# Previous challenges



Canonical: https://www.mtlarchives.com/en/game/archives

Language: en-CA



One photo. One year. One place. Guess Montréal, every day.



Guess the year (1920–2000), then place a pin in Montréal. Submit both guesses together.

Year: 100 points, falling linearly to zero at ±25 years. Place: 100 points within 250 m, zero at 15 km or more, logarithmic curve. Total out of 200. Your streak is stored on your device.

The photograph and its record are revealed after submission. Answers and personal scores are not exported.

[Play](https://www.mtlarchives.com/en/game)



## Photo credit

Photographs: Archives de la Ville de Montréal.



## Citation guidance

When citing a photograph, include its title, known place and date, archive reference (cote), credit “Archives de la Ville de Montréal”, canonical photo-page URL and source dataset. Distinguish the photograph’s date from a story’s publication date. Do not invent missing places, dates or references; unknown fields are omitted. Identify changes. Do not describe MTL Archives as a municipal service.



## Related links

- [Home](https://www.mtlarchives.com/en)
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- [Partners](https://www.mtlarchives.com/en/partners)

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- [llms.txt](https://www.mtlarchives.com/llms.txt)