Italian Game, Rousseau Gambit

Rousseau Gambit
7	7
6	6
5	5
4	4
3	3
2	2
1	1
Moves	1.e4 e5 2.Nf3 Nc6 3.Bc4 f5
ECO	C50
Origin	19th century
Named after	Eugène Rousseau
Parent	Italian Game

The Rousseau Gambit (or Ponziani Countergambit) is a chess opening that begins with the moves:

1. e4 e5

2. Nf3 Nc6

3. Bc4 f5

The gambit is named after French chess master Eugène Rousseau. White can decline the gambit by supporting the e-pawn with 4.d3. The resulting position is similar to a King's Gambit Declined with colours reversed, and White's king bishop aiming at Black's weakened kingside. Black will have trouble castling kingside and Ng5 is a likely threat. White's position is better, but still requires careful play.

Key themes for White are to attack Black's kingside and to avoid attempts by Black to simplify the position. Exchanges involving White's light-square bishop are particularly suspect.

This article uses algebraic notation to describe chess moves.

White responses

Gambit Declined: 4.d3

White can decline the gambit and wait to capture the f-pawn.

Gambit Accepted: 4.exf5

White still has a good game after the inferior 4.exf5, but the position is less clear. Black usually plays 4...e4, which White may meet by 5.Nd4! Nf6 (5...Nxd4? leads to trouble after 6.Qh5+) 6.Nxc6.

4.d4!

	a	b	c	d	e	f	g	h
8									8
7									7
6									6
5									5
4									4
3									3
2									2
1									1
	a	b	c	d	e	f	g	h

After 4.d4!

White gets a clear advantage with 4.d4!:

4...fxe4 5.Nxe5 d5 6.Bb5 Ne7 7.0-0 a6 8.Bxc6+ bxc6 (8...Nxc6? 9.Qh5+) 9.f3 Bf5 10.Nc3 +/− (Bilguer Handbuch).^[1]^[2]
4...d6 and now:
- 5.Ng5 Nh6 6.d5 Nb8 (6...Ne7 7.Nc3 f4 8.g3 Ng6 9.Bb5+ +/−; Maróczy) 7.Nc3 f4 8.h4 Bg4 9.f3 Bd7 10.g3 fxg3 11.f4 +/− (Sozin).
- 5.dxe5 and now:
  - 5...fxe4 6.Qd5 Qe7 7.Bg5 Be6 8.Qxe4 +/− de Rivière–Anderssen, London 1862.^[1]
  - 5...dxe5 6.Qxd8+ Nxd8 (6...Kxd8 7.Bg5+ Nf6 8.Nc3 +/− Morphy–Worrall, London 1859) 7.Nxe5 fxe4 8.Bd2 Bd6 9.Bc3 +/− Löwenthal & Medley vs Morphy & Mongredien, London 1857.^[1]
4...Nf6 5.dxe5 Nxe4 6.0-0 Bc5 7.Nc3 Nxc3 8.bxc3 h6 9.Nd4 g6 10.Nb3 +/− (Bilguer).^[1]

References

^ ^a ^b ^c ^d T. D. Harding; G. S. Botterill (1977), The Italian Game, B. T. Batsford Limited, p. 128, ISBN 0-7134-3261-6
^ Kasparov, Gary; Keene, Raymond (1982), Batsford Chess Openings, American Chess Promotions, p. 308, ISBN 0-7134-2112-6

External links

Tim McGrew (2002-07-01). "Giuoco Fortissimo: The Rousseau Gambit Part 1" (PDF). Chesscafe.com.
Tim McGrew (2002-07-30). "Giuoco Fortissimo: The Rousseau Gambit Part 2" (PDF). Chesscafe.com.
Tim McGrew (2003-09-22). "Gambits In Many Dimensions" (PDF). Chesscafe.com.

[Harding-1] T. D. Harding; G. S. Botterill (1977), The Italian Game, B. T. Batsford Limited, p. 128, ISBN 0-7134-3261-6

[2] Kasparov, Gary; Keene, Raymond (1982), Batsford Chess Openings, American Chess Promotions, p. 308, ISBN 0-7134-2112-6

[1]

[2]