New York Spring IMB 2025 New York USA· Mar 27 – 31, 2025 | Mar 27 – 31, 2025 | Classical | 9 | 2230 | 36 |
| Alberta Closed 2025· Mar 29 – 30, 2025 | Mar 29 – 30, 2025 | Blitz | 6 | 2162 | 6 |
| Campeonato Estatal Absoluto Oaxaca 2025· Mar 28 – 30, 2025 | Mar 28 – 30, 2025 | Blitz | 11 | 1858 | 7 |
| 2025 Charlotte Spring Open· Mar 28 – 30, 2025 | Mar 28 – 30, 2025 | Blitz | 18 | 2026 | 13 |
Charlotte Spring Open Charlotte USA· Mar 28 – 30, 2025 | Mar 28 – 30, 2025 | Classical | 17 | 2141 | 15 |
| Campeonato Nacional Senior Costa Rica 2025Comité Olímpico Nacional, Coronado, Costa Rica· Mar 22 – 30, 2025 | Mar 22 – 30, 2025 | Blitz | 25 | 1751 | 48 |
| 2. Austrian Bundesliga West 2024-25· Mar 28 – 30, 2025 | Mar 28 – 30, 2025 | Classical | 66 | 2203 | 55 |
| Danish Team Chess Championship 2024-25· Jan 25 – Mar 30, 2025 | Jan 25 – Mar 30, 2025 | Classical | 94 | 2277 | 69 |
RUS Ch Junior 2025 Barnaul RUS· Mar 22 – 30, 2025 | Mar 22 – 30, 2025 | Classical | 10 | 2164 | 42 |
RUS Ch Junior Girls 2025 Barnaul RUS· Mar 22 – 30, 2025 | Mar 22 – 30, 2025 | Classical | 10 | 2136 | 45 |
| Austrian Women's Bundesliga 2024-25· Feb 28 – Mar 30, 2025 | Feb 28 – Mar 30, 2025 | Classical | 53 | 2107 | 57 |
| 2025 Spring NYC Chess Norms | Scheveningen· Mar 26 – 30, 2025 | Mar 26 – 30, 2025 | Blitz | 10 | 2048 | 16 |
China zt 3.5 Women 2025 Ji'an CHN· Mar 22 – 30, 2025 | Mar 22 – 30, 2025 | Classical | 30 | 2046 | 128 |
China Zonal 3.5 2025 Ji'an CHN· Mar 22 – 30, 2025 | Mar 22 – 30, 2025 | Classical | 44 | 2285 | 206 |
TCh-LTU 2025 Lithuania LTU· Jan 24 – Mar 30, 2025 | Jan 24 – Mar 30, 2025 | Classical | 80 | 2110 | 165 |
62. TCh-DEN Ex 2024-25 Denmark DEN· Jan 25 – Mar 30, 2025 | Jan 25 – Mar 30, 2025 | Classical | 100 | 2261 | 87 |
TCh-CZE Extraliga 2024-25 Czech Republic CZE· Jan 25 – Mar 30, 2025 | Jan 25 – Mar 30, 2025 | Classical | 154 | 2391 | 317 |
| Czech Extraliga 2024-2025· Jan 25 – Mar 30, 2025 | Jan 25 – Mar 30, 2025 | Classical | 131 | 2410 | 145 |
62nd TCh-DEN Ex 2024-25 Denmark DEN· Jan 25 – Mar 30, 2025 | Jan 25 – Mar 30, 2025 | Classical | 117 | 2238 | 158 |
SixDays Budapest March 2025 | IM C Budapest HUN· Mar 24 – 29, 2025 | Mar 24 – 29, 2025 | Blitz | 10 | 2243 | 18 |
SixDays Budapest March 2025 | IM A Budapest HUN· Mar 24 – 29, 2025 | Mar 24 – 29, 2025 | Blitz | 9 | 2229 | 17 |
| Copa Liceo Freinet 2025· Mar 29, 2025 | Mar 29, 2025 | Blitz | 34 | 1660 | 37 |
| Mongolia Corporations ALTAN BERSI Cup 2025· Mar 28 – 29, 2025 | Mar 28 – 29, 2025 | Blitz | 19 | 2214 | 15 |
SixDays Budapest March 2025 | GM B Budapest HUN· Mar 24 – 29, 2025 | Mar 24 – 29, 2025 | Blitz | 10 | 2399 | 16 |
| Kazakhstan Cadet and Junior Chess Championship 2025 | Blitz G14· Jan 25 – Mar 29, 2025 | Jan 25 – Mar 29, 2025 | Blitz | 22 | 1725 | 19 |
SixDays Budapest March 2025 | GM A Budapest HUN· Mar 24 – 29, 2025 | Mar 24 – 29, 2025 | Blitz | 9 | 2393 | 17 |
| 2025 UToronto vs UWaterloo Match | RapidToronto, Ontario, Canada, Canada· Mar 29, 2025 | Mar 29, 2025 | Rapid | 9 | 1965 | 5 |
| 18. Tashkent Open - Agzamov Memorial | Group A· Mar 20 – 29, 2025 | Mar 20 – 29, 2025 | Blitz | 51 | 2410 | 49 |
| 2025 UToronto vs UWaterloo Match | BlitzToronto, Ontario, Canada, Canada· Mar 29, 2025 | Mar 29, 2025 | Blitz | 22 | 1912 | 44 |
| NRW-Blitz-Einzelmeisterschaft 2025Halle (Westf.), Germany· Jan 23 – Mar 29, 2025 | Jan 23 – Mar 29, 2025 | Blitz | 19 | 2172 | 47 |
SixDays Budapest March 2025 | IM B Budapest HUN· Mar 24 – 29, 2025 | Mar 24 – 29, 2025 | Blitz | 9 | 2237 | 12 |
| 12. Indian Amateur Chess ChampionshipBodhgaya, Bihar, India, India· Mar 25 – 29, 2025 | Mar 25 – 29, 2025 | Blitz | 50 | 1826 | 49 |
SixDays Budapest IMA Mar Budapest HUN· Mar 24 – 29, 2025 | Mar 24 – 29, 2025 | Classical | 10 | 2229 | 43 |
SixDays Budapest GMB Mar Budapest HUN· Mar 24 – 29, 2025 | Mar 24 – 29, 2025 | Classical | 10 | 2399 | 43 |
18th Agzamov Mem 2025 Tashkent UZB· Mar 20 – 29, 2025 | Mar 20 – 29, 2025 | Classical | 77 | 2351 | 132 |
| 18. Tashkent Open - Agzamov Memorial | Group B· Mar 20 – 29, 2025 | Mar 20 – 29, 2025 | Blitz | 52 | 1796 | 45 |
SixDays Budapest IMC Mar Budapest HUN· Mar 24 – 29, 2025 | Mar 24 – 29, 2025 | Classical | 10 | 2123 | 39 |
SixDays Budapest GMA Mar Budapest HUN· Mar 24 – 29, 2025 | Mar 24 – 29, 2025 | Classical | 10 | 2318 | 42 |
SixDays Budapest IMB Mar Budapest HUN· Mar 24 – 29, 2025 | Mar 24 – 29, 2025 | Classical | 10 | 2238 | 38 |
| FIDE World School Chess Championships 2025 | G13· Mar 20 – 28, 2025 | Mar 20 – 28, 2025 | Blitz | 15 | 1721 | 20 |
| FIDE World School Chess Championships 2025 | G17· Feb 16 – Mar 28, 2025 | Feb 16 – Mar 28, 2025 | Blitz | 20 | 1833 | 19 |
18. Agzamov Mem 2025 Tashkent UZB· Mar 20 – 28, 2025 | Mar 20 – 28, 2025 | Classical | 36 | 2425 | 25 |
| FIDE World School Chess Championships 2025 | O11· Mar 20 – 28, 2025 | Mar 20 – 28, 2025 | Blitz | 24 | 1841 | 21 |
| FIDE World School Chess Championships 2025 | O17· Mar 20 – 28, 2025 | Mar 20 – 28, 2025 | Blitz | 25 | 2000 | 31 |
| FIDE World School Chess Championships 2025 | O13· Jan 19 – Mar 28, 2025 | Jan 19 – Mar 28, 2025 | Blitz | 26 | 2006 | 27 |
| FIDE World School Chess Championships 2025 | O15· Mar 19 – 28, 2025 | Mar 19 – 28, 2025 | Blitz | 27 | 1996 | 28 |
World Schools U17 2025 Vrnjacka Banja SRB· Mar 20 – 28, 2025 | Mar 20 – 28, 2025 | Classical | 27 | 1982 | 71 |
40. ChessOrg Open Bad Woerishofen GER· Mar 21 – 27, 2025 | Mar 21 – 27, 2025 | Classical | 48 | 2204 | 64 |
| FIDE World School Chess Championships 2025 | G15· Mar 20 – 27, 2025 | Mar 20 – 27, 2025 | Blitz | 18 | 1879 | 21 |
40th ChessOrg Open Bad Woerishofen GER· Mar 21 – 27, 2025 | Mar 21 – 27, 2025 | Classical | 44 | 2173 | 58 |