| Clue | Source | Date |
|---|---|---|
| Bracken-like frosty encrustation on window (3,4) | ||
| Pattern on a frosted-up window? | ||
| Frozen encrustation on a window | The Times Specialist Sunday | 13 Aug 2017 |
| Unusually nice ref making appearance on cold surface | The Telegraph Toughie | 22 Dec 2016 |
| Jack Frost artistry. |