Just look at the attachment.
From: http://www.checkio.org/mission/house-password/solve/
HTTP_USER_AGENT:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.85 Safari/537.36
Created at: 2015/11/08 01:02; Updated at: 2015/11/08 01:18
