 – 5, 2025 | Apr 2 – 5, 2025 | Classical | 7 | 1840 | 7 |
| 13. Internationaler Schach-Senioren-Cup am Tegernsee 2025· Mar 29 – Apr 5, 2025 | Mar 29 – Apr 5, 2025 | Blitz | 45 | 2110 | 40 |
| Olimpiada Nacional Fase Macroregional A Chihuahua· Apr 4 – 5, 2025 | Apr 4 – 5, 2025 | Blitz | 16 | 1793 | 10 |
| Robert Spångbergs Minnesturnering 2025· Apr 5, 2025 | Apr 5, 2025 | Blitz | 18 | 1967 | 22 |
| ASIAN ZONAL CHESS CHAMPIONSHIPS ZONE 3.4 | women· Mar 31 – Apr 5, 2025 | Mar 31 – Apr 5, 2025 | Classical | 38 | 1968 | 36 |
| Guyana National Women's championshipsDavid Rose School, Guyana· Mar 22 – Apr 5, 2025 | Mar 22 – Apr 5, 2025 | Blitz | 10 | 1471 | 28 |
PNWCC IM Norm RR Apr Bellevue, WA USA· Apr 2 – 5, 2025 | Apr 2 – 5, 2025 | Classical | 10 | 2289 | 45 |