| Rule | Length | Answer | Country | % Correct |
|---|---|---|---|---|
| 1952-2022 | 70 Years | Elizabeth II | United Kingdom | 100%
|
| 1837-1901 | 64 Years | Victoria I | United Kingdom | 84%
|
| 1643-1750 | 72 Years | Louis XIV | France | 81%
|
| 1926-1989 | 62 Years | Emperor Showa | Japan | 77%
|
| 1848-1916 | 67 Years | Franz Joseph I | Austria | 55%
|
| 1946-2016 | 70 Years | Rama IX | Thailand | 45%
|
| 1759-1825 | 65 Years | Ferdinand III | Sicily | 35%
|
| 1900-1982 | 82 Years | Sobhuza II | Swaziland | 23%
|
| 1213-1276 | 62 Years | James I | Aragon | 16%
|
| 1858-1929 | 70 Years | Johann II | Liechtenstein | 16%
|
| 1731-1793 | 61 Years | Honore III | Monaco | 6%
|
| 1661-1722 | 61 Years | Kanxi | Qing Dynasty | 6%
|
| 615-683 | 68 Years | K'inich Janaab Pakal | Palenque | 6%
|
| 1480-1559 | 78 Years | William IV | Henneberg | 6%
|
| 628-695 | 67 Years | Chan Imix Kawiil | Copan | 3%
|