96th ch-GER Masters 2025 Munich GER· May 15 – 23, 2025 | May 15 – 23, 2025 | Classical | 11 | 2602 | 40 |
96th ch-GER Candidates Munich GER· May 17 – 23, 2025 | May 17 – 23, 2025 | Classical | 32 | 2268 | 134 |
| German Championship Masters 2025 | Open· May 20 – 22, 2025 | May 20 – 22, 2025 | Classical | 9 | 2605 | 6 |
| German Championship Masters 2025 | women· May 20 – 22, 2025 | May 20 – 22, 2025 | Classical | 6 | 2237 | 5 |
| German Championship Candidates 2025 | women· May 17 – 22, 2025 | May 17 – 22, 2025 | Classical | 24 | 1940 | 49 |
| Prague International Chess Festival 2025 | OpenPrague, Czech Republic· Feb 27 – May 22, 2025 | Feb 27 – May 22, 2025 | Blitz | 65 | 2319 | 68 |
| German Championship Candidates 2025 | Open· May 19 – 22, 2025 | May 19 – 22, 2025 | Classical | 31 | 2291 | 35 |
2025 Türkiye Küçükler ve Yıldızlar Satranç Şampiyonası | 9-18 Yaş Antalya TUR· Jan 19 – May 22, 2025 | Jan 19 – May 22, 2025 | Classical | 158 | 1779 | 96 |
Mitropa Cup Women 2025 Trencin SVK· May 14 – 22, 2025 | May 14 – 22, 2025 | Classical | 48 | 2128 | 179 |
Mitropa Cup 2025 Trencin SVK· May 14 – 22, 2025 | May 14 – 22, 2025 | Classical | 47 | 2389 | 179 |
| 5ème Tournoi du mardi à Laval Canada 2025 | Section A· Apr 30 – May 21, 2025 | Apr 30 – May 21, 2025 | Blitz | 10 | 1781 | 11 |
| Mitropa Cup 2025 | Open· May 19 – 21, 2025 | May 19 – 21, 2025 | Classical | 31 | 2405 | 20 |
| Marshall Masters 2025 | May· May 21, 2025 | May 21, 2025 | Classical | 14 | 2134 | 12 |
| Mitropa Cup 2025 | women· May 19 – 21, 2025 | May 19 – 21, 2025 | Classical | 31 | 2132 | 21 |
| Svarta Hästen Vårblixt 2025· May 4 – 20, 2025 | May 4 – 20, 2025 | Blitz | 13 | 2345 | 16 |
| Czech Youth Championship 2025 | h16Kouty nad Desnou, Czech Republic· Mar 8 – May 20, 2025 | Mar 8 – May 20, 2025 | Classical | 25 | 2036 | 50 |
| 2025 African Individual Chess Championships | Open· May 13 – 20, 2025 | May 13 – 20, 2025 | Classical | 46 | 2153 | 34 |
| Sällskapets KM 2025· Jan 21 – May 20, 2025 | Jan 21 – May 20, 2025 | Blitz | 31 | 1998 | 31 |
| 2025 African Individual Chess Championships | women· May 13 – 20, 2025 | May 13 – 20, 2025 | Classical | 24 | 1778 | 29 |
ch-Africa 2025 Kerdasa EGY· May 13 – 20, 2025 | May 13 – 20, 2025 | Classical | 48 | 2123 | 50 |
ch-Africa Women 2025 Kerdasa EGY· May 13 – 20, 2025 | May 13 – 20, 2025 | Classical | 24 | 1778 | 56 |
58. Capablanca Mem Elite Havana CUB· May 10 – 19, 2025 | May 10 – 19, 2025 | Classical | 5 | 2607 | 20 |
| SixDays Budapest May IMBBudapest· May 14 – 19, 2025 | May 14 – 19, 2025 | Classical | 10 | 2243 | 9 |
96. ch-GER Candidates Munich GER· May 17 – 19, 2025 | May 17 – 19, 2025 | Classical | 33 | 2289 | 50 |
96. ch-GER Masters 2025 Munich GER· May 15 – 19, 2025 | May 15 – 19, 2025 | Classical | 10 | 2603 | 25 |
| LVIII Internacional Capablanca in Memoriam | Open Magistral· May 18 – 19, 2025 | May 18 – 19, 2025 | Blitz | 8 | 2425 | 5 |
58th Capablanca Mem Elite Havana CUB· May 10 – 19, 2025 | May 10 – 19, 2025 | Classical | 5 | 2607 | 20 |
SixDays Budapest May GM Budapest HUN· May 14 – 19, 2025 | May 14 – 19, 2025 | Classical | 11 | 2405 | 51 |
SixDays Budapest May IMA Budapest HUN· May 14 – 19, 2025 | May 14 – 19, 2025 | Classical | 10 | 2242 | 44 |
| ACC Monday Nights 2025 | Autumn· Mar 31 – May 19, 2025 | Mar 31 – May 19, 2025 | Blitz | 17 | 1921 | 12 |
SixDays Budapest May IMB Budapest HUN· May 14 – 19, 2025 | May 14 – 19, 2025 | Classical | 10 | 2243 | 45 |
GER Ch Women 2025 Munich GER· May 15 – 19, 2025 | May 15 – 19, 2025 | Classical | 10 | 2246 | 25 |
| Mongolia Amateurs Open 2025· May 16 – 18, 2025 | May 16 – 18, 2025 | Classical | 12 | 1659 | 8 |
| Arie Nijman Memorial 2025· May 16 – 18, 2025 | May 16 – 18, 2025 | Blitz | 19 | 1888 | 21 |
15. WLC Weekender 2025 Eindhoven NED· May 16 – 18, 2025 | May 16 – 18, 2025 | Classical | 69 | 2049 | 182 |
| WLC Weekend Tournament 2025 | Group B· May 16 – 18, 2025 | May 16 – 18, 2025 | Blitz | 26 | 1782 | 27 |
| 2025 Marshall Monthly U2400 | May· May 17 – 18, 2025 | May 17 – 18, 2025 | Blitz | 29 | 1920 | 23 |
| 100º Semifinal del Campeonato Argentino de Ajedrez - Mar de Ajó· May 13 – 18, 2025 | May 13 – 18, 2025 | Blitz | 26 | 2249 | 22 |
Thess-Chalk Team Final 4 Thessaloniki GRE· May 17 – 18, 2025 | May 17 – 18, 2025 | Classical | 20 | 2115 | 16 |
Ostravsky Konik Open A Ostrava CZE· May 10 – 18, 2025 | May 10 – 18, 2025 | Classical | 25 | 2194 | 52 |
| RLP-Schnellschachmeisterschaft Neuwied 2025· May 18, 2025 | May 18, 2025 | Rapid | 25 | 2041 | 49 |
| 4to IRT Centro Comercial AV. Chile· May 18, 2025 | May 18, 2025 | Blitz | 111 | 1778 | 231 |
| Caplin Hastings Weekend 2025 | IntermediateHorntye Park, Hastings, United Kingdom· Jan 4 – May 18, 2025 | Jan 4 – May 18, 2025 | Blitz | 33 | 1652 | 32 |
Africa Ch 2025 Kerdasa EGY· May 13 – 18, 2025 | May 13 – 18, 2025 | Classical | 54 | 2123 | 137 |
15th WLC Weekender 2025 Eindhoven NED· May 16 – 18, 2025 | May 16 – 18, 2025 | Classical | 68 | 2005 | 176 |
| Torneo Universitario FEDEU-CENFOTEC 2025 | Femenino· May 17, 2025 | May 17, 2025 | Blitz | 8 | 1652 | 8 |
| Campeonato Centroamericano y del Caribe U20 | Femenino· May 12 – 17, 2025 | May 12 – 17, 2025 | Blitz | 7 | 2247 | 7 |
| Tunnelvision XXXII· May 17, 2025 | May 17, 2025 | Blitz | 14 | 1911 | 9 |
| Torneo Universitario FEDEU-CENFOTEC 2025 | Absoluto· May 17, 2025 | May 17, 2025 | Blitz | 16 | 1751 | 14 |
| Auckland Double Weekends 2025 | May· May 9 – 17, 2025 | May 9 – 17, 2025 | Blitz | 19 | 1737 | 16 |