Queen and Knight - an uneven, but strong Duo

A few days ago someone showed me an example, when White was able to start a decisive mate attack

As you have seen, Queen and Knight can be a very effective duo in a mate attack. Here another example. Queen and knight forced the black king into a mate net

Finally a very nice one that demonstrates the power of the Queen-Knight Duo. White gave two rooks and a knight bring that uneven pair into action