411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. d4/3...exd4/4. Bc4/4...Bc5
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Scotch Gambit, Haxo Gambit rd bd qd kd nd rd pd pd pd pd pd pd pd nd bd bl pd pl nl pl pl pl pl pl pl rl nl bl ql kl rl
Scotch Gambit, Haxo Gambit
With 4...Bc5 Black develops the dark squared bishop to a good square where it defends the pawn on d4. From here White has 3 main responses:
5. c3
This continues in the spirit of the Scotch Gambit, offering Black another pawn, and threatening to take back on d4 with a broad two-pawn centre. However, Black should not continue with 5...dxc3? because of 6. Bxf7+! in which White makes use of the powerful bishop on c4, and the vulnerability of black's bishop on c5, and will regain both of the pawns sacrificed with a crushing position. Instead, Black should continue with 5...Nf6, which transposes to the Giuoco Piano.
5. O-O
White focuses on rapid development instead of taking the pawn back immediately, aiming to play c3 later on, when the usual Bb4+ isn't possible in this case. If Black continues with 5...Nf6 then the game transposes into the Max Lange Attack which is considered good for white, therefore Black usually continues with 5...d6, resulting in some crazy positions in which both kings can become exposed.
5. Ng5
This is the Sarratt Variation, in which White attacks the f7 pawn for the second time, taking advantage of the fact that black's knight is still on g8, and they cannot deal with the threat by castling. Black almost always defends the pawn with 5...Nh6, in which usually a trade of minor pieces occurs, in which white also takes advantage of the vulnerable position of the bishop on c5.
Theory table
.
1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Bc5
5
6789
Scotch Gambit
c3Nf6
cxd4
Bb4+Bd2
Bxd2+Nbxd2
d5exd5
Nxd5=Haxo GambitO-O
d6c3
Bg4Qb3
Bxf3Bxf7+
Kf8gxf3
Ne5∞Sarratt VariationNg5
Nh6Nxf7
Nxf7Bxf7+
Kxf7Qh5+
g6Qxc5
d5∞
References