stalemate

The stalemate filter matches a position in which one side has been stalemated:
  stalemate

Examples

An example of stalemate use in finding mirror stalemates (where the the stalemated king is surrounded by empty squares) is in the file mirrorstalemate.cql, which finds the following position:
Matous 2007, after 6....Q:g8
(found from CQL file: mirrorstalemate.cql)