The queen vs rook endgame usually ends with a win for the side with the queen. The problem is that it’s not always that easy and unless you have practiced this end game, you may find yourself in a tricky situation. Remember, if no piece has been captured and no pawn has moved after 50 moves then the game is a draw. So while you might eventually win with a queen vs rook you need to be able to do it quickly.
The main goal in this endgame is to drive the king away from the rook. Sometimes your opponent will make a mistake and you can fork their rook, but if they play correctly this could take many moves.
Click the video below to watch a detailed explanation on the queen vs rook endgame and then practice yourself.