i often want to make sure i check off questions that have been answered. but there is no way to filter your own view of questions by unanswered.
you get sorting (newest, votes, views, etc) but no filtering on unanswered questions.
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You can try a few things suggested on the Search page.
In the case of your own questions that have no answers, you'd want to note these two:
user:1234 posts from a specific user answers:1 questions that have a minimum number of answers
And then build up the search string subbing in your info.