Looking on the internet deeply has found these results:

this has been solved is the most popular phrase on the web.

this has solved 1309,000 results on the web	this has been solved 1362,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Unfortunately this has not yet been solved at UN security level, nor has it been solved at Council level in the European Union. It is not true to say, as Mr Chichester implies, that this has been completely solved, that everyone knows exactly how to do it and how much it costs. You know, this has to be solved by morning. This problem has not been solved even by this report. This question remains unanswered because this issue has not been solved for current EU Member States either. But still, this hasn't solved the problem of the invasion. That sly little minx of yours has solved this case, and now I can't find her. It seems Ariadne has solved our problem for us.	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

this has solved

1309,000 results on the web

this has been solved

1362,000 results on the web

More popular!

Unfortunately this has not yet been solved at UN security level, nor has it been solved at Council level in the European Union.
It is not true to say, as Mr Chichester implies, that this has been completely solved, that everyone knows exactly how to do it and how much it costs.
You know, this has to be solved by morning.
This problem has not been solved even by this report.
This question remains unanswered because this issue has not been solved for current EU Member States either.
But still, this hasn't solved the problem of the invasion.
That sly little minx of yours has solved this case, and now I can't find her.
It seems Ariadne has solved our problem for us.

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.