Grand Slam Final 4th Sao Paulo/Bilbao BRA/ESP· Sep 26 – Oct 11, 2011 | Sep 26 – Oct 11, 2011 | Classical | 6 | 2780 | 7 |
| RD-00056LSS· Oct 10 – 11, 2011 | Oct 10 – 11, 2011 | Classical | 6 | 1754 | 12 |
4. Final Masters Sao Paulo/Bilbao BRA/ESP· Sep 26 – Oct 11, 2011 | Sep 26 – Oct 11, 2011 | Classical | 6 | 2780 | 27 |
| RA-00156LSS· Sep 28 – Oct 11, 2011 | Sep 28 – Oct 11, 2011 | Classical | 7 | 2057 | 21 |
| SA-00220LSS· Oct 9 – 11, 2011 | Oct 9 – 11, 2011 | Classical | 7 | 2155 | 20 |
| RB-00140LSS· Oct 9 – 11, 2011 | Oct 9 – 11, 2011 | Classical | 7 | 1958 | 21 |
Continental Class Championship Arlington, VA USA· Oct 8 – 10, 2011 | Oct 8 – 10, 2011 | Classical | 7 | 2502 | 8 |
| RN-00413LSS· Oct 8 – 10, 2011 | Oct 8 – 10, 2011 | Classical | 6 | 1044 | 5 |
FSFMA Double Oct Budapest HUN· Oct 2 – 10, 2011 | Oct 2 – 10, 2011 | Classical | 6 | 2023 | 26 |
| FICGS__CHESS__CLASS_B__000158FICGS· Oct 10, 2011 | Oct 10, 2011 | Classical | 7 | 1808 | 21 |
| FICGS__CHESS__RAPID_B__000188FICGS· Oct 10, 2011 | Oct 10, 2011 | Classical | 7 | 1849 | 15 |
Juste pour jouer Montreal CAN· Oct 8 – 10, 2011 | Oct 8 – 10, 2011 | Classical | 6 | 1827 | 7 |
Quebec Ch Elite Montreal CAN· Oct 7 – 10, 2011 | Oct 7 – 10, 2011 | Classical | 33 | 2107 | 104 |
British Columbia Ch Burnaby CAN· Oct 7 – 10, 2011 | Oct 7 – 10, 2011 | Classical | 8 | 2185 | 28 |
Ch Canada women Toronto CAN· Oct 8 – 10, 2011 | Oct 8 – 10, 2011 | Classical | 11 | 1781 | 10 |
World Amateur Chess Championship Antalya TUR· Oct 2 – 10, 2011 | Oct 2 – 10, 2011 | Classical | 67 | 1853 | 266 |
Ch Belgrade (team) (Premijer liga) Belgrade SRB· Oct 4 – 10, 2011 | Oct 4 – 10, 2011 | Classical | 8 | 2169 | 5 |
Bedford Rating GpB Bedford USA· Oct 8 – 10, 2011 | Oct 8 – 10, 2011 | Classical | 11 | 1944 | 45 |
Continental Class Ch. Arlington, VA USA· Oct 6 – 10, 2011 | Oct 6 – 10, 2011 | Classical | 52 | 2219 | 135 |
FSIMB Oct Budapest HUN· Oct 2 – 10, 2011 | Oct 2 – 10, 2011 | Classical | 6 | 2281 | 28 |
15. ch-CAN women Toronto CAN· Oct 8 – 10, 2011 | Oct 8 – 10, 2011 | Classical | 16 | 1807 | 33 |
Bedford Rating GpA Bedford USA· Oct 8 – 10, 2011 | Oct 8 – 10, 2011 | Classical | 11 | 1984 | 44 |
| OP-01814LSS· Oct 10, 2011 | Oct 10, 2011 | Classical | 5 | 1438 | 7 |
Thanksgiving Open Toronto CAN· Oct 8 – 10, 2011 | Oct 8 – 10, 2011 | Classical | 26 | 2072 | 35 |
Your Next Move Blitz Leuven BEL· Oct 9, 2011 | Oct 9, 2011 | Blitz | 2 | 2755 | 7 |
British Columbia Ch women Burnaby CAN· Oct 9, 2011 | Oct 9, 2011 | Classical | 4 | 1849 | 5 |
It Open Forchheim GER· Oct 7 – 9, 2011 | Oct 7 – 9, 2011 | Classical | 7 | 2008 | 5 |
It Open Oslo NOR· Oct 2 – 9, 2011 | Oct 2 – 9, 2011 | Classical | 12 | 2272 | 10 |
| Kobanya Open· Oct 9, 2011 | Oct 9, 2011 | Classical | 7 | 1810 | 6 |
| OP-01812LSS· Oct 8 – 9, 2011 | Oct 8 – 9, 2011 | Classical | 5 | 1682 | 7 |
| RC-00082LSS· Oct 8 – 9, 2011 | Oct 8 – 9, 2011 | Classical | 7 | 1724 | 11 |
FSFMA Oct Budapest HUN· Oct 2 – 9, 2011 | Oct 2 – 9, 2011 | Classical | 10 | 2036 | 26 |
Asuncion PAR, Men Ch 2011 Asuncion PAR· Sep 23 – Oct 9, 2011 | Sep 23 – Oct 9, 2011 | Classical | 13 | 2146 | 28 |
TCh-AUT 2 West 2011-12 Absam AUT· Oct 7 – 9, 2011 | Oct 7 – 9, 2011 | Classical | 29 | 2299 | 35 |
TCh-POL Ekstraliga Katowice POL· Oct 7 – 9, 2011 | Oct 7 – 9, 2011 | Classical | 66 | 2405 | 91 |
10. Forchheim Open Forchheim GER· Oct 7 – 9, 2011 | Oct 7 – 9, 2011 | Classical | 178 | 1869 | 366 |
TCh-ISL Div1 2011-12 Reykjavik ISL· Oct 7 – 9, 2011 | Oct 7 – 9, 2011 | Classical | 78 | 2248 | 119 |
Oslo GM Open Oslo NOR· Oct 2 – 9, 2011 | Oct 2 – 9, 2011 | Classical | 59 | 2305 | 238 |
FSIMA Oct Budapest HUN· Oct 2 – 9, 2011 | Oct 2 – 9, 2011 | Classical | 10 | 2265 | 44 |
| Ch Sweden (team) 2011/12Sweden· Oct 7 – 9, 2011 | Oct 7 – 9, 2011 | Classical | 8 | 2272 | 5 |
XII Weekend A Nichelino ITA· Oct 6 – 9, 2011 | Oct 6 – 9, 2011 | Classical | 41 | 1881 | 99 |
Sofia BUL, 2. Sofia Open Ch Sofia BUL· Oct 4 – 9, 2011 | Oct 4 – 9, 2011 | Classical | 19 | 2221 | 43 |
TCh-AUT 2 West 2011-12 Salzburg AUT· Oct 7 – 9, 2011 | Oct 7 – 9, 2011 | Classical | 28 | 2196 | 36 |
e2e4 High Wycombe Open Uplands Park ENG· Sep 10 – Oct 9, 2011 | Sep 10 – Oct 9, 2011 | Classical | 53 | 2000 | 110 |
FSGM Oct Budapest HUN· Oct 2 – 9, 2011 | Oct 2 – 9, 2011 | Classical | 10 | 2400 | 42 |
Ch City Open Sofia BUL· Oct 3 – 9, 2011 | Oct 3 – 9, 2011 | Classical | 47 | 1982 | 61 |
Ch Croatia (team) (1. league) women Sibenik CRO· Sep 4 – Oct 9, 2011 | Sep 4 – Oct 9, 2011 | Classical | 28 | 2046 | 33 |
20. TCh-CRO women Sibenik CRO· Sep 4 – Oct 9, 2011 | Sep 4 – Oct 9, 2011 | Classical | 33 | 2022 | 62 |
TCh-SWE 2011-12 Malmo SWE· Oct 7 – 9, 2011 | Oct 7 – 9, 2011 | Classical | 85 | 2296 | 110 |
Natal BRA, Potiguar Open 2011 Natal BRA· Oct 2 – 8, 2011 | Oct 2 – 8, 2011 | Classical | 11 | 2137 | 20 |