How does Odysseus defeat the suitors?

As he is pretending to be a beggar he pulls aside two men and informs them that he is their king. He tells them to remove all of the weapons so the suitors won't be able to fight back and he also tells them to take all the women away so they don't get harmed. When all of this is done he attacks the suitors and they are unable to fight back. His son also helps him complete the task.