gistfile1.awk

{
    if ( $2 != old_nr ) {
        print output_candidate
        output_candidate = $0
        candidate_result = $3
    } else {
        if ( candidate_result != "pass" ) {
            output_candidate = $0
            candidate_result = $3
        }
        # else, ignore this line and use the previous "pass" result
    }
    old_nr = $2
}

END {
    print output_candidate
}