Rummy Guide: Compare a Hand by Completion Distance

Completion distance is a simple way to compare possible groups. It asks how many specific changes are needed before a set or sequence becomes valid under the format. The measure is not a forecast of the next card; it is a snapshot that helps you allocate attention.

List the candidate groups in your hand and write the missing requirement beside each one. A pair may be one card from a set, while a short sequence may need one of two neighboring ranks. A scattered collection may be several steps away. Be precise about the format’s minimum group length and required pure sequence rules.

Then examine card overlap. Two plans may each appear one card away but depend on the same missing card. Treat them as one shared possibility rather than two independent chances. Also consider whether a completion would leave expensive leftovers elsewhere. Distance matters, but the finished hand matters more.

Use distance differently over time. Early on, a slightly longer route can be worthwhile when it has several completion options and preserves flexible cards. Late in the hand, the shortest legal route generally deserves priority, particularly if the alternative requires holding high-penalty cards. Score pressure can change the balance, so include it in your notes.

Recalculate after every visible change. A discard may remove one route, and a draw may reduce another plan’s distance immediately. If the best route is still unclear, choose an action that keeps two reasonable options alive. Completion distance is a prioritization tool, not a reason to force a plan whose supporting evidence has disappeared.