Last Extra test(4/4) is bugged, it has 1 argument,but it should be 3 of them.
From: https://js.checkio.org/mission/count-neighbours/solve/
HTTP_USER_AGENT:
Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 YaBrowser/17.1.0.2034 Yowser/2.5 Safari/537.36
Created at: 2017/02/02 21:40; Updated at: 2017/02/03 15:06
The question is resolved.
