Montreal Ch Montreal CAN· Apr 4 – 19, 1970 | Apr 4 – 19, 1970 | Classical | 12 | 1625 | 13 |
British Universities Team ch Final D Manchester ENG· Apr 14 – 15, 1970 | Apr 14 – 15, 1970 | Classical | 18 | 1957 | 11 |
British Universities Team ch Final B Manchester ENG· Apr 14 – 15, 1970 | Apr 14 – 15, 1970 | Classical | 34 | 1945 | 23 |
British Universities Team ch Final A Manchester ENG· Apr 14 – 15, 1970 | Apr 14 – 15, 1970 | Classical | 45 | 2095 | 29 |
British Universities Team ch Final C Manchester ENG· Apr 14 – 15, 1970 | Apr 14 – 15, 1970 | Classical | 30 | 1904 | 17 |
British Universities Team ch Prelim C Manchester ENG· Apr 13, 1970 | Apr 13, 1970 | Classical | 36 | 2108 | 21 |
| Grossenbrode ttGrossenbrode· Apr 12 – 13, 1970 | Apr 12 – 13, 1970 | Classical | 7 | 2250 | 6 |
British Universities Team ch Prelim A Manchester ENG· Apr 13, 1970 | Apr 13, 1970 | Classical | 33 | 2045 | 22 |
British Universities Team ch Prelim B Manchester ENG· Apr 13, 1970 | Apr 13, 1970 | Classical | 34 | 1925 | 21 |
British Universities Team ch Prelim D Manchester ENG· Apr 13, 1970 | Apr 13, 1970 | Classical | 32 | 2007 | 19 |
British Universities Individual Ch Manchester ENG· Apr 6 – 11, 1970 | Apr 6 – 11, 1970 | Classical | 35 | 2038 | 72 |
Clare Benedict Paignton ENG· Apr 6 – 10, 1970 | Apr 6 – 10, 1970 | Classical | 22 | 2382 | 20 |
| Clare Benedict Cup 17thPaignton· Apr 6 – 10, 1970 | Apr 6 – 10, 1970 | Classical | 15 | 2327 | 12 |
| Clare BenedictPaignton· Apr 6 – 10, 1970 | Apr 6 – 10, 1970 | Classical | 15 | 2310 | 12 |
Wch blitz (unofficial) Herceg Novi MNE· Apr 8, 1970 | Apr 8, 1970 | Blitz | 8 | 2591 | 9 |
Herceg Novi blitz Herceg Novi MNE· Apr 8, 1970 | Apr 8, 1970 | Blitz | 12 | 2489 | 22 |
| Herceg Novi blitzHerceg Novi blitz· Apr 8, 1970 | Apr 8, 1970 | Blitz | 10 | 2599 | 17 |
Sarajevo 13th Sarajevo BIH· Mar 20 – Apr 7, 1970 | Mar 20 – Apr 7, 1970 | Classical | 9 | 2334 | 8 |
Sarajevo Sarajevo BIH Sarajevo Sarajevo BIH· Mar 20 – Apr 7, 1970 | Mar 20 – Apr 7, 1970 | Classical | 14 | 2369 | 50 |
| Clare Benedict, PaigntonClare Benedict, Paignton· Apr 6, 1970 | Apr 6, 1970 | Classical | 10 | 2393 | 8 |
| Concord OpenConcord· Apr 4 – 5, 1970 | Apr 4 – 5, 1970 | Classical | 6 | 2107 | 5 |
Belgrade URS-World Belgrade SRB· Mar 29 – Apr 2, 1970 | Mar 29 – Apr 2, 1970 | Classical | 19 | 1919 | 30 |
It, Rovinj/Zagreb CRO It, Rovinj/Zagreb CRO· 1970 | 1970 | Classical | 8 | 2248 | 6 |
UKR Ch Kiev UKR· 1970 | 1970 | Classical | 16 | 2289 | 16 |
Rovinj / Zagreb Rovinj/Zagreb CRO· 1970 | 1970 | Classical | 20 | 2192 | 103 |
| OWL ChMoeller Werke· 1970 | 1970 | Classical | 14 | 2097 | 76 |
Sarajevo Sarajevo BIH· Mar 22 – 31, 1970 | Mar 22 – 31, 1970 | Classical | 18 | 2297 | 36 |
| Danmarksmesterskabet 1970Flensburg· Mar 20 – 30, 1970 | Mar 20 – 30, 1970 | Classical | 12 | 2291 | 26 |
WLS Ch women Swansea WLS· Mar 26 – 30, 1970 | Mar 26 – 30, 1970 | Classical | 9 | 1727 | 15 |
| WECU-ch25Weymouth· Mar 26 – 30, 1970 | Mar 26 – 30, 1970 | Classical | 17 | 2051 | 16 |
Hungary Kecskemet HUN· Mar 19 – 30, 1970 | Mar 19 – 30, 1970 | Classical | 7 | 2267 | 5 |
Swansea ch-WLS Swansea ch-WLS· Mar 26 – 30, 1970 | Mar 26 – 30, 1970 | Classical | 25 | 1951 | 45 |
WLS Ch U18 Swansea WLS· Mar 26 – 30, 1970 | Mar 26 – 30, 1970 | Classical | 10 | 1961 | 16 |
ISL Ch Reykjavik ISL ISL-ch Reykjavik ISL· Mar 22 – 30, 1970 | Mar 22 – 30, 1970 | Classical | 12 | 2312 | 28 |
WLS Ch Swansea ch-WLS· Mar 26 – 30, 1970 | Mar 26 – 30, 1970 | Classical | 19 | 2000 | 17 |
WLS-chW+open Swansea WLS· Mar 26 – 30, 1970 | Mar 26 – 30, 1970 | Classical | 7 | 1439 | 6 |
Toronto Open Toronto CAN· Mar 27 – 29, 1970 | Mar 27 – 29, 1970 | Classical | 10 | 2033 | 7 |
| Icelandic Chess ChamIcelandic Chess Cham· Mar 21 – 29, 1970 | Mar 21 – 29, 1970 | Classical | 12 | 2312 | 20 |
ISL Ch Reykjavik ISL· Mar 21 – 28, 1970 | Mar 21 – 28, 1970 | Classical | 8 | 2354 | 13 |
| DkchFlensburg· Mar 21 – 27, 1970 | Mar 21 – 27, 1970 | Classical | 11 | 2277 | 10 |
Leeuwarden ch-NED Leeuwarden ch-NED· Mar 27, 1970 | Mar 27, 1970 | Classical | 13 | 2297 | 61 |
Sarajevo+ Sarajevo BIH Sarajevo+ Sarajevo BIH· Mar 24, 1970 | Mar 24, 1970 | Classical | 8 | 2356 | 7 |
Sarajevo BIH Sarajevo BIH· Mar 20 – 22, 1970 | Mar 20 – 22, 1970 | Classical | 8 | 2413 | 11 |
Toronto Closed reserves Toronto CAN· Jan 4 – Mar 11, 1970 | Jan 4 – Mar 11, 1970 | Classical | 7 | 1819 | 6 |
Villa Gesell Madariaga 5th Villa Gesell ARG· Mar 2 – 8, 1970 | Mar 2 – 8, 1970 | Classical | 27 | 2142 | 30 |
Villa Gesell tt Villa Gesell ARG· Mar 2 – 8, 1970 | Mar 2 – 8, 1970 | Classical | 29 | 2040 | 34 |
Ukraine-Berlin West m Kiev UKR· Feb 18 – Mar 4, 1970 | Feb 18 – Mar 4, 1970 | Classical | 16 | 2302 | 31 |
Match URS-World Belgrade SRB· 1970 | 1970 | Classical | 10 | 2155 | 5 |
USR - Wereld Belgrade SRB· 1970 | 1970 | Classical | 7 | 1835 | 8 |
Lugano II Lugano SUI· 1970 | 1970 | Classical | 6 | 2390 | 24 |