Open games & French

King's Knight Opening

1.e4 e5 2.Nf3

The King's Knight Opening starts with 1.e4 e5 2.Nf3 and is catalogued under ECO C40, in the open games & french half of the book. The catalog indexes 3 lines inside it, grouped into 3 named variations.

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Current setup

Move ideas

  1. 1.e4

    Claims the center with a pawn and opens lines for the queen and king’s bishop.

    Idea: Build quick development and make early castling possible.

  2. 1e5

    Meets White’s center directly and opens lines for Black’s queen and bishop.

    Idea: Fight for equal central space in a balanced, open position.

  3. 2.Nf3

    Develops the king’s knight and attacks Black’s e5-pawn.

    Idea: Increase central pressure while getting ready to castle.

  4. 2Nf6

    Develops the knight to f6, bringing it into the game.

    Idea: Improve piece coordination and clear the back rank for castling and the rooks.

  5. 3.Nxe5

    Captures the pawn on e5 and changes the local pawn or piece balance.

    Idea: Remove an active defender and improve the moving piece’s influence.

  6. 3d6

    Advances to d6 to claim central space and control nearby key squares.

    Idea: Give the pieces room to develop behind a durable central foothold.

  7. 4.Nf3

    Repositions the knight to f3, where it influences a new part of the board.

    Idea: Improve the piece’s activity and support the next stage of the plan.

  8. 4Nxe4

    Captures the pawn on e4 and changes the local pawn or piece balance.

    Idea: Remove an active defender and improve the moving piece’s influence.

  9. 5.d4

    Advances to d4 to claim central space and control nearby key squares.

    Idea: Give the pieces room to develop behind a durable central foothold.

  10. 5d5

    Advances to d5 to claim central space and control nearby key squares.

    Idea: Give the pieces room to develop behind a durable central foothold.

  11. 6.Bd3

    Develops the bishop to d3, bringing it into the game.

    Idea: Improve piece coordination and clear the back rank for castling and the rooks.

  12. 6Bd6

    Develops the bishop to d6, bringing it into the game.

    Idea: Improve piece coordination and clear the back rank for castling and the rooks.

  13. 7.O-O

    Tucks the king away and activates the rook in a single move.

    Idea: Finish kingside development so the central pieces can coordinate safely.

  14. 7O-O

    Tucks the king away and activates the rook in a single move.

    Idea: Finish kingside development so the central pieces can coordinate safely.

  15. 8.c4

    Advances the c-pawn to gain queenside space and control new squares.

    Idea: Create useful wing space while keeping the central structure flexible.

  16. 8Bg4

    Develops the bishop to g4, bringing it into the game.

    Idea: Improve piece coordination and clear the back rank for castling and the rooks.

  17. 9.cxd5

    Captures the pawn on d5 and changes the local pawn or piece balance.

    Idea: Open lines in the center and reshape the center for the next phase.

  18. 9f5

    Advances the f-pawn to gain kingside space and control new squares.

    Idea: Create useful wing space while keeping the central structure flexible.

  19. 10.Re1

    Repositions the rook to e1, where it influences a new part of the board.

    Idea: Improve the piece’s activity and support the next stage of the plan.

  20. 10Bxh2+

    Captures the pawn on h2 and changes the local pawn or piece balance, forcing the king to answer a check.

    Idea: Remove an active defender and improve the moving piece’s influence.

Book continuations

Waiting for Lichess game popularity.

0 moves
This is the end of the indexed line.

Named variations

Each line below is an indexed entry under King's Knight Opening. Open one to load it on the board and keep exploring from that position.

ECO groups openings by the structures they lead to, so these families tend to share plans with the King's Knight Opening.