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ECO C50BlackA line in the Rousseau Gambit

Learn the Rousseau Gambit: 4.d3 Nf6 5.Ng5 d5 line in the Rousseau Gambit

When White lunges with 5.Ng5 to harass f7, Black hits back with the central ...d5 and the active ...Nd4; ...h6 then questions the g5-knight, generating sharp counterplay and full compensation.

The moves you’ll play

  1. 1.e4e5
  2. 2.Nf3Nc6
  3. 3.Bc4f5
  4. 4.d3Nf6
  5. 5.Ng5d5
  6. 6.exd5Nd4
  7. 7.c3h6

The line continues — master it move by move in the app.

Your coach, move by move

  1. 1... e5We seize the center and prepare normal development.
  2. 2... Nc6We develop, guard e5, and set up the thematic ...f5 break.
  3. 3... f5We play the gambit, challenging e4 and inviting complications.
  4. +4 more coached moves waiting in the app

Key ideas behind this line

  • Black's ...f5 and ...e4 grab central space and harass White's f3-knight, which is only guarded by a pawn, so a careless capture or retreat by White can drop material.
  • Against 4.exf5, Black plays the thrust ...e4 followed by ...Nf6 and ...d5 to build a broad pawn center, push White's pieces back, and recapture the f5-pawn with the light-squared bishop.
  • Versus the solid 4.d3, Black recaptures ...fxe4 and develops in Italian style (...Nf6, ...Bb4/...Bc5, ...d6, ...Qe7), often castling queenside because the open f7-square makes short castling awkward.

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More lines in this opening

Rousseau Gambit: Main Line, 5.Qe2

The critical main line: after 4.exf5 e4 5.Qe2, Black pins the e-pawn with ...Qe7 and breaks White's grip with ...Nxd4 and a timely ...d5, regaining the gambit pawn and reaching a level, open middlegame.

Rousseau Gambit: 5.Qe2 Qe7 6.Nd4 Nf6

A sharp sister line where Black develops ...Nf6 before trading on d4; after White grabs e4, the fork ...d5 hits bishop and queen at once, restoring material balance.

Rousseau Gambit: 5.Ng1 Retreat

When White meekly retreats the knight to g1, Black gains free development; ...Nf6, ...d5 and ...dxc4 untangle while picking off White's strong light-squared bishop.

Rousseau Gambit: 5.Nd4 Centralization

Against the centralizing 5.Nd4, Black develops actively with ...Nf6 and ...Bc5; the trade ...dxc6 opens the d-file and the queen's path, giving Black a healthy, active position.

Rousseau Gambit: 4.d4 Central Counter

Against the principled 4.d4, Black exchanges in the center and uses the en passant capture point with ...d5 and ...Nf6 to free the position and regain the pawn with active development.

Rousseau Gambit: 4.d4 with 6...Qe7

An active alternative against 4.d4: Black uses ...Qe7 to attack the e5-pawn, and after 7.Qd5 the queen trade offer with ...Qc5 forces simplification into an equal endgame.

Rousseau Gambit: 4.Nxe5 Qh4 Counterattack

The critical refutation try 4.Nxe5 is met by ...Nxe5 and the strong ...Qh4!, winning the e4-pawn with check; the queen trade leaves Black with an equal, easily-played endgame.

Rousseau Gambit: 4.Nxe5 with 7.Qe2 Bc5

Instead of trading queens, Black can keep them on with 7...Bc5, maintaining the extra activity and pressure on d4 and f2 for a dynamic middlegame with full compensation.

Rousseau Gambit: 4.d3 exf5 Bc5 System

Against the solid 4.d3, Black develops harmoniously with ...Nf6 and ...Bc5; ...d6 and ...d5 then blunt the c4-bishop's diagonal and prepare to recapture the f5-pawn with a sound position.

Rousseau Gambit: 4.d3 fxe4 Exchange

A simplifying choice against 4.d3: Black exchanges on e4, then develops naturally with ...Nf6 and ...Bc5 into a balanced Italian-style structure with open f-file prospects.

Rousseau Gambit: 4.Nc3 Sidestep

If White sidesteps with 4.Nc3, Black develops classically with ...Nf6 and the pinning ...Bb4; ...d5 then strikes the center and the c4-bishop, equalizing comfortably with active piece play.

Rousseau Gambit: 4.O-O fxe4 Trap

Against the casual 4.O-O, Black grabs e4 and meets the tactical Qh5+ with the cool ...g6 and ...Qe7, returning one pawn to trade queens and reach a sound, defensible position.

Rousseau Gambit: 5.Qe2 with 7.Nxc6

In the main 5.Qe2 line, if White trades on c6 instead of retreating, Black recaptures with ...dxc6, opening the d-file and the light-squared bishop for rapid development and easy equality.

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