In chess, a double attack is when you use two pieces to attack your opponent simultaneously. This often happens when you move one piece to create a discovered attack on your opponent.
Often, we think of two of our pieces attacking two of our opponent’s pieces. But many kinds of double attacks are possible.
The video below quickly goes over the difference between a fork and a double attack and then shows a couple of examples of double attacks that do not attack two pieces. I realize that that might sound strange at first, but watch the video and you’ll see what I mean!
Some other themes covered in this video include weak squares, color complex, piece coordination, fork, discovered attacks, interference, and the initiative.