The knight is lesson 5 of 6 in How the pieces move, a basics course suited to players rated around 150 (complete beginners). The knight is the trickiest piece: it jumps. It has 4 interactive exercises: 3 star-collecting exercises, 1 board-square exercise. You play every move on a board and get feedback straight away. The lesson is free.
What this lesson explains
The knight moves in an L: two squares in one direction, then one square to the side. It is the only piece that can jump over others. From d4 it can land on the eight marked squares.
What you practise
Tap every square this knight on b1 can jump to.
Jump to the stars.
The knight is surrounded by its own pawns, but it can jump over them!
chessGM