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Chessblood

Coordinates trainer

Chess coordinates: learn every square by name

A square name appears and you click it, or a square lights up and you name it. Thirty seconds a round, from White's side or Black's, until e4, c6 and g7 mean a place on the board without counting.

Free · runs in your browser

Find the square before the clock runs out

  • Two modes: find a named square, or name a highlighted one
  • 30-second rounds or untimed practice
  • Train as White, as Black, or with the side chosen at random
Start training No account, no download.

Why chess coordinates matter

Almost everything written about chess uses square names. A book says 12.Nd5, a video coach says “the knight jumps to d5”, an engine shows a line like Nf3 d5 c4. If you have to count along the edge of the board to find d5, you lose the thread before the idea arrives.

Reading books and annotated games

Annotations only help when you can follow them at reading speed. Once the squares are automatic, you can play through a game in a book or replay a commented game without stopping on every move.

Understanding engine lines

Engine analysis is a list of moves in notation. When you can picture where Bxh7+ lands as you read it, a line of five or six moves becomes something you can see in your head rather than click through one at a time.

Recording your own games

In most over-the-board tournaments with longer time controls you write every move on a scoresheet. Players who know the board write quickly and keep their attention on the game.

How to practise

Learn a few anchor squares first

Start from squares you already know: the kings begin on e1 and e8, the queens on d1 and d8, and the centre is d4, e4, d5 and e5. The starting files of the pieces give you the rest: rooks on a and h, knights on b and g, bishops on c and f.

Go untimed, then race the clock

Do a round or two untimed until you rarely miss, then switch to 30-second rounds. Speed matters because the goal is recognition, not working the square out. Several short sessions spread over a week help more than one long one.

Practise both modes and both sides

Finding a named square and naming a highlighted one train different directions of the same skill, and you need both: one to read notation, the other to write it. Then do the same from Black's side, where the board is turned round and most players slow down.

Hide the board coordinates for the real test. The letters and numbers along the edge are useful while you learn, but they answer the question for you.

Coordinates trainer questions

What are chess coordinates?
Every square has a name made of a file and a rank. Files are the columns, lettered a to h from White's left to right. Ranks are the rows, numbered 1 to 8 from White's side of the board. The square name puts the file first: e4 is the e-file on the fourth rank. Chess notation, engine lines and annotated games all describe moves with these names.
Why does the board look different when I play as Black?
The square names never change, but the board is turned round. From Black's side the a-file is on the right and rank 8 is nearest to you, so h8 sits in the bottom left corner. Most players learn the board from White's side and slow down as Black, which is why the trainer lets you practise from either side or at random.
Should I train with the coordinates shown or hidden?
Hidden is the real test, because the letters and numbers on the board edge give the answer away. If you are just starting, do one or two untimed rounds with them shown to learn where things are, then switch them off and use the timed rounds.
Is my best score saved?
Yes, in this browser only. The best 30-second score for each mode is kept in your browser's local storage, with no account and nothing sent to a server. Clearing your browsing data or switching to another device starts the record from zero.
How do I tell whether a square is light or dark without looking?
Count the file as a number (a = 1, b = 2, up to h = 8) and add the rank. An even total is a dark square and an odd total is a light one. So a1 (1 + 1 = 2) is dark, e4 (5 + 4 = 9) is light and d4 (4 + 4 = 8) is dark. It is a useful check when you visualise bishop moves.

Ready to put the board to work? Try the checkmate puzzles, where every solution is written in the notation you have just learned.