Theoria

Opening guide · Repertoire for White

London System: learn the moves and ideas

Building a solid, unbreakable foundation with the potential for a fast and explosive attack!

Practise this opening

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Opening positionWhite to move.
1. d4 d5 2. Bf4 Nf6 3. e3 e6

Two lines from our repertoire

Follow each line from the starting position. The notes explain the position after the displayed move, including the plan for the next move. These are repertoire examples; your opponent can choose other replies.

Pause at the diagrams to see the idea. The highlighted squares show the last move; the note explains what comes next.

Moves use international algebraic notation: N = knight, B = bishop, R = rook, Q = queen, K = king.

1. London Introduction

  1. 1. d4
  2. 1... d5
    After 1... d5

    Black can start either with 1... d5 or with the development 1... ♞f6

  3. 2. Bf4
  4. 2... Nf6
    After 2... Nf6

    Our task, as in any opening, is to develop the pieces, especially the light pieces on the ♔-side, before castling

  5. 3. Nf3
  6. 3... e6
    After 3... e6

    Which piece prevents us from castling? Correct – the light-squared ♝. We clear the way for it by forming a pawn chain – ♟e2-e3!

  7. 4. e3
  8. After 4... Be7White to move.
    At the board4... Be7
    After 4... Be7

    If Black poses no threats, we proceed to building the pyramid, after developing the light-squared ♝

  9. 5. Bd3
  10. 5... O-O
    After 5... O-O

    Don’t forget to finish the pyramid! Our goal is to set up a rock-solid, unbreakable base! Play ♟c2-c3!

  11. 6. c3
  12. 6... Nc6
    After 6... Nc6

    Beginners often blunder here by placing the knight in front of ♟c7, where it blocks the pawn. Our ♟c3 perfectly restrains Black’s ♞c6. Development first!

  13. 7. Nbd2
  14. 7... a6
    After 7... a6

    Here Black often gets lost, pushing pawns aimlessly. We can castle right away, but we can also be sneaky and aim at ♟h7 – ♛c2!

  15. 8. Qc2
  16. After 8... b5White to move.
    At the board8... b5
    After 8... b5

    After yet another Black pawn leaves its home square, we seize the moment and strike at the undefended ♞c6

  17. 9. Ne5
  18. 9... Nxe5
    After 9... Nxe5

    A serious blunder, leading Black to lose a pawn

  19. 10. dxe5
  20. 10... Nh5
    After 10... Nh5

    Black pulls back the ♞f6, giving up control over ♟h7

  21. 11. Bxh7+
  22. 11... Kh8
    After 11... Kh8

    Don't forget to retreat the ♝ to its base (to d3), keeping it out of harm's way.

  23. After 12. Bd3Black to move.
    At the board12. Bd3
    After 12. Bd3

    With a comfortable position and an extra pawn to boot!

2. Bishop exchange attempt (1)

  1. 1. d4
  2. 1... d5
    After 1... d5

    Black can start either with 1... d5 or with the development 1... ♞f6

  3. 2. Bf4
  4. 2... Nf6
    After 2... Nf6

    Our task, as in any opening, is to develop the pieces, especially the light pieces on the ♔-side, before castling

  5. 3. Nf3
  6. 3... e6
    After 3... e6

    Which piece prevents us from castling? Correct – the light-squared ♝. We clear the way for it by forming a pawn chain – ♟e2-e3!

  7. 4. e3
  8. After 4... Bd6White to move.
    At the board4... Bd6
    After 4... Bd6

    A common suggestion to exchange the ♗. Black wants to trade and saddle us with doubled pawns on the f-file, but we choose to exchange on our own terms by retreating

  9. 5. Bg3
  10. 5... Bxg3
    After 5... Bxg3

    It may look odd: why double our own pawns? But in fact we open the h-file for our ♜

  11. 6. hxg3
  12. 6... O-O
    After 6... O-O

    Now our ♜h1, without having moved yet, already joins the fight against the opponent’s king. Don’t forget the development of the minor pieces!

  13. 7. Bd3
  14. 7... h6
    After 7... h6

    Our goal is to complete the development of all our pieces according to the plan, without rushing into an attack on the ♚

  15. 8. Nbd2
  16. After 8... Nc6White to move.
    At the board8... Nc6
    After 8... Nc6

    Beginners often blunder by placing the knight in front of ♟c7, where it blocks the pawn. We take advantage by attacking it – ♞e5!

  17. 9. Ne5
  18. 9... Nxe5
    After 9... Nxe5

    Again, why double our pawns? Because we drive away the knight and gain space for active piece play

  19. 10. dxe5
  20. 10... Nd7
    After 10... Nd7

    We must support the pawn and then transfer our pieces to the kingside, putting pressure on the black ♚

  21. 11. f4
  22. 11... f6
    After 11... f6

    It seems logical… but in fact this move weakens Black even more. How do we attack ♟e6? We need the queen!

  23. 12. Qg4
  24. After 12... f5White to move.
    At the board12... f5
    After 12... f5

    Black’s position is dire: 1) they’re pinned to the ropes; 2) they lack space; 3) after our next move, the ♟h6 is hanging

  25. 13. Qg6
  26. 13... Qe8
    After 13... Qe8

    It may look like Black has fended off our attack, but then our ♖ joins the action, winning material

  27. 14. Rxh6
  28. 14... Qxg6
    After 14... Qxg6

    We take the queen, winning a ♟ in the process

  29. 15. Rxg6
  30. 15... Kf7
    After 15... Kf7

    Don’t forget to move the ♜ to g5, taking it out of attack.

  31. After 16. Rg5Black to move.
    At the board16. Rg5
    After 16. Rg5

    With a healthy extra pawn and no compensation for Black

Original commentary from Theoria’s opening lessons, prepared by FIDE Master Maksims Golubovskis.

Put the idea on the board

Open this opening in the trainer to study and practise its lines. Start with one line, explain the purpose of each move, then try to recall it without hints.

Your opening, explained by a master.

FIDE Master and the chess educator behind MaxounChess, Max prepares Theoria’s opening lessons to help you understand the plan and make your next move with purpose.

FMMaksims Golubovskis

Max has loved chess since childhood and wants to share that passion. For him, the game teaches more than moves: clear decisions under pressure, patience when plans fall apart, and the self-control to tackle problems calmly, on and off the board.