1) Chess variant 
Chesquerque is a chess variant invented by George R. Dekle, Sr. in 1986.{sfnp|Pritchard|1994|p=51|ps=}{sfnp|Pritchard|2007|p=195|ps=} The game is played on a board equaling four Alquerque boards combined, and like Alquerque, pieces move along marked lines (9×9) to the points of intersection (81 points). All the standard chess pieces are present, ...