Is the delta system a winning strategy?

No. It only describes the shape of drawn combinations; every combination remains equally likely.

UK Lotto: the delta system recalculated

The delta system records the gaps instead of the numbers: the lowest number, then the gap to the next. 3 · 8 · 9 · 21 · 30 becomes 3 · 5 · 1 · 12 · 9. The idea: small deltas are more frequent, so you build your lines with small deltas.

Delta frequency

Share of each delta value across the 1151 draws (all positions) against the exact probability. For a random draw, P(delta = g) = C(N−g, K−1) / C(N, K): small gaps are more frequent simply because more combinations contain them.

ObservedExpected

Δ 110.0 % / 10.2 %

Δ 29.0 % / 9.3 %

Δ 38.5 % / 8.5 %

Δ 48.0 % / 7.7 %

Δ 57.2 % / 7.0 %

Δ 66.6 % / 6.4 %

Δ 75.7 % / 5.8 %

Δ 84.9 % / 5.2 %

Δ 94.9 % / 4.7 %

Δ 104.2 % / 4.2 %

Δ 113.8 % / 3.8 %

Δ 123.5 % / 3.4 %

Δ 132.9 % / 3.0 %

Δ 142.9 % / 2.7 %

Δ 152.4 % / 2.4 %

Δ 162.1 % / 2.1 %

Δ 171.8 % / 1.9 %

Δ 181.9 % / 1.7 %

Δ 191.3 % / 1.5 %

Δ 201.3 % / 1.3 %

Δ 210.9 % / 1.1 %

Δ 221.2 % / 1.0 %

Δ 230.8 % / 0.8 %

Δ 240.6 % / 0.7 %

Δ 250.7 % / 0.6 %

Δ 260.5 % / 0.5 %

Δ 270.4 % / 0.4 %

Δ 280.3 % / 0.4 %

Δ 290.3 % / 0.3 %

Δ 300.2 % / 0.3 %

Δ 310.3 % / 0.2 %

Δ 320.1 % / 0.2 %

Δ 330.2 % / 0.1 %

Δ 340.1 % / 0.1 %

Δ 350.2 % / 0.1 %

Δ 360.1 % / 0.1 %

Δ 370.1 % / 0.1 %

Δ 380.0 % / 0.0 %

Δ 390.1 % / 0.0 %

Δ 400.0 % / 0.0 %

Δ 410.0 % / 0.0 %

Δ 420.0 % / 0.0 %

Δ 430.0 % / 0.0 %

80% of deltas are between 1 and 14. Average delta: observed 8.49, expected 8.57.

Deltas of the latest draws

Date	Winning numbers	Δ
17.10.2026	4 9 15 32 38 42	4 · 5 · 6 · 17 · 6 · 4
14.10.2026	18 24 29 35 39 47	18 · 6 · 5 · 6 · 4 · 8
10.10.2026	18 45 46 48 54 59	18 · 27 · 1 · 2 · 6 · 5
07.10.2026	3 8 11 38 42 44	3 · 5 · 3 · 27 · 4 · 2
03.10.2026	15 37 39 42 46 53	15 · 22 · 2 · 3 · 4 · 7
30.09.2026	25 52 53 54 55 57	25 · 27 · 1 · 1 · 1 · 2
26.09.2026	22 27 38 42 47 59	22 · 5 · 11 · 4 · 5 · 12
23.09.2026	7 8 16 33 37 42	7 · 1 · 8 · 17 · 4 · 5
19.09.2026	14 20 30 37 40 52	14 · 6 · 10 · 7 · 3 · 12
16.09.2026	22 35 36 45 51 57	22 · 13 · 1 · 9 · 6 · 6
12.09.2026	10 12 29 31 36 54	10 · 2 · 17 · 2 · 5 · 18
09.09.2026	6 17 27 39 40 42	6 · 11 · 10 · 12 · 1 · 2

Delta generator

Generates lines whose deltas follow the observed distribution (so frequent deltas appear more often). Option: maximum delta.

Conclusion: the delta distribution of real draws matches chance exactly. A line with “typical” deltas is therefore no more likely than any other – the system merely rules out combinations (e.g. very spread out ones) that come up just as often as the rest.

How it works

The winning numbers are sorted; the deltas are the gaps between neighbouring numbers (the first number counts as the first delta). The page shows which deltas occurred how often and generates lines from typical deltas.

Example

3 – 11 – 17 – 30 – 44 gives the deltas 3, 8, 6, 13, 14.

Limitations

Small deltas are more common because mathematically there are more combinations with small gaps – not because they are "better". The odds of winning stay the same.

Frequently asked questions about this tool

Is the delta system a winning strategy?: No. It only describes the shape of drawn combinations; every combination remains equally likely.