Read the groups correctly / 6 MIN READ
Pure sequence, impure sequence and set
Compare the three building blocks of Indian rummy, including the wild-card detail that simple charts often miss.
A pure sequence uses the cards naturally
A sequence is a run of at least three consecutive cards from the same suit. In a pure sequence, no card acts as a substitute for a missing card. For example, 3♦ 4♦ 5♦ forms a pure sequence. The ranks connect and every card is a diamond.
Adding a fourth consecutive card can make a longer sequence. In contrast, 3♦ 4♥ 5♦ fails because the suits differ. A neat numerical order is not enough. Check both rank and suit, and do not allow the ace to join both ends of a sequence: K-A-2 is not a valid wraparound run in the rules discussed here.
An impure sequence fills a gap
An impure sequence uses a permitted joker to replace a card. If a joker stands for 8♣, the group 6♣ 7♣ Joker can represent 6♣ 7♣ 8♣. Write down the missing card during practice so you can explain exactly what the substitute is doing.
The substitute does not make every collection valid. A group still needs to represent a consecutive same-suit run under the rules you are using. One useful classroom exercise is to remove a card from a known valid sequence and label a paper replacement with the absent rank and suit.
A wild-rank card can sometimes be itself
Here is an important nuance. Pagat's Indian rummy rules allow a selected wild-rank card to appear at its natural value in a pure sequence. If eights are wild, 7♥ 8♥ 9♥ still counts as a pure sequence in that convention because 8♥ is being used as itself.
The same 8♥ placed in J♥ Q♥ 8♥ would stand in for K♥ or 10♥, so it is acting as a substitute and does not make that group pure. Some introductory charts simply say no joker, which hides this distinction. Confirm the convention in the rules for the game you are studying.
A set matches ranks, not a run
A set contains equal ranks in different suits. For a first example, use 6♣ 6♦ 6♥. The order of those cards does not matter. This is different from 6♥ 7♥ 8♥, where the order reveals a sequence.
Two identical copies from multiple decks do not automatically make a valid set. For example, 6♣ 6♣ 6♥ repeats a suit and fails the ordinary different-suit requirement. Rules for jokers and longer sets can vary, so begin with simple three-card natural sets before adding those cases.
- Sequence: consecutive ranks and one suit.
- Pure: no card replaces a missing card.
- Impure: a permitted substitute completes the run.
- Set: matching ranks in different suits.
Sources & reading notes
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First edition · 2 November 2026. AI-assisted writing and illustration; source-based rule checks. Read our editorial policy.
