Bughouse chess - Wikipedia

Bughouse Chess Variant - Chess Terms

Free Internet Chess Server - Wikipedia

Understanding the Rules of Bughouse Chess

List of chess variants - Wikipedia

The Socio-Politics of the First Move in Chess - The Chess Drum

List of chess variants - Wikipedia

Infinite chess - Wikipedia

Bughouse Chess: Tandem - Chess / by Zimmermann, Georg Von

Bughouse Chess Variant - Chess Terms

This is the craziest checkmate I've ever seen. Edward Lasker vs George Alan Thomas (1912) : r/chess