| Borders | Bordering Letters | Country | % Correct |
|---|---|---|---|
| Ireland | Spain | 12 | United Kingdom | 82%
|
| North Korea | 10 | South Korea | 76%
|
| Haiti | 5 | Dominican Republic | 75%
|
| France | 6 | Monaco | 75%
|
| Italy | 5 | Vatican City | 75%
|
| Germany | 7 | Denmark | 73%
|
| South Africa | 11 | Lesotho | 71%
|
| Italy | 5 | San Marino | 71%
|
| Canada | Mexico | 12 | United States | 69%
|
| China | India | 10 | Nepal | 67%
|
| Spain | 5 | Portugal | 67%
|
| China | India | 10 | Bhutan | 65%
|
| Malaysia | 8 | Brunei | 65%
|
| Indonesia | 9 | East Timor | 63%
|
| Senegal | 7 | Gambia | 59%
|
| United States | 12 | Canada | 57%
|
| France | Spain | 11 | Andorra | 53%
|
| Indonesia | 9 | Papua New Guinea | 53%
|
| Saudi Arabia | 11 | Qatar | 53%
|
| Colombia | Peru | 12 | Ecuador | 51%
|
| Latvia | Russia | 12 | Estonia | 47%
|
| China | Russia | 11 | Mongolia | 43%
|
| India | Myanmar | 12 | Bangladesh | 41%
|
| Algeria | Libya | 12 | Tunisia | 41%
|
| Israel | Syria | 11 | Lebanon | 37%
|