# Petrov's Defence

> chess opening, consisting of the moves 1. e4 e5 2. Nf3 Nf6

**Wikidata**: [Q326928](https://www.wikidata.org/wiki/Q326928)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Petrov's_Defence)  
**Source**: https://4ort.xyz/entity/petrov-s-defence


## References

1. Integrated Authority File
2. Freebase Data Dumps. 2013
3. Faceted Application of Subject Terminology
4. National Library of Israel