Boards & Equipment
What is a frontier line in chess?
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- Pieces
- Coordinates
Frontier line is a board or equipment term: an imaginary line dividing the board into two halves, passing between the fourth and fifth ranks. The frontier line separates White's side of the board from Black's side. Coined by Nimzowitsch. You use this term to describe the board accurately, which matters for notation, coordinates, and analysis.
frontier line FAQ
What is a frontier line in chess?
Frontier line is a board or equipment term: an imaginary line dividing the board into two halves, passing between the fourth and fifth ranks. The frontier line separates White's side of the board from Black's side. Coined by Nimzowitsch. You use this term to describe the board accurately, which matters for notation, coordinates, and analysis.
Train this pattern on your own games
Reading a definition is not the same as spotting the pattern with a clock running. Chessiro's free game review runs Stockfish 18 over every move you play, names the concept behind each mistake, and turns the positions where it cost you into training puzzles. You can also see the idea in action in the classic games collection, where the greatest players in history demonstrate it.
Free game review
See where frontier line decides your games
Chessiro reviews your games with an AI coach that names the concept behind every mistake, then drills you on the exact positions where it happened until you stop repeating them.
