That's not too hard; herehere is one for part 1, and herehere is part 2.
For reference, here is the second query (the first one is identical, but leaves out the q.AnswerCount = 1
condition):
SELECT q.Id AS [Post Link], a.CreationDate
FROM Posts AS q
INNER JOIN Posts AS a ON a.ParentId = q.Id
WHERE a.OwnerUserId = ##UserId##
AND q.AnswerCount = 1
AND q.AcceptedAnswerId IS NULL