| Neanika_Attikis2013-K08· May 7 – 12, 2013 | May 7 – 12, 2013 | Classical | 8 | 1110 | 9 |
27. Metropolitan Qualifier Los Angeles, CA USA· May 10 – 12, 2013 | May 10 – 12, 2013 | Classical | 10 | 1992 | 7 |
6. Los Angeles USA, Metropolitan GM Los Angeles, CA USA· May 9 – 12, 2013 | May 9 – 12, 2013 | Classical | 3 | 2546 | 5 |
26. Metropolitan GM Los Angeles, CA USA· May 8 – 12, 2013 | May 8 – 12, 2013 | Classical | 6 | 2412 | 30 |
Wunsiedel GER, 7. Open Wunsiedel GER· May 9 – 12, 2013 | May 9 – 12, 2013 | Classical | 69 | 2235 | 119 |
2. Maremma Open Grosseto ITA· May 9 – 12, 2013 | May 9 – 12, 2013 | Classical | 32 | 2091 | 59 |
Kingston JAM, Men Ch 2013 Kingston JAM· Apr 26 – May 12, 2013 | Apr 26 – May 12, 2013 | Classical | 5 | 2036 | 10 |
Odense DEN, HC Andersen Open Odense DEN· May 10 – 12, 2013 | May 10 – 12, 2013 | Classical | 5 | 2558 | 8 |
Janske Lazne CZE, KHЕS Open Janske Lazne CZE· May 8 – 12, 2013 | May 8 – 12, 2013 | Classical | 10 | 2092 | 16 |
| 6o Pashalino Open TriandriasThessaloniki, Kokkino Ktirio· May 7 – 12, 2013 | May 7 – 12, 2013 | Classical | 7 | 1726 | 6 |
H.C Andersen Open Odense DEN· May 8 – 12, 2013 | May 8 – 12, 2013 | Classical | 13 | 2029 | 12 |
| Saint Louis USA, Men Championship· May 3 – 12, 2013 | May 3 – 12, 2013 | Classical | 18 | 2565 | 29 |
Santa Susanna ESP, Catalunya Ch (s) Santa Susanna ESP· May 5 – 12, 2013 | May 5 – 12, 2013 | Classical | 19 | 2091 | 43 |
USA Ch w 2013 Saint Louis USA· May 3 – 12, 2013 | May 3 – 12, 2013 | Classical | 9 | 2282 | 36 |
| SA-00345LSS· May 8 – 12, 2013 | May 8 – 12, 2013 | Classical | 7 | 2140 | 21 |
| Open Spring Nikeas-groupA· May 7 – 12, 2013 | May 7 – 12, 2013 | Classical | 21 | 1907 | 28 |
USA Ch 2013 Saint Louis USA· May 3 – 12, 2013 | May 3 – 12, 2013 | Classical | 26 | 2514 | 86 |
Ch USA women Saint Louis USA· May 3 – 12, 2013 | May 3 – 12, 2013 | Classical | 9 | 2245 | 8 |
Asian Zonal 3.1 2013 Doha QAT· May 4 – 12, 2013 | May 4 – 12, 2013 | Classical | 14 | 2351 | 63 |
5. Alexander The Great Open 2013 Porto Carras GRE· May 7 – 12, 2013 | May 7 – 12, 2013 | Classical | 34 | 2109 | 58 |
FSIMA May 2013 Budapest HUN· May 4 – 12, 2013 | May 4 – 12, 2013 | Classical | 10 | 2324 | 45 |
Bargteheide GER, Haspa Open 2013 Bargteheide GER· May 9 – 12, 2013 | May 9 – 12, 2013 | Classical | 43 | 2175 | 63 |
Novokuznetsk RUS, City Ch 2013 Novokuznetsk RUS· May 2 – 12, 2013 | May 2 – 12, 2013 | Classical | 12 | 2223 | 45 |
Tschaturanga Open 2013 Vienna AUT· May 6 – 12, 2013 | May 6 – 12, 2013 | Classical | 49 | 2037 | 90 |
Asian Zonal 3.1 w 2013 Doha QAT· May 4 – 12, 2013 | May 4 – 12, 2013 | Classical | 10 | 1923 | 44 |
SCT Seniors 2013 Stockholm SWE· May 9 – 12, 2013 | May 9 – 12, 2013 | Classical | 43 | 2168 | 53 |
HC Andersen Open 2013 Odense DEN· May 8 – 12, 2013 | May 8 – 12, 2013 | Classical | 56 | 2061 | 215 |
US Chess Championships Saint Louis USA· May 6 – 11, 2013 | May 6 – 11, 2013 | Classical | 8 | 2557 | 5 |
| CICL Playoffs 2013 DGCC vs DRWFermilab· May 11, 2013 | May 11, 2013 | Classical | 12 | 2079 | 6 |
| Neanika_Attikis2013-A10· May 7 – 11, 2013 | May 7 – 11, 2013 | Classical | 8 | 1361 | 6 |
| CICL Playoffs 2013 Rogue vs WombatsFermilab· May 11, 2013 | May 11, 2013 | Classical | 12 | 2000 | 6 |
| OP-02775LSS· May 10 – 11, 2013 | May 10 – 11, 2013 | Classical | 5 | 1843 | 9 |
Catalan Championship 2013 Barcelona ESP· May 4 – 11, 2013 | May 4 – 11, 2013 | Classical | 15 | 2421 | 37 |
Ste-Foy CC Ch Quebec CAN· Apr 27 – May 11, 2013 | Apr 27 – May 11, 2013 | Classical | 6 | 1855 | 9 |
| International Open Durres· May 5 – 11, 2013 | May 5 – 11, 2013 | Classical | 11 | 2490 | 36 |
Deltalift Open 2013 Halmstad SWE· May 9 – 11, 2013 | May 9 – 11, 2013 | Classical | 87 | 1981 | 120 |
| SENIOR DIVISION by A.s.o.p DIASPetroupoli· Jan 19 – May 11, 2013 | Jan 19 – May 11, 2013 | Classical | 24 | 1550 | 31 |
31. Liechtenstein Open 2013 Triesen LIE· May 3 – 11, 2013 | May 3 – 11, 2013 | Classical | 73 | 2110 | 205 |
| 8. Open S.O. Irakliou· May 6 – 10, 2013 | May 6 – 10, 2013 | Classical | 26 | 1654 | 36 |
Oceania zt w 2013 Nadi FIJ· May 5 – 10, 2013 | May 5 – 10, 2013 | Classical | 15 | 1805 | 60 |
Oceania Open zt 2013 Nadi FIJ· May 5 – 10, 2013 | May 5 – 10, 2013 | Classical | 41 | 1952 | 163 |
ch-KGZ Women 2013 Bishkek KGZ· May 2 – 9, 2013 | May 2 – 9, 2013 | Classical | 18 | 1633 | 67 |
| FICGS__CHESS__RAPID_B__000206FICGS· May 8, 2013 | May 8, 2013 | Classical | 7 | 1779 | 15 |
| OP-02771LSS· May 8, 2013 | May 8, 2013 | Classical | 5 | 1924 | 10 |
Zonal women Cairo EGY· Apr 30 – May 7, 2013 | Apr 30 – May 7, 2013 | Classical | 8 | 1760 | 18 |
Koge 3+ EMT 2013 Koge DEN· Feb 12 – May 7, 2013 | Feb 12 – May 7, 2013 | Classical | 8 | 1873 | 17 |
| SC-00184LSS· May 6 – 7, 2013 | May 6 – 7, 2013 | Classical | 7 | 1700 | 11 |
| CICL Playoffs 2013Rogue· May 7, 2013 | May 7, 2013 | Classical | 12 | 1910 | 6 |
Zone 4.2 2013 Cairo EGY· Apr 30 – May 7, 2013 | Apr 30 – May 7, 2013 | Classical | 10 | 2265 | 40 |
| SB-00304LSS· May 2 – 7, 2013 | May 2 – 7, 2013 | Classical | 7 | 1816 | 21 |