| Years | Countries | Member countries bordered | % Correct |
|---|---|---|---|
| 1952 - 2009 | Albania | Greece | 96%
|
| 1949 - | Andorra | France, Spain | 96%
|
| 1952 - 2004 | Bulgaria | Greece, Turkiye | 96%
|
| 1949 - | Austria | Czechia, Germany, Hungary, Italy, Slovakia, slovenia | 92%
|
| 2009 - | Bosnia and Herzegovina | Croatia, Montenegro | 92%
|
| 1949 - | Ireland | United Kingdom | 92%
|
| 1949 - | Switzerland | France, Germany, Italy | 92%
|
| 1999 - | Belarus | Latvia, Lithuania, Poland | 88%
|
| 1949 - 2023 | Finland | Norway | 88%
|
| 2009 - | Kosovo | Albania, Montenegro, North Macedonia | 88%
|
| 1990 - 1999 | Poland | Germany | 88%
|
| 2006 - | Serbia | Bulgaria, Croatia, Hungary, Montenegro, North Macedonia, Romania | 88%
|
| 1999 - 2004 | Slovakia | Czechia, Hungary, Poland | 88%
|
| 1993 - 1999 | Czechia | Germany | 85%
|
| 1952 - | Iraq | Turkiye | 85%
|
| 1949 - | Mexico | United States | 85%
|
| 1949 - | Monaco | France | 85%
|
| 1991 - 2020 | North Macedonia | Albania, Bulgaria, Greece | 85%
|
| 1991 - | Russia | Estonia, Finland, Latvia, Lithuania, Norway, Poland | 85%
|
| 1949 - 1982 | Spain | France, Portugal | 85%
|
| 1949 - 2024 | Sweden | Finland, Norway | 85%
|
| 1949 - 1958, 1961 - | Syria | Turkiye | 85%
|
| 1999 - | Ukraine | Hungary, Slovakia, Poland, Romania | 85%
|
| 1991 - | Armenia | Turkiye | 81%
|
| 1991 - | Azerbaijan | Turkiye | 81%
|
| 1999 - 2009 | Croatia | Hungary, Slovenia | 81%
|
| 1955 - 1990 | East Germany | West Germany | 81%
|
| 1952 - | Iran | Turkiye | 81%
|
| 2009 - 2017 | Montenegro | Albania, Croatia | 81%
|
| 1999 - 2004 | Romania | Hungary | 81%
|
| 1949 - | San Marino | Italy | 81%
|
| 1991 - 2004 | Slovenia | Hungary, Italy | 81%
|
| 1991 - | Georgia | Turkiye | 77%
|
| 2004 - | Moldova | Romania | 77%
|
| 1949 - | Vatican City | Italy | 77%
|
| 1999 - 2004 | Lithuania | Poland | 73%
|
| 1949 - 1955 | West Germany | Belgium, Denmark, France, Luxembourg, Netherlands | 73%
|
| 1956 - 1962 | Morocco | France | 69%
|
| 1955 - 1993 | Czechoslovakia | West Germany, Germany | 65%
|
| 1949 - 1991 | Soviet Union | Norway, Turkiye | 65%
|
| 1949 - 1991 | Yugoslavia | Greece, Italy | 65%
|
| 1951 - 1962 | Libya | France | 58%
|
| 1960 - 1962 | Mali | France | 58%
|
| 1960 - 1962 | Mauritania | France | 58%
|
| 1993 - 2006 | Serbia and Montenegro | Bulgaria, Hungary, Romania | 58%
|
| 1956 - 1962 | Tunisia | France | 58%
|
| 1960 - 1962 | Niger | France | 54%
|
| 1958 - 1961 | United Arab Republic | Turkiye | 38%
|