26. Sigeman & Co 2021 Malmo SWE· Sep 23 – 29, 2021 | Sep 23 – 29, 2021 | Classical | 8 | 2636 | 26 |
Women's World Team Pool A Sitges ESP· Sep 27 – 29, 2021 | Sep 27 – 29, 2021 | Classical | 29 | 2333 | 60 |
Women's World Team Pool B Sitges ESP· Sep 27 – 29, 2021 | Sep 27 – 29, 2021 | Classical | 30 | 2379 | 55 |
SVK Ch 2021 Podhajska SVK· Sep 21 – 29, 2021 | Sep 21 – 29, 2021 | Classical | 10 | 2426 | 44 |
| T188-D00LSS· Sep 24 – 28, 2021 | Sep 24 – 28, 2021 | Classical | 8 | 1451 | 15 |
| FICGS__CHESS__RAPID_A__000275FICGS· Sep 28, 2021 | Sep 28, 2021 | Classical | 8 | 1870 | 27 |
Vera Menchik Mem Rapid Prague CZE· Sep 28, 2021 | Sep 28, 2021 | Rapid | 122 | 1861 | 281 |
| FICGS__CHESS__CLASS_B__000346FICGS· Sep 27, 2021 | Sep 27, 2021 | Classical | 5 | 1887 | 10 |
Joytu Sheikh Hasina GM Op Dhaka BAN· Sep 19 – 27, 2021 | Sep 19 – 27, 2021 | Classical | 68 | 2166 | 250 |
| We Jarvenpaa 2021· Sep 25 – 26, 2021 | Sep 25 – 26, 2021 | Classical | 8 | 1985 | 11 |
RA Fall Open Ottawa CAN· Sep 24 – 26, 2021 | Sep 24 – 26, 2021 | Classical | 14 | 1925 | 26 |
ch-Vienna State 2021 Vienna AUT· Sep 18 – 26, 2021 | Sep 18 – 26, 2021 | Classical | 10 | 2390 | 44 |
52. Italian Teams Final Montesilvano ITA· Sep 25 – 26, 2021 | Sep 25 – 26, 2021 | Classical | 50 | 2328 | 40 |
XV IRT Alicante 2021 Alicante ESP· Sep 24 – 26, 2021 | Sep 24 – 26, 2021 | Classical | 55 | 1919 | 71 |
Manx Liberty Masters 2021 Douglas ENG· Sep 18 – 26, 2021 | Sep 18 – 26, 2021 | Classical | 10 | 2531 | 45 |
CZE Ch 2021 Zlin CZE· Sep 18 – 26, 2021 | Sep 18 – 26, 2021 | Classical | 10 | 2530 | 45 |
Indy FIDE - Premier 2021 Indianapolis, IN USA· Sep 24 – 26, 2021 | Sep 24 – 26, 2021 | Classical | 30 | 1969 | 43 |
1. Prague Autumn Open Prague CZE· Sep 24 – 26, 2021 | Sep 24 – 26, 2021 | Classical | 71 | 1848 | 148 |
31. TCh-SLO 2021 Ljubljana SLO· Sep 10 – 26, 2021 | Sep 10 – 26, 2021 | Classical | 105 | 2034 | 257 |
| FICGS__CHESS__NO_ENGINES_TOURNAMENT__000117FICGS· Sep 26, 2021 | Sep 26, 2021 | Classical | 9 | 1888 | 27 |
| RA-00689LSS· Sep 20 – 25, 2021 | Sep 20 – 25, 2021 | Classical | 7 | 2000 | 21 |
| RM-00245LSS· Sep 19 – 25, 2021 | Sep 19 – 25, 2021 | Classical | 7 | 2223 | 21 |
4. Sharjah Masters 2021 Sharjah UAE· Sep 17 – 25, 2021 | Sep 17 – 25, 2021 | Classical | 67 | 2422 | 295 |
| ST-00200LSS· Sep 21 – 24, 2021 | Sep 21 – 24, 2021 | Classical | 8 | 2341 | 27 |
DSB Rising Stars GM 2021 Berlin GER· Sep 19 – 24, 2021 | Sep 19 – 24, 2021 | Classical | 11 | 2439 | 54 |
| FICGS__CHESS__RAPID_B__000368FICGS· Sep 24, 2021 | Sep 24, 2021 | Classical | 7 | 1809 | 15 |
52. Italian Teams GpB Montesilvano ITA· Sep 20 – 24, 2021 | Sep 20 – 24, 2021 | Classical | 46 | 2270 | 75 |
DSB Rising Stars IM 2021 Berlin GER· Sep 19 – 24, 2021 | Sep 19 – 24, 2021 | Classical | 10 | 2317 | 45 |
52. Italian Teams GpA Montesilvano ITA· Sep 20 – 24, 2021 | Sep 20 – 24, 2021 | Classical | 49 | 2256 | 83 |
36. ECC Open 2021 Struga MKD· Sep 18 – 24, 2021 | Sep 18 – 24, 2021 | Classical | 266 | 2288 | 823 |
36. ECC Women 2021 Struga MKD· Sep 18 – 24, 2021 | Sep 18 – 24, 2021 | Classical | 40 | 2314 | 111 |
| FICGS__CHESS__STANDARD_OPEN__000012FICGS· Sep 23, 2021 | Sep 23, 2021 | Classical | 5 | 1925 | 19 |
| QM-00111LSS· Sep 21 – 23, 2021 | Sep 21 – 23, 2021 | Classical | 4 | 2306 | 12 |
Vezerkepzo IM Sept 2021 Budapest HUN· Sep 15 – 23, 2021 | Sep 15 – 23, 2021 | Classical | 10 | 2170 | 39 |
Dov Porat Rapid A 2021 Ramat Gan ISR· Sep 22 – 23, 2021 | Sep 22 – 23, 2021 | Rapid | 29 | 2337 | 54 |
ch-LAT 2021 Riga LAT· Sep 17 – 23, 2021 | Sep 17 – 23, 2021 | Classical | 19 | 2089 | 32 |
Vezerkepzo GM Mix Sept Budapest HUN· Sep 15 – 23, 2021 | Sep 15 – 23, 2021 | Classical | 13 | 2325 | 48 |
| ST-00199LSS· Sep 21 – 22, 2021 | Sep 21 – 22, 2021 | Classical | 7 | 2169 | 21 |
| FICGS__CHESS__CLASS_A__000250FICGS· Sep 22, 2021 | Sep 22, 2021 | Classical | 6 | 2002 | 11 |
Panticapaeum Rapid 2021 Kerch RUS· Sep 21 – 22, 2021 | Sep 21 – 22, 2021 | Rapid | 35 | 1968 | 80 |
| T191-C65LSS· Sep 19 – 21, 2021 | Sep 19 – 21, 2021 | Classical | 6 | 1710 | 22 |
Panchenko Mem Open B 2021 Chelyabinsk RUS· Sep 13 – 21, 2021 | Sep 13 – 21, 2021 | Classical | 59 | 1986 | 270 |
Primorsko Open 2021 Primorsko BUL· Sep 13 – 21, 2021 | Sep 13 – 21, 2021 | Classical | 62 | 2062 | 138 |
Panchenko Mem Open A 2021 Chelyabinsk RUS· Sep 13 – 21, 2021 | Sep 13 – 21, 2021 | Classical | 150 | 2225 | 717 |
Panticapaeum Cup 2021 Kerch RUS· Sep 12 – 20, 2021 | Sep 12 – 20, 2021 | Classical | 19 | 2053 | 78 |
| FICGS__CHESS__CUP_CHAMPIONSHIP__000004FICGS· Sep 20, 2021 | Sep 20, 2021 | Classical | 34 | 2165 | 511 |
| OP-05189LSS· Sep 20, 2021 | Sep 20, 2021 | Classical | 5 | 1460 | 9 |
| OP-05188LSS· Sep 18 – 19, 2021 | Sep 18 – 19, 2021 | Classical | 4 | 1753 | 5 |
Hendon 2300 Plus London ENG· Sep 17 – 19, 2021 | Sep 17 – 19, 2021 | Classical | 8 | 2348 | 18 |
Barreau de Paris Elite Paris FRA· Sep 5 – 19, 2021 | Sep 5 – 19, 2021 | Classical | 6 | 2395 | 28 |