Dupery WikiIndependent case library

Case tool

Mathematician address calculator

Enter the addresses in your case and the announced total, add only the constraints you can support, and compare the matching sets. A matching set stays a possibility; the arrest decision stays yours.

Your case

01 / INPUT

Separate addresses with commas or spaces. Include required and excluded addresses here too.

A whole number, including 0.

Leave blank if unknown. 0 means no addresses are counted.

What you already know

An address left unmarked stays unknown. Only add a constraint you have a reason to trust.

Must be in every candidate set.

Cannot be in a candidate set.

Up to 30 distinct positive addresses (1–1,000,000). Searches stop at 400,000 steps or more than 200 matches. Incomplete searches never establish a unique answer.

02 / POSSIBILITIES

See which sets fit your assumptions.

Enter your addresses and press Find combinations. The worked example has four matching sets.

The calculator checks your assumptions. It cannot tell whether a clue is truthful or decide who to arrest.

Read a result without overreaching

One combination: one set fits these inputs, if the clue and every constraint are true.

Several combinations: keep each one possible. Another independent clue can narrow them.

No combinations: the inputs conflict. Check them before accusing a resident or the clue giver.

Walk through the four-set example