# Closed Game

> chess opening 1. d4 d5

**Wikidata**: [Q1517916](https://www.wikidata.org/wiki/Q1517916)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Closed_Game)  
**Source**: https://4ort.xyz/entity/closed-game


## References

1. Freebase Data Dumps. 2013