♞Chess Trainer
B06Play as White2 lines to train

Learn the Modern Defense

A hypermodern defense that allows White to occupy the center before attacking it from the wings. White aims to use the space advantage to restrict Black without overextending.

Practice this openingUnderstand the moves
Main line

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4

1.e41…g62.d42…Bg73.Nc33…d64.f4

The idea

Why this opening works

The Modern Defense gives White a clear route to use the space advantage to restrict Black without overextending. Its recurring positions revolve around space, the g7 bishop, and delayed central contact, so the repertoire rewards understanding the structure as much as remembering the move order.

What to remember

  • Know the first 7 half-moves of the main line.
  • Understand the purpose of your key moves before adding more theory.
  • Practice the branches until you can respond without move-order guessing.

Move by move

The moves worth understanding

Theory sticks when every move has a job. Start with these ideas from the trainer.

Scroll down through 5 positions

  1. Position 1 of 5

    1.e4

    e2 → e4

    e4 begins the Modern Defense plan: use the space advantage to restrict Black without overextending.

  2. Position 2 of 5

    2.d4

    d2 → d4

    d4 reinforces the center and prepares the next piece-development or pawn-break decision.

  3. Position 3 of 5

    3.Nc3

    b1 → c3

    Nc3 develops or reroutes the knight toward the central squares that drive this opening.

  4. Position 4 of 5

    4.f4

    f2 → f4

    f4 gains kingside space and prepares the pawn lever that gives this setup its attacking potential.

  5. Position 5 of 5

    5.e5

    e4 → e5

    e5 reinforces the center and prepares the next piece-development or pawn-break decision.

Trainer variations

Lines you’ll meet

These are representative branches from the drill, not a demand to memorize everything at once.

Line 11. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4
Line 21. e4 g6 2. d4 Bg7 3. Nc3 c6 4. f4 d5 5. e5

Quick answers

Modern Defense questions

What is the Modern Defense?

A hypermodern defense that allows White to occupy the center before attacking it from the wings. White aims to use the space advantage to restrict Black without overextending. The Modern Defense gives White a clear route to use the space advantage to restrict Black without overextending. Its recurring positions revolve around space, the g7 bishop, and delayed central contact, so the repertoire rewards understanding the structure as much as remembering the move order.

What is the main line of the Modern Defense?

This trainer starts with 1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4. The exact move order can change by variation, so learn the purpose of each move as well as the sequence.

Is the Modern Defense good to learn as White?

It can be a useful part of a White repertoire if its positions match how you like to play. Learn the main plan first, then use the drill to test the recurring replies.

Study next

C50Italian GameClassic development with Bc4 targeting f7. Solid and principled.1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 d5 9. exd5C60Ruy LopezOne of the oldest and most respected openings, pressuring the knight defending e5.1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. d3B20Sicilian Defense (Open)The most popular response to 1.e4. Asymmetric and combative.1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. O-O

Turn the guide into recall

Now play the Modern Defense from memory.

The drill gives you an opponent reply, checks your response, and repeats the branches that need more work.

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