# Ingo Firnhaber

> German author and chess player

**Wikidata**: [Q1663119](https://www.wikidata.org/wiki/Q1663119)  
**Source**: https://4ort.xyz/entity/ingo-firnhaber


## References

1. ICCF correspondence chess player database
2. Virtual International Authority File
3. ratings.fide.com
4. [Source](https://www.iccf.com/userfiles/files/2012%20GM.pdf)
5. [Source](https://www.iccf.com/userfiles/files/2012%20SIM.pdf)