| 2024-09-07 | Word in two African country names |
| 2021-11-14 | The "C" of D.R.C. |
| 2021-06-27 | World's deepest river |
| 2018-04-05 | Neighbor of Burundi |
| 2016-12-25 | River more than 2,700 miles long that crosses the Equator twice |
| 2013-12-14 | Neighbor of Gabon |
| 2012-11-11 | Michael Crichton novel about diamond-hunting |
| 2008-10-16 | River below the Boyoma Falls |
| 2007-04-25 | Neighbor of Gabon |
| 2006-08-25 | Pointe-Noire's home |
| 2006-01-31 | Zaire, now |
| 2003-09-20 | Setting of Joseph Conrad's "Heart of Darkness" |
| 2001-09-27 | Ubangi's outlet |
| 1994-02-01 | Brazzaville's river |