Previous IChOs
Year |
No |
Host Nations |
Number of Participating Countries |
Number of Observing Countries |
||
1968 |
1 st |
Prague, Czechoslovakia |
3 |
- |
IChO 2006 Korea: |
|
1969 |
2 nd |
Katowice, Poland |
4 |
- |
||
1970 |
3 rd |
Budapest, Hungary |
7 |
- |
||
1972 |
4 th |
Moscow, Soviet Union |
7 |
- |
||
1973 |
5 th |
Sofia, Bulgaria |
7 |
- |
||
1974 |
6 th |
Bucharest, Romania |
9 |
2 |
IChO 2005 Taiwan: |
|
1975 |
7 th |
Veszprem, Hungary |
12 |
- |
||
1976 |
8 th |
Halle, GDR |
12 |
- |
||
1977 |
9 th |
Bratislava, Czechoslovakia |
12 |
2 |
||
1978 |
10 th |
Torun, Poland |
12 |
1 |
||
1979 |
11 th |
Leningrad, Soviet Union |
11 |
- |
IChO 2004 Germany: |
|
1980 |
12 th |
Linz, Austria |
13 |
3 |
||
1981 |
13 th |
Burgas, Bulgaria |
14 |
1 |
||
1982 |
14 th |
Stockholm, Sweden |
17 |
3 |
||
1983 |
15 th |
Timisoara, Romania |
18 |
2 |
||
1984 |
16 th |
Frankfurt, West-Germany |
21 |
- |
IChO 2003 Greece: |
|
1985 |
17 th |
Bratislava, Czechoslovakia |
22 |
1 |
||
1986 |
18 th |
Leiden, The Netherlands |
23 |
4 |
||
1987 |
19 th |
Veszprem, Hungary |
26 |
2 |
||
1988 |
20 th |
Espoo, Finland |
29 |
- |
||
1989 |
21st |
Halle, GDR |
26 |
3 |
IChO 2002 The Netherlands |
|
1990 |
22 nd |
Paris, France |
28 |
- |
||
1991 |
23 rd |
Lodz, Poland |
30 |
2 |
||
1992 |
24 th |
Pittsburgh, USA |
33 |
- |
||
1993 |
25 th |
Perugia, Italy |
38 |
- |
||
1994 |
26 th |
Oslo, Norway |
39 |
4 |
IChO 2001 India: |
|
1995 |
27 th |
Beijing, China |
42 |
5 |
||
1996 |
28 th |
Moscow, Russian Federation |
45 |
3 |
||
1997 |
29 th |
Montreal, Canada |
47 |
6 |
||
1998 |
30 th |
Melbourne, Australia |
47 |
3 |
||
1999 |
31 st |
Bangkok, Thailand |
52 |
- |
IChO 2000 Denmark |
|
2000 |
32 nd |
Copenhagen, Denmark |
53 |
- |
||
2001 |
33 rd |
54 |
- |
|||
2002 |
34 th |
Groningen, The Netherlands |
57 |
9 |
||
2003 |
35 th |
60 |
7 |
|||
2004 |
36 th |
61 |
7 |
|||
2005 |
37 th |
59 |
6 |
|||
2006 |
38 th |
66 |
1 |
|||
2007 |
39 th |
68 |
1 |
|||
2008 |
40 th |
|
|
|||
2009 |
41 st |
United Kingdom |
|
|
||
2010 |
42 nd |
Japan |
(approved in 2006) |
|
||
2011 |
43 rd |
Turkey |
(pending for application) |