This guide uses testable rule assumptions and does not infer any platform’s implementation from its name. It is educational material, not betting advice.
Key definition
The first two cards define the left and right boundaries; rank order matters more than suit.
How to verify it
The third rank must be strictly between the boundaries to score. Equality is handled separately as a post hit.
Limits and conclusion
Pairs, consecutive ranks, Ace treatment and payouts differ by variant, so they must be stated first.
Practical checklist
This site uses 52 cards, Ace low, no jokers and sampling without replacement; pairs and consecutive ranks are redealt.
Practical checklist
- The first two cards define the left and right boundaries; rank order matters more than suit.
- Pairs, consecutive ranks, Ace treatment and payouts differ by variant, so they must be stated first.
- Fix the rules, preserve a complete record, separate training from testing, and only then ask whether a model adds information beyond a simple baseline.