This game is based on Overloading. It tells how overloading is done to take a queen.

What do you mean by the term 'overloading', I am unfamiliar with this termonology.

I have given the meaning of OVERLOADING by taking this game as an example.

The move 12.Nd6+ Overloads the black Bishop (Now he has to defend 2 or more seperate threats)and it unpins the c3 Knight (in order to remove King from check and queen from the attack). As a result, c3 Knight takes the Queen.

If a piece has to defend 2 or more attacks then that piece is called OVERLOADED PIECE and that position is termed as OVERLOADING POSITION. 

Its where one piece cant defend against 2 seperate threats at once. For example blacks bishop had to guard Nd6+, and keep whites knight pinned to stop Nxe4, but it couldnt stop both threats and as a result he lost his queen.

Thanks, I usually call this sort of thing a double attack or something, i havent studied termonology etc.

Actually, this can also be called overworking. For example, a bishop that cannot defend against two or more threats is considered an overworked bishop.

its a good example of a great strategy