Make sure you have a good reason for the check. It will only be accepted to counter vandalism or disruption to Wikimedia wikis. Valid reasons include needing a block of the underlying IP or IP range, disruptive sockpuppetry, vote-stacking, and similar disruption where the technical evidence from running a check would prevent or reduce further disruption.
Be specific in your reasons. Ambiguous or insufficient reasons will cause delays. Explain the disruption and why you believe the accounts are related, ideally using diff links or other evidence.
Make sure there are no local checkusers or policies.
Reason(s): Tubus voted in favor of MrArifnajafov in voting for removal of his admin flag. And according to rules it is forbidden for candidates to vote for themselves. I ask you as a bureaucrat of azwiki.--Sortilegus (talk) 15:03, 30 September 2014 (UTC)
Why do you think they are the same person? Ruslik (talk) 19:02, 30 September 2014 (UTC)
Dear Ruslik, first of all because Tubus started to edit in Wikipedia since MrArifnajafov stopped his activity more than one year ago. In last few days while voting is ongoing MrArifnajafov started to edit, but Tubus is not active on the same days. Also their manner of editing and communication looks similar. Both of them are making some mistakes in articles specific for them. We don't know really, but MrArifnajafov says that he is living in Germany. Maybe it also can help you in identification of sock. Voting ended one hour ago and as a result MrArifnajafov keeps sysop flag by 1 vote difference. So this request is very important to come to a final decision. I'm an administrator in az-wiki. Thank you in advance.--Wertuose (talk) 19:51, 1 October 2014 (UTC)
I agree with Wertuose in all points. And want to inform you that Tubus's vote decides the fate of admin flag.--Sortilegus (talk) 20:06, 1 October 2014 (UTC)