# Nikolai Kristoffel

> Estonian physicist and correspondence chess player (1932-2022)

**Wikidata**: [Q65709032](https://www.wikidata.org/wiki/Q65709032)  
**Source**: https://4ort.xyz/entity/nikolai-kristoffel


## References

1. ICCF correspondence chess player database
2. [Source](https://www.iccf.com/userfiles/files/2012%20SIM.pdf)