Theck

But why it is not correct? Because it'll be check mate? AFAIK technically in a real play you'll be able to do this move (and then loose to the queen)....

I'm sorry to insist, why it's a non valid move? In a real play will not be able to move there the king and then lose the game by the...

Oh, I see, I'm using Laravel debug bar that uses this package. I'm not sure how to make a pure php version, maybe something using $_SERVER['DOCUMENT_ROOT'] but laravel's index.php is...