Editing Glossary of chess problems (section)

== F ==
{{glossary}}

{{term|term= fairy chess | content = [[fairy chess]] {{anchor|Fairy chess}} }}
{{defn|defn= Chess played with non-orthodox rules. Examples are circe, [[#maximummer|maximummers]], problems with unorthodox pieces ([[fairy pieces]]) and problems with unorthodox boards (such as [[#cylindrical board|cylindrical boards]], or [[#grid board|grid boards]]).}}

{{term|term= field |content = field {{anchor|Field|fields}} }}
{{defn|defn= See ''[[#king's field|king's field]]''. }}

{{term|term= flight square |content = flight square {{anchor|Flight square|flight squares}} }}
{{defn|defn= A square to which a checked king can legally move (that is, one not guarded by an opponent's piece, and not occupied by a friendly piece).  If, prior to being checked, the player moves a friendly piece to a potential flight square and thereby decreases the king's mobility, it is a ''self-block''.  Similarly, if a player moves a friendly piece out of a potential flight square prior to check, it is ''square vacation''.}}

{{glossary end}}