Chess Opening Theory/1. e4/1...g6/2. d4/2...Bg7

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Modern Defence
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)

rnbqk1nr/ppppppbp/6p1/8/3PP3/8/PPP2PPP/RNBQKBNR

Modern Defence[edit]

White now has several choices of pawn structure to adopt. The most flexible move is 3. Nc3, giving White some time before deciding. However, it denies the access to the Averbakh Variation (3. c4), the Geller's System(3. c3 and 4. Nf3) and the Three Pawns Attack (3. c3 and 4. f4).

3. Nf3 is also possible and will transpose early into the other variations. 3. h4 is an attacking move that was discovered by Bobby Fischer. It aims to weaken Black's kingside pawn structure and make Black's king more vulnerable. Black may have difficulties castling in some lines arising from this move.

Theory table[edit]

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

1. e4 g6 2. d4 Bg7

3 4 5 7 8 9 10 11 12 13 14
Main Variation Nc3
-
=
c3
-
=
h4
-
=
Averbakh Variation c4
-
=
Nf3
-
=
e5
d6
Nf3
Bg4
exd6
Qxd6
c3
Nc6
Be2
Bxf3
Bxf3
Rd8
Qe2
Nf6
Na3
a6
Nc4
Qd7
Bf4
0-0
0-0-0
Nd5
=

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References[edit]