Modern Defense

325 games, 92.6%: Hikaru's defense against 1.e4 and 1.d4 alike. A c-pawn that hits d4, and a g7 bishop he only gives up for a pawn structure.

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  1. 13…c5: hit d4 at once2 moves to find · 2 questions
  2. 25.Nf3: the move Stockfish disputes5 moves to find · 3 questions
  3. 34.Be3: take on d4, then …Nh51 move to find · 3 questions
  4. 43…a6: wait, then …b53 moves to find · 2 questions
  5. 5Against 1.d4 and 2.c4: …c5 and …Bxc3+6 moves to find · 3 questions
  6. 6Against the fianchetto: …Bd7 and …Qc83 moves to find · 2 questions
  7. ★Final quiz0/5 solved first try

The opening at a glance

One idea per card. The chapters explain it all move by move, too.

  • At a glance

    Modern Defense

    325 games, 92.6%: Hikaru's defense against 1.e4 and 1.d4 alike. A c-pawn that hits d4, and a g7 bishop he only gives up for a pawn structure.

    16 cards, one idea each. Swipe to move on.

  • The big idea

    Your games: 271× · you score 91%

    With 1…g6 and 2…Bg7, Hikaru lets White build a center, then hits it. The g7 bishop eyes d4 from move two, and the c-pawn very often joins in.

  • The big idea

    Your games: 3× · you score 67%

    325 games, 92.6%: one of his most played defenses.

  • The big idea

    Your games: 25× · you score 90%

    The dossier flags only one recurring move that Stockfish disputes, 5…Qxc5 against 5.Nf3, and the course shows what the engine plays instead.

  • The big idea

    Your games: 169× · you score 92%

    The thread of the course: …c5 against 3.Nc3, …Nh5 against 4.Be3 and e5, …b5 against queenside castling, …Bxc3+ when White's c-pawns can be doubled, and …Bh3 against the fianchetto.

  • Principle

    Hit d4 with the c-pawn

    Your games: 67× · you score 91%

    The g7 bishop eyes d4 from move two. …c5 adds a pawn: White has to take, push or defend right away.

  • Principle

    Guard c7 when the knight lands on d5

    Your games: 11× · you score 82%

    After 5.Bd2 Qxc5 6.Nd5, c7 is the weak point. The queen has to keep guarding it, even when Bb4 chases her.

  • Principle

    Use the pinned knight

    Your games: 10× · you score 65%

    When White doesn't cover c3 with Bd2, …Bxc3+ takes the pinned knight and doubles the c-pawns.

  • Principle

    Give up the g7 bishop only for a structure

    Your games: 6× · you score 100%

    …Bxc3+ is worth it when it leaves two doubled c-pawns that no pawn can defend anymore. Otherwise, the g7 bishop stays Black's best piece.

  • Principle

    Stop the h-pawn at once

    Against Be3, Qd2 and queenside castling, h4 is White's first weapon. …h5 stops it before it opens the h-file.

  • Imbalance

    Space against targets

    Your games: 169× · you score 92%

    White has the center. Black has a g7 bishop aimed at d4 and pawns ready to strike at that center.

  • Imbalance

    A pawn against the dark squares

    After …Bxc3+ and …Qxc5, Black is a pawn up, but has no bishop left to guard the dark squares around the king.

  • Imbalance

    Kings on opposite wings

    Your games: 3× · you score 67%

    Against White's queenside castling, Black attacks on the queenside with …b5 while White pushes the h-pawn. Every tempo counts.

  • The trade-off

    What you gain

    • One simple plan against almost everything: hit d4.
    • Structures where White's c-pawns become targets.
    • Unbalanced positions, always with a plan to follow.
  • The trade-off

    What you give up

    • After 5.Bd2 Qxc5 6.Nd5, White gains time against the queen.
    • Giving up the g7 bishop weakens the dark squares around the king.
    • Against queenside castling, the race is decided by a single tempo.
  • That's all

    Your turn

    These ideas only stick once you play the moves. The chapters make you find the right ones.

    Start chapter 1

Card 1 of 16: Modern Defense

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