Chess Opening Theory/1. d4/1...Nf6/2. c4/2...g6/3. Nc3/3...Bg7/4. e4/4...d6/5. Nf3/5...O-O/6. Be2/6...e5

King's Indian Defence: Orthodox Variation
a b c d e f g h
8a8 black rookb8 black knightc8 black bishopd8 black queene8 black kingf8 black rookg8 black kingh8 black king8
7a7 black pawnb7 black pawnc7 black pawnd7 black kinge7 black kingf7 black pawng7 black bishoph7 black pawn7
6a6 black kingb6 black kingc6 black kingd6 black pawne6 black kingf6 black knightg6 black pawnh6 black king6
5a5 black kingb5 black kingc5 black kingd5 black kinge5 black pawnf5 black kingg5 black kingh5 black king5
4a4 black kingb4 black kingc4 white pawnd4 white pawne4 white pawnf4 black kingg4 black kingh4 black king4
3a3 black kingb3 black kingc3 white knightd3 black kinge3 black kingf3 white knightg3 black kingh3 black king3
2a2 white pawnb2 white pawnc2 black kingd2 black kinge2 white bishopf2 white pawng2 white pawnh2 white pawn2
1a1 white rookb1 black kingc1 white bishopd1 white queene1 white kingf1 black kingg1 black kingh1 white rook1
a b c d e f g h
Position in Forsyth-Edwards Notation (FEN)
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5

6. e5

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The move e5 from Black attacks the center and gains space. The main line continues by White castling kingside to get the king away from the center, then Black plays Nc6 to gain space and develop a piece, which White immediately kicks with d5, forcing it to e7. From there, the game can branch off in several different ways.

b4 makes a pawn storm on the queenside, with the rooks developing to support in the attack. In some games, Black's kingside knight goes to h5 then back to f6 on its own volition to push the f-pawn to f5 to destabilize the center and prepare g4.

Ne1 eventually rotates the knight to the center after Nd3 where it can defend better against Black's counterattack, be protected from g4as well as attack in the future. Black's kingside knight also moves to allow f5.

Theory Table

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1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5

7 8 9 10
O-O

Nc6

d5

Ne7

Ne1

Nd7

Be3

f5

+/=
...

...

...

Nd4

Nxd4

exd4

Qxd4

Nd7

+/=

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