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Five, six and seven of hearts form a same-suit consecutive group.
Editorial illustration, not an app screenshot.

A pure sequence keeps both rank and suit in order

Lay out 4♥, 5♥ and 6♥. The ranks follow one another, every card belongs to hearts, and no substitute fills a gap. This is a pure sequence in the 13-card format discussed here. Now change the middle card to 5♣. The ranks still look consecutive, but the suit changes: it is no longer the same sequence. Reading only the large numbers is an easy way to miss that difference.

RummyCircle’s published rules require a sequence to contain at least three consecutive cards of one suit. We use those separate product rules to explain the terms. They do not establish which rummy modes are available in the Master Crash APK. Four cards such as 4♥, 5♥, 6♥, 7♥ can form one longer pure sequence; they are not two sequences just because several three-card runs can be spotted inside them.

An impure sequence uses a substitute

Consider 9♣, printed joker, J♣. If the joker substitutes for 10♣, the completed group represents 9♣–10♣–J♣. It is an impure sequence, because the missing card is supplied by a substitute. Say which card the joker represents when checking your hand. “There is a joker somewhere” is not enough: the remaining natural cards must still fit one possible sequence under the table’s rules.

A wild-joker rank needs one extra check. RummyCircle’s tournament rules allow a designated joker card to keep its natural role: 4♥–5♥–6♥ remains pure when fives are wild if 5♥ is used as itself, rather than as a replacement. Do not assume that every rules screen explains this exception in the same way. Record the selected joker rank and read the natural-card exception before classifying an uncertain group.

Same cards, different grouping rules
Pure sequence

Consecutive hearts; every card plays its own role.

Impure sequence

JOKER represents 10♣ between 9♣ and J♣.

Set

Three eights in different suits; this is not a sequence.

Three group checks

Read the rank, suit and any substitute separately. One physical card cannot belong to two groups in the declaration example.

A set repeats the rank, not the sequence

Compare 8♣, 8♦ and 8♠ with 8♣, 9♣ and 10♣. The first group is a set: matching ranks in different suits. The second is a sequence: changing ranks within one suit. A set does not satisfy a requirement for a second sequence. This matters when a hand appears neatly grouped but still fails the declaration condition. The group labels carry rules, not just visual descriptions.

With multiple decks, two physical copies of 8♣ can exist. That does not automatically make 8♣–8♣–8♦ a valid set in the referenced 13-card rules: the duplicate suit is the problem. Keep the full rank-and-suit notation when saving an example. A text message saying “three eights” hides the detail needed to explain why one arrangement is accepted and another is rejected.

Check all thirteen cards without reusing one

Try this complete teaching hand: 4♥–5♥–6♥; 9♣–printed joker–J♣; 8♣–8♦–8♠; Q♣–Q♦–Q♥–Q♠. It has thirteen cards, one pure sequence, one impure sequence and two sets. The joker represents 10♣. Under the stated grouping requirements, each physical card belongs to one group. We are checking the arrangement only; this example does not specify a scoring format or demonstrate a live app declaration.

Now remove 5♥ from the first group and place it elsewhere. The hearts group is incomplete even if another group improves. You cannot count the same 5♥ in both places. After moving cards, count the cards again, identify the required sequences and inspect every remaining group. A tidy row on a phone is useful for reading, but the visual spacing does not make an invalid arrangement valid.

Keep a small record when a declaration is unclear

Write the format name, all thirteen ranks and suits, the wild-joker rank and each group as displayed. Note whether your question concerns a group’s validity, the finish action or the final points. Those are different questions. An ace boundary, duplicate card or substituted rank may need its own rule reference. Do not fill a missing rule by applying a convention from a different rummy format.

If an app rejects the arrangement, preserve its exact message and a redacted hand screenshot before rearranging the cards. The rummy overview explains the draw-and-discard flow; the support checklist helps you describe the disputed record. Neither guide can see cards outside the saved view or override an app result. Use the game’s own help route for a product-specific explanation.

Thirteen cards can still leave the second sequence missing

Consider this invented thirteen-card arrangement under the referenced requirement for two sequences, at least one pure. Every card has been counted once and the first group is pure. The problem is in the second group: 8♥–9♠–10♥ changes suit. Consecutive ranks alone do not make it a sequence. The two remaining groups are sets, so they cannot supply the missing second sequence.

Swipe across to see all columns.

GroupArrangementFinding
13♣–4♣–5♣Pure sequence
28♥–9♠–10♥Suit mismatch
3K♣–K♦–K♠Set
47♣–7♦–7♥–7♠Set

A clear explanation is “group two fails the same-suit test”, rather than “the app rejected thirteen cards”. This checks the stated arrangement only and does not calculate points, recommend a discard or infer cards outside the example. Use the rummy overview to keep grouping requirements separate from the draw-and-discard flow.

Sources and scope

Product-specific controls remain subject to the installed app. Illustrations are explanatory and do not represent measured game results or genuine app screenshots.

How we edit and correct these guides

Contact and correction routes

Quick questions

Is 4♥–5♣–6♥ a pure sequence?

No. In the rules used here, the ranks are consecutive but the suits do not match.

Can a set replace the required second sequence?

No. A set is a different group. The referenced 13-card format requires at least two sequences, including one pure sequence.

Rummy rules · Crash & game rules