Every strong player sees the board in their mind. Sharper board vision means fewer blunders, faster calculation, and the ability to read lines several moves ahead — the single biggest lever on your rating.
The board is a checkerboard and a1 is dark. The four corners alternate: a1 and h8 are dark; a8 and h1 are light.
Trick: number the file a→1, b→2 … h→8. If the file-number and the rank are both odd or both even, the square is dark. Mixed → light. (e.g. e4 → 5 & 4 → mixed → light.)
Files a–h run left→right and ranks 1–8 run bottom→top, both from White's side. To place a square, count the file in from the left edge, then the rank up from the bottom.
A knight moves in an L: two squares one way, one the other. It always lands on the opposite colour to where it started. From the centre it can reach eight squares; from a corner only two — which is why knights hate the rim.
For shortest paths, picture the L-hops: most nearby squares are 2 moves away, and a knight can cross the whole board in about 6.
Name squares out loud as you play. Picture the empty board and quiz yourself on colours. Short daily reps beat occasional long sessions — a five-minute streak here every day compounds fast.
Levels 1–5 (Board Vision) are free for everyone. Grandmaster Vision reads real 2400+ games — the first level is free; the rest, and the Advanced modules, come with Premium. Community drills are free and made by players like you.