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.
- 13…c5: hit d4 at once2 moves to find · 2 questions
- 25.Nf3: the move Stockfish disputes5 moves to find · 3 questions
- 34.Be3: take on d4, then …Nh51 move to find · 3 questions
- 43…a6: wait, then …b53 moves to find · 2 questions
- 5Against 1.d4 and 2.c4: …c5 and …Bxc3+6 moves to find · 3 questions
- 6Against the fianchetto: …Bd7 and …Qc83 moves to find · 2 questions
- ★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.
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Card 1 of 16: Modern Defense
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