|[[Infinite chess]]{{refn|group=nb|'''Infinite chess''' is a class of games, which includes [[Infinite chess#Variations|'''Chess on an Infinite Plane''']] and [[Infinite chess#Variations|'''Trappist-1''']] as examples.<ref>[http://www.chessvariants.com/invention/chess-on-an-infinite-plane Chess on an Infinite Plane] game rules</ref><ref>[http://www.chessvariants.com/invention/trappist-1 Trappist-1] game rules</ref>}}