Every square on a chessboard has a unique dictation. The board is made of 64 squares arranged in a grid. To find a square’s name, you simply look at the "File" (the vertical column, a to h) and the "Rank" (the horizontal row, 1 to 8). You always say the letter first and the number second.
Mastering square identification is like learning a new language. For example, the four squares in the very center - d4, d5, e4 and e5 are the most important squares because pieces controlling the squares can control the whole game.
Beyond just dictations, every square belongs to a specific color - either white or black. It is important to notice that a chessboard always has a white square in the bottom-right corner for both players. The chessboard tells how certain pieces, like Bishops, can move, since a Bishop starting on a white square can never step onto a black square, understanding the color of your squares helps you realize which parts of the chessboard your pieces can actually control.
Understanding squares also helps you see the diagonals. While files and ranks are straight paths, diagonals are slanted lines of squares that stay on the same color. Learning to identify a square like g2 or c7 instantly allows you to plan ahead and see how far a Queen or Bishop can strike across the board. The faster you can name a square, the faster you can calculate your next big move and spot traps set by your opponent.