The winning Delaware Play 4 numbers for December 18, 2005 were: night 7-3-1-9.
Sum is the digits added together (5+5+0 = 10). Root sum keeps adding until one digit is left (10 → 1+0 = 1) — many regular players track it in their notebooks. Odd/Even marks each digit O or E (5-5-0 = OOE). High/Low marks 0–4 as L and 5–9 as H (5-5-0 = HHL).
| Date | Draw | Numbers | Sum | Root |
|---|---|---|---|---|
| Dec 18, 2005 | Night | 7-3-1-9 | 20 | 2 |
| Dec 17, 2005 | Night | 9-1-9-6 | 25 | 7 |
| Dec 17, 2005 | Day | 2-4-4-6 | 16 | 7 |
| Dec 16, 2005 | Night | 8-6-7-6 | 27 | 9 |
| Dec 16, 2005 | Day | 6-7-2-1 | 16 | 7 |
| Dec 15, 2005 | Night | 3-4-7-2 | 16 | 7 |
| Dec 15, 2005 | Day | 5-4-1-2 | 12 | 3 |
| Dec 14, 2005 | Night | 4-2-1-2 | 9 | 9 |
| Dec 14, 2005 | Day | 4-1-5-7 | 17 | 8 |
| Dec 13, 2005 | Night | 4-4-9-3 | 20 | 2 |
| Dec 13, 2005 | Day | 8-9-8-9 | 34 | 7 |
| Dec 12, 2005 | Night | 6-7-4-7 | 24 | 6 |
| Dec 12, 2005 | Day | 8-7-7-1 | 23 | 5 |