# Josef Kupper

> Swiss mathematician and chess player (1932-2017)

**Wikidata**: [Q4247524](https://www.wikidata.org/wiki/Q4247524)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Josef_Kupper)  
**Source**: https://4ort.xyz/entity/josef-kupper


## References

1. [Source](http://www.arves.org/arves/index.php/en/halloffame/533-kupper-josef)
2. [Source](http://www.swisschess.ch/news-112/im-josef-kupper-im-alter-von-85-jahren-gestorben.html)
3. Mathematics Genealogy Project
4. OlimpBase
5. Virtual International Authority File
6. [Source](https://www.todesanzeigenportal.ch/todesanzeige/Kupper/Josef/)
7. ratings.fide.com