module Convertfen:sig..end
val fen : stringval symbols1 : Str.regexpval lfen : string -> string listval afen : string -> string arrayval apos : string -> string arrayval empty : char -> char listval array_of_chars : string -> char arrayval list_of_chars : string -> char listval boardVL : string -> char list arrayval boardM : string -> char array arrayval boardFM : string -> (char * char) array arrayval f : int * int -> char * char