POHL
| Date | Clue |
|---|---|
| 2022-05-19 | Four-time Hugo Award winner Frederik |
| 2019-07-20 | Nebula Award winner Frederik |
| 2012-06-06 | Science fiction writer Frederik |
| 2012-03-11 | Science fiction author Frederik |
| 2011-08-13 | Sci-fi writer Frederik |
| 2010-02-03 | Science fiction writer Frederik |
| 2009-04-18 | "The Far Shore of Time" author Frederik |
| 2005-04-10 | Science fiction writer Frederik |
| 2004-03-03 | Sci-fi writer Frederik |
| 2003-11-28 | Sci-fi author Frederik |
| 1999-07-11 | Sci-fi writer Frederic |
| 1998-01-23 | Sci-fi author Frederik |
| 1997-02-28 | Sci-fi writer Frederik |