Openings

What does Semi-Open Game mean in chess?

  • Opening
  • Plans
  • Move Order

In chess, Semi-Open Game refers to an opening that begins with White playing 1.e4 and Black replying with a move other than 1...e5. Also called half-open game.

Semi-Open Game FAQ

What does Semi-Open Game mean in chess?

In chess, Semi-Open Game refers to an opening that begins with White playing 1.e4 and Black replying with a move other than 1...e5. Also called half-open game.

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 PGN analysis runs Stockfish 19 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.

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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.