What is "quatrochess"

Quatrochess is a chess variant for four players invented by George R. Dekle, Sr. in 1986. The board comprises 14×14 squares minus the four central squares. Each player controls a standard set of sixteen chess pieces, and additionally nine fairy pieces. The game can be played in partnership (two opposing teams of two) or all-versus-all.

Quatrochess was included in World Game Review No. 10 edited by Michael Keller.