NUB
| Date | Clue |
|---|---|
| 2026-01-23 | Essence of the matter |
| 2025-05-08 | Worn-down part |
| 2024-04-28 | Small lump |
| 2023-12-10 | Bump on a log, say |
| 2023-04-28 | Lump |
| 2023-03-08 | Gist |
| 2022-08-25 | Well-used pencil, say |
| 2022-01-01 | Central point |
| 2021-05-23 | Crux of the matter |
| 2020-05-19 | Pencil at the end of its life |
| 2019-12-05 | Pencil that's been much used |
| 2018-12-26 | Pencil after lots of crosswords, maybe? |
| 2018-07-17 | Worn-down pencil, e.g. |
| 2018-07-04 | Small protuberance |
| 2017-12-03 | Worn-down pencil |
| 2017-06-18 | Essence of an idea |
| 2017-02-12 | Gist |
| 2015-04-05 | Gist |
| 2013-11-05 | Heart |
| 2013-06-13 | Small lump |
| 2011-12-18 | Core |
| 2010-08-22 | Central point |
| 2009-07-26 | Center |
| 2009-02-23 | Heart |
| 2007-02-05 | Central point |
| 2006-04-09 | Center |
| 2005-05-17 | Gist |
| 2003-08-04 | Kernel |
| 2003-01-22 | One-inch pencil, say |
| 2002-12-31 | Gist |
| 2002-11-25 | Essence |
| 2002-06-12 | Gist |
| 2001-06-28 | Gist |
| 2000-05-04 | Gist |
| 1999-08-01 | Essence |
| 1999-01-06 | Kernel |
| 1998-11-04 | Core |
| 1997-06-12 | Heart |
| 1996-09-01 | Gist |
| 1995-04-26 | Crux |
| 1994-10-30 | Crux |