Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Nf6/4. Ng5/4...d5/5. exd5/5...Nd4/6. c3/6...b5/7. Bf1/7...Nxd5/8. Ne4/8...Qh4/9. Ng3

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< Chess Opening Theory‎ | 1. e4‎ | 1...e5‎ | 2. Nf3‎ | 2...Nc6‎ | 3. Bc4‎ | 3...Nf6‎ | 4. Ng5‎ | 4...d5‎ | 5. exd5‎ | 5...Nd4‎ | 6. c3‎ | 6...b5‎ | 7. Bf1‎ | 7...Nxd5‎ | 8. Ne4‎ | 8...Qh4
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Two Knights Defence:Fritz variation
a b c d e f g h
8 a8 b8 c8 d8 e8 f8 g8 h8 8
7 a7 b7 c7 d7 e7 f7 g7 h7 7
6 a6 b6 c6 d6 e6 f6 g6 h6 6
5 a5 b5 c5 d5 e5 f5 g5 h5 5
4 a4 b4 c4 d4 e4 f4 g4 h4 4
3 a3 b3 c3 d3 e3 f3 g3 h3 3
2 a2 b2 c2 d2 e2 f2 g2 h2 2
1 a1 b1 c1 d1 e1 f1 g1 h1 1
a b c d e f g h
Position in Forsyth-Edwards Notation(FEN)

r1b1kb1r/p1p2ppp/8/1p1np3/3n3q/2P3N1/PP1P1PPP/RNBQKB1R

Two Knights Defence:Fritz variation[edit]

9 Ng3
The Knight comes to add protection against the Black Queen. Black's Knight on d4 is now vulnerable, but Black having more development can aggressively create threats. The choice is to move the d4 Knight or create further complications, for a long time 9...Bg4 was consider good but later analysis has indicated that with correct play White has a clear plus.

Theory table[edit]

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

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 b5 6.Bf1 Nd4 7.c3 Nxd5 8.Ne4 Qh4
9 10 11 12
Ng3
Nc6
Bxb5
Bb7
O-O
O-O-O
...
Ne6
Bxb5
Kd8
d4
Bb7
dxe5
Kc8
+/-
...
Bb7
cxd4
O-O-O
Be2
Nf4
O-O
Rxd4
+/-
...
Bg4
f3
e4
cxd4
Bd6
Bxb5+
Kd8
+/-

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References[edit]

  • Nunn's Chess Openings. 1999. John Nunn (Editor), Graham Burgess, John Emms, Joe Gallagher. ISBN 1-8574-4221-0.