; Find games where one side wins, ; but is down at least a queen's worth of material ; for at least 5 consecutive moves, ; sorted by the length of time he was down the material cql(input heijden.pgn) flipcolor {result 1-0 sort "Number of consecutive ply winner is down at least 9" next 5 1000 nestban ({powerdifference 9 100 (a A)}+) }