Each of these puzzles is lacking clues for one or several of it's answers. In some cases, in particular the "Unlucky ..." puzzles there is one unclued entry, but lots of cross-references to and/or lots of cross-checking of that word. In the other cases, the unclued words form part of a natural set, such as the names of the months of the year. They may also be a selection from a larger set, such as names of countries.
| Date | Crossword | Size WxH | Comments | ||
|---|---|---|---|---|---|
| 2005 May 23 | "Thirteen Mysteries" | 15 | A lot of gaps in a skeletal grid | ||
| 2005 February 28 | "Seven Mysteries III" | 15 | Actually seven of a larger set | ||
| 2005 January 17 | "Seven Mysteries II" | 15 | How many things come in sevens? | ||
| 2005 January 3 | "Four Mysteries III" | 15 | Have a tilt at this windmill | ||
| 2004 November 8 | "Pedantics" | 15 | Has a long almost unclued entry | ||
| 2004 October 11 | "Four Mysteries II" | 15 | Another patchy fabrication | ||
| 2004 August 30 | "Six Mysteries" | 15 | Quite understated in the clues department! | ||
| 2004 August 16 | "Unlucky 17" | 14 x 15 | Fully cross-checked phrase | ||
| 2004 July 19 | "Three Mysteries" | 15 | missing clues but nice composition | ||
| 2004 July 5 | "Unlucky 12" | 14 x 13 | Totally cross-checked mystery word | ||
| 2004 January 19 | "Big Chain" | 16 x 16 | A different form of clue-shortage... | ||
| 2003 Mar 10 | "Unlucky 13" | 13 | The first of the single-mystery puzzles | ||
| 2003 December 22 | "Opposites" | 15 | Across entries are pairs of opposites | ||
| 2003 October 13 | "Four Mysteries" | 15 | Two pairs of mysteries in fact | ||
| 2003 May 19 | "Two Mysteries" | 15 | two missing clues, one dubious phrase | ||
| 2003 May 12 | "Stand & Deliver" | 13 | One almost unclued entry | ||
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