| Edition | Year | Answer | % Correct |
|---|---|---|---|
| XVIII | 1994 | Russia | 100%
|
| XXIII | 1999 | Russia | 100%
|
| XXV | 2002 | Russia | 100%
|
| XXVI | 2003 | Russia | 100%
|
| XXVII | 2005 | Russia | 100%
|
| XXVIII | 2007 | Russia | 100%
|
| XXXIV | 2015 | Russia | 100%
|
| XXXV | 2017 | Russia | 100%
|
| IV | 1969 | Bulgaria | 86%
|
| V | 1971 | Bulgaria | 86%
|
| X | 1981 | Bulgaria | 86%
|
| XI | 1983 | Bulgaria | 86%
|
| XII | 1985 | Bulgaria | 86%
|
| XIII | 1987 | Bulgaria | 86%
|
| XIX | 1995 | Bulgaria | 86%
|
| XX | 1996 | Bulgaria | 86%
|
| XXXIII | 2014 | Bulgaria | 86%
|
| VII | 1975 | Italy | 86%
|
| XXIX | 2009 | Italy | 86%
|
| XXX | 2010 | Italy | 86%
|
| XXXI | 2011 | Italy | 86%
|
| XXII | 1998 | Belarus | 76%
|
| XXXII | 2013 | Belarus | 76%
|
| III | 1967 | Soviet Union | 69%
|
| VI | 1973 | Soviet Union | 69%
|
| VIII | 1977 | Soviet Union | 69%
|
| IX | 1979 | Soviet Union | 69%
|