# Chess Opening Theory/1. e4/1...e5/2. Nc3/2...Nf6/3. f4/3...d5/4. fxe5/4...Nxe4

< Chess Opening Theory‎ | 1. e4‎ | 1...e5‎ | 2. Nc3‎ | 2...Nf6‎ | 3. f4‎ | 3...d5‎ | 4. fxe5
Vienna Game
 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
Position in Forsyth-Edwards Notation(FEN)

rnbqkb1r/ppp2ppp/8/3pP3/4n3/2N5/PPPP2PP/R1BQKBNR

# Vienna Game

Tension builds up. The Black knight begins to be threatening. White should react quickly.

The common mistake is to take immediately the Black knight with 5. Nxe4. After 5...dxe4, White has too few options to pursue his development ; f3 square is under control, kings bishop is blocked and the d pawn cannot advance safely. Moreover, its going to be hard to defend the e5 pawn against Nc6. It looks possible to catch up with 6. d4 but it seems that Black has equalized.

5. Nf3 looks like the most solid move. It defends the e5 pawn (who is quite fragile now that he is away from home) and secure the strategic d4 square. It also prevents Qh4+ threat.

5. d3 is a good way to deal with the problem quickly. Blacks knight will have to retreat or, more likely, to be traded with Whites knight. White should be aware that Black can launch an aggressive attack with Bb4 and Qh4, sacrifying the knight, but preventing castling after 5...Bb4 6. dxe4 Qh4+ 7. Ke2 (7. g3 is bad because the White knight is pinned : 7...Qxe4+).

5. Qf3 is supposed to allow Nxe4 (or to force Black to play Nxc3) while playing an active game. But after 5...Nc6, things get complicated : 6. Nxe4 Nd4 and White must now defend the c2 pawn to avoid the fork (7. Qd3 dxe4 8. Qxe4 is a trap because of 8...Bf5).

## Theory table

For explanation of theory tables see theory table and for notation see algebraic notation.

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4

5
Nf3
-
=
d3
-
=
Qf3
-
=
Nxe4
-
=