Knowing the coordinates of the squares on the chessboard is very important for your chess development. It is a very important skill to have, because it helps you to visualize the board and to see the whole picture. It is also very important for your endgame knowledge, because you need to know the coordinates of the squares to calculate the endgame positions.
When learning openings, certain moves like the famous Nf3 repeat from time to time. If you know the coordinates of the squares, you can easily remember the moves, and your mind might be able to classifiy openings in a better way.
Lastly, you will also need to know the coordinates for writing down moves in an organized over the board game.
In this trainer you can train your coordinates knowledge. You will be shown a random square on the board and you have to click on the correct square. You can also change the perspective of the board and show or hide the pieces.