Theoria

Opening guide · Repertoire for White

The Caro-Kann Weapon 3.f3: learn the moves and ideas

A rare 3.f3 line that catches most opponents off guard. It often leads to comfortable positions.

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Opening positionBlack to move.
1. e4 c6 2. d4 d5 3. f3

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. ♟f7 - a signal for the maneuver ♘f3-g5 (1)

  1. 1. e4
  2. 1... c6
    After 1... c6

    We play ♙d2-d4, seizing the center!

  3. 2. d4
  4. 2... d5
    After 2... d5

    White has many different continuations, but one of the trickiest is ♙f2-f3! Already on the third move we throw the opponent out of their preparation, forcing them to play from scratch.

  5. 3. f3
  6. After 3... dxe4White to move.
    At the board3... dxe4
    After 3... dxe4

    The most popular continuation, simplifying the position in the center. We capture in return with ♙f3xe4, freeing the f3 square for ♘g1.

  7. 4. fxe4
  8. 4... e5
    After 4... e5

    Please note: Black not only attacked ♙d4, but also created the threat of ♛d8-h4, winning ♙e4 with a fork. Therefore, we play ♘g1-f3, keeping the position under control.

  9. 5. Nf3
  10. 5... exd4
    After 5... exd4

    Capturing the pawn: ♘f3xd4 is not very promising because of the counter ♟c6-c5, leading to an endgame with an isolated ♙e4 for White. Therefore, we play ♗f1-c4, rapidly developing our pieces and creating pressure on ♟f7.

  11. 6. Bc4
  12. 6... Nf6
    After 6... Nf6

    We castle, bringing the ♖h1 into play for active, albeit indirect for now, pressure on ♟f7. Of course, for Black to capture with ♞f6xe4 would be extremely dangerous...

  13. 7. O-O
  14. After 7... Bc5White to move.
    At the board7... Bc5
    After 7... Bc5

    What do Black want? They want to castle quickly, play ♝c8-g4, and confidently keep their extra pawn. Therefore, we need to act decisively, using the main trumps of the position. We play ♘f3-g5, organizing a swift attack against ♟f7.

  15. 8. Ng5
  16. 8... O-O
    After 8... O-O

    Surely many will be tempted to play ♙e4-e5, bringing ♖f1 into the attack against ♟f7, but in that case — let’s say ♞f6-d5. Therefore, first we strike: ♗c1xf7, forcing the ♚ to move onto the same "f" file as the ♖f1.

  17. 9. Bxf7+
  18. 9... Rxf7
    After 9... Rxf7

    We capture in return ♘f3xg5!

  19. 10. Nxf7
  20. After 10... Kxf7White to move.
    At the board10... Kxf7
    After 10... Kxf7

    White can play either ♙e4-e5 winning the knight pinned, or ♕d1-h5, capturing the more dangerous ♝c5. We announce a fork!

  21. 11. Qh5+
  22. 11... Kg8
    After 11... Kg8

    We capture the bishop: ♕h5xc5!

  23. 12. Qxc5
  24. 12... Nxe4
    After 12... Nxe4

    Send ♕c5 - e5, centralizing the main attacking piece

  25. 13. Qe5
  26. 13... Nf6
    After 13... Nf6

    White's position is winning, but confidently converting the game in your favor without development will be difficult. Play ♗c1-g5, bringing the bishop into active play.

  27. After 14. Bg5Black to move.
    At the board14. Bg5

2. You can't be this greedy!

  1. 1. e4
  2. 1... c6
    After 1... c6

    We play ♙d2-d4, seizing the center!

  3. 2. d4
  4. 2... d5
    After 2... d5

    White has many different continuations, but one of the trickiest is ♙f2-f3! Already by the third move, we force our opponent out of their preparation, making them play from scratch.

  5. 3. f3
  6. After 3... dxe4White to move.
    At the board3... dxe4
    After 3... dxe4

    The most popular continuation, simplifying the position in the center. We capture in response with ♙f3xe4, freeing the f3 square for ♘g1.

  7. 4. fxe4
  8. 4... e5
    After 4... e5

    Please note: Black not only attacked ♙d4, but also created the threat of ♛d8-h4 with the idea of capturing ♙e4 with a fork. That’s why we play ♘g1-f3, keeping the position under control.

  9. 5. Nf3
  10. 5... exd4
    After 5... exd4

    Capturing the pawn: ♘f3xd4 is not very promising because of the counter ♟c6-c5, leading to an endgame with an isolated ♙e4 for White. Therefore, we play ♗f1-c4, quickly developing our pieces and putting pressure on ♟f7.

  11. 6. Bc4
  12. 6... Nf6
    After 6... Nf6

    We castle, bringing the ♖ h1 to a more active position, applying, albeit indirect for now, pressure on the ♟ f7. Of course, for Black to capture with ♞ f6 - e4 would be extremely dangerous...

  13. 7. O-O
  14. After 7... Nxe4White to move.
    At the board7... Nxe4
    After 7... Nxe4

    Because of Black's severe lag in development, their greed cannot go unpunished... We play ♘f3-e5, putting strong pressure on ♟f7

  15. 8. Ne5
  16. 8... Be6
    After 8... Be6

    The simplest path to victory is to strike: ♘e5xf7, exposing the ♚e8. We not only capture a pawn, but also decisively expose the king, which we will take advantage of.

  17. 9. Nxf7
  18. 9... Bxf7
    After 9... Bxf7

    We capture ♗c4xf7, exposing the enemy king

  19. 10. Bxf7+
  20. 10... Ke7
    After 10... Ke7

    Pay attention to the poorly placed ♚e7 on the "e" file and take advantage of this by pinning the knight: ♕d1-e2!

  21. After 11. Qe2Black to move.
    At the board11. Qe2
    After 11. Qe2

    Victory will be ours!

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

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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.