Build a clue sequence that teaches the route
A fair city clue set moves from orientation to discrimination, relies on durable geographic evidence, and explains every clue after the answer.
- Orient: establish region or broad physical setting.
- Narrow: add a river, neighboring place, language, or political role.
- Distinguish: use the final clue to separate the remaining plausible cities.
Start broad, then narrow
A fair clue sequence moves from region to distinctive relationships. Hemisphere and climate can orient a player; a river, neighboring country, language, or transport role can then narrow the field.
Avoid beginning with a nickname that only locals or tourism copywriters use. It tests recall of a phrase rather than geographic reasoning.
Prefer durable facts
Administrative status, relative location, major physical features, and long-standing transport connections age better than population rank or a current mayor.
If a clue depends on a changing statistic, include its reference year and source. A number without a date looks precise while quietly becoming wrong.
Explain the answer
The reveal should connect every clue to the location. A short explanation turns the round into a lesson and makes ambiguous wording easier to audit.
Wordmap's city set stores coordinates, region, country, and clue notes together so a future correction can update the game and the explanation in one place.
Use a clue matrix before publishing
| Candidate | Regional clue | Physical clue | Final distinction |
|---|---|---|---|
| Intended city | Supports | Supports | Identifies |
| Close alternative | Supports | Unclear | Contradicts |
| Distant alternative | Contradicts | Not needed | Not needed |
Use a clue matrix
Before publishing, place candidate cities in rows and clues in columns. Mark whether each clue supports, contradicts, or fails to distinguish each candidate. A clue is useful when it removes plausible alternatives for a clear reason. If it fits several cities equally well, it belongs early in the sequence or needs revision.
The matrix also exposes accidental dependence between clues. A country clue and a capital clue may appear separate while conveying nearly the same information. Replace one with a physical or relational fact so the route to the answer uses more than one kind of evidence.
Keep a source and change log
Store the source, access date, and applicable year for every fact that can change. Population, administrative rank, transport service, and names can become stale. Coordinates should identify what point they represent, such as a reviewed city-center reference rather than a boundary or airport.
When a fact changes, update both the clue and its reveal explanation. A correction log does not need to expose internal notes, but the public updated date should change when the meaning of a clue changes.
Test fairness before release
Give the sequence to a reviewer who did not write it. Ask the reviewer to list remaining candidates after each clue and explain the elimination. This checks whether the path is understandable without the author's private associations.
A difficult round can still be fair when every clue is sourced and the final combination identifies one intended answer. Obscurity alone is not depth. The goal is a solvable chain of geographic evidence followed by an explanation that teaches why it works.