< Chess Opening Theory < 1. e4
Open Game
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Position in Forsyth-Edwards Notation(FEN)

rnbqkbnr/pppp1ppp/8/4p3/4P3/8/PPPP1PPP/RNBQKBNR

Moves: 1.e4 e5
ECO code: C20–C99
Parent: King's Pawn Game
Responses:

Open Game

1...e5

1...e5 is Black's classical response to 1.e4. By mirroring White's move, Black grabs an equal share of the centre and scope to develop some pieces. 1...e5 is one of the few moves that directly interferes with White's plan of playing d4.

But the move's merit is also a drawback; the longer the position remains symmetrical, the longer White will have an advantage by moving first. Also, the pawn on e5 is undefended and it is easy for White to develop in a way that restricts Black's possible responses, by simply threatening to capture it.

Though the move is still common at every level, it saw a modest decline in popularity during the 20th century.

White's responses

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8{{{square}}} black rook{{{square}}} black knight{{{square}}} black bishop{{{square}}} black queen{{{square}}} black king{{{square}}} black bishop{{{square}}} black knight{{{square}}} black rook8
7{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black king{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn7
6{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king6
5{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king5
4{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} white pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king4
3{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} white knight{{{square}}} black king{{{square}}} black king3
2{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} black king{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn2
1{{{square}}} white rook{{{square}}} white knight{{{square}}} white bishop{{{square}}} white queen{{{square}}} white king{{{square}}} white bishop{{{square}}} black king{{{square}}} white rook1
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2.Nf3   (King's Knight)

The overwhelmingly popular move here, about 10 times more common than everything else combined, is 2.Nf3.

This threatens Black's undefended pawn while developing a piece in preparation for castling.

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8{{{square}}} black rook{{{square}}} black knight{{{square}}} black bishop{{{square}}} black queen{{{square}}} black king{{{square}}} black bishop{{{square}}} black knight{{{square}}} black rook8
7{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black king{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn7
6{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king6
5{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king5
4{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} white pawn{{{square}}} white pawn{{{square}}} black king{{{square}}} black king4
3{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king3
2{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} black king{{{square}}} black king{{{square}}} white pawn{{{square}}} white pawn2
1{{{square}}} white rook{{{square}}} white knight{{{square}}} white bishop{{{square}}} white queen{{{square}}} white king{{{square}}} white bishop{{{square}}} white knight{{{square}}} white rook1
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2.f4   (King's Gambit)

Another plan is to try and lever open the f-file for an attack on Black's weak f7 point with 2.f4, the King's Gambit.

This was popular in Victorian times and earlier, but Black has now found a few reliable ways of grabbing the proffered pawn and keeping it.

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8{{{square}}} black rook{{{square}}} black knight{{{square}}} black bishop{{{square}}} black queen{{{square}}} black king{{{square}}} black bishop{{{square}}} black knight{{{square}}} black rook8
7{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black king{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn7
6{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king6
5{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king5
4{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} ox{{{square}}} white pawn{{{square}}} ox{{{square}}} black king{{{square}}} black king4
3{{{square}}} black king{{{square}}} black king{{{square}}} white knight{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king3
2{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} black king{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn2
1{{{square}}} white rook{{{square}}} black king{{{square}}} white bishop{{{square}}} white queen{{{square}}} white king{{{square}}} white bishop{{{square}}} white knight{{{square}}} white rook1
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2.Nc3   (Vienna)
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8{{{square}}} black rook{{{square}}} black knight{{{square}}} black bishop{{{square}}} black queen{{{square}}} black king{{{square}}} black bishop{{{square}}} black knight{{{square}}} black rook8
7{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black king{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn7
6{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king6
5{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king5
4{{{square}}} black king{{{square}}} black king{{{square}}} white bishop{{{square}}} ox{{{square}}} white pawn{{{square}}} ox{{{square}}} black king{{{square}}} black king4
3{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king3
2{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} black king{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn2
1{{{square}}} white rook{{{square}}} white knight{{{square}}} white bishop{{{square}}} white queen{{{square}}} white king{{{square}}} black king{{{square}}} white knight{{{square}}} white rook1
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2.Bc4   (Bishop)

2.Nc3, the Vienna Game, and 2.Bc4, the Bishop's Opening, are simple alternative ways of developing a piece.

They don't give Black a particular problem to deal with, but they aren't bad moves either, and they keep open the option of either d4 or f4.

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8{{{square}}} black rook{{{square}}} black knight{{{square}}} black bishop{{{square}}} black queen{{{square}}} black king{{{square}}} black bishop{{{square}}} black knight{{{square}}} black rook8
7{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black king{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn7
6{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king6
5{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king5
4{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} white pawn{{{square}}} white pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king4
3{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king3
2{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} black king{{{square}}} black king{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn2
1{{{square}}} white rook{{{square}}} white knight{{{square}}} white bishop{{{square}}} white queen{{{square}}} white king{{{square}}} white bishop{{{square}}} white knight{{{square}}} white rook1
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2.d4   (Centre)

Or, White can smash the centre open with 2.d4 in order to develop pieces with great speed, sacrificing a pawn or two if necessary.

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8{{{square}}} black rook{{{square}}} black knight{{{square}}} black bishop{{{square}}} black queen{{{square}}} black king{{{square}}} black bishop{{{square}}} black knight{{{square}}} black rook8
7{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black king{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn7
6{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king6
5{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black pawn{{{square}}} black king{{{square}}} black king{{{square}}} white queen5
4{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} white pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king4
3{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king3
2{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} black king{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn2
1{{{square}}} white rook{{{square}}} white knight{{{square}}} white bishop{{{square}}} black king{{{square}}} white king{{{square}}} white bishop{{{square}}} white knight{{{square}}} white rook1
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2.Qh5   (Parham)
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8{{{square}}} black rook{{{square}}} black knight{{{square}}} black bishop{{{square}}} black queen{{{square}}} black king{{{square}}} black bishop{{{square}}} black knight{{{square}}} black rook8
7{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black king{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn7
6{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king6
5{{{square}}} black king{{{square}}} white bishop{{{square}}} black king{{{square}}} black king{{{square}}} black pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king5
4{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} white pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king4
3{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king3
2{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} black king{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn2
1{{{square}}} white rook{{{square}}} white knight{{{square}}} white bishop{{{square}}} white queen{{{square}}} white king{{{square}}} black king{{{square}}} white knight{{{square}}} white rook1
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2.Bb5   (Portuguese)
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8{{{square}}} black rook{{{square}}} black knight{{{square}}} black bishop{{{square}}} black queen{{{square}}} black king{{{square}}} black bishop{{{square}}} black knight{{{square}}} black rook8
7{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black king{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn7
6{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king6
5{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king5
4{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} white pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king4
3{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} white queen{{{square}}} black king{{{square}}} black king3
2{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} black king{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn2
1{{{square}}} white rook{{{square}}} white knight{{{square}}} white bishop{{{square}}} black king{{{square}}} white king{{{square}}} white bishop{{{square}}} white knight{{{square}}} white rook1
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2.Qf3   (Napoleon)
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8{{{square}}} black rook{{{square}}} black knight{{{square}}} black bishop{{{square}}} black queen{{{square}}} black king{{{square}}} black bishop{{{square}}} black knight{{{square}}} black rook8
7{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black king{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn7
6{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king6
5{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king5
4{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} white pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king4
3{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king3
2{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white knight{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn2
1{{{square}}} white rook{{{square}}} white knight{{{square}}} white bishop{{{square}}} white queen{{{square}}} white king{{{square}}} white bishop{{{square}}} black king{{{square}}} white rook1
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2.Ne2   (Alapin)
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8{{{square}}} black rook{{{square}}} black knight{{{square}}} black bishop{{{square}}} black queen{{{square}}} black king{{{square}}} black bishop{{{square}}} black knight{{{square}}} black rook8
7{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black king{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn7
6{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king6
5{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king5
4{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} white pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king4
3{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} white bishop{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king3
2{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} black king{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn2
1{{{square}}} white rook{{{square}}} white knight{{{square}}} white bishop{{{square}}} white queen{{{square}}} white king{{{square}}} black king{{{square}}} white knight{{{square}}} white rook1
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2.Bd3   (Tortoise)
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8{{{square}}} black rook{{{square}}} black knight{{{square}}} black bishop{{{square}}} black queen{{{square}}} black king{{{square}}} black bishop{{{square}}} black knight{{{square}}} black rook8
7{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black king{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn7
6{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king6
5{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king5
4{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} white pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king4
3{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king3
2{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white king{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn2
1{{{square}}} white rook{{{square}}} white knight{{{square}}} white bishop{{{square}}} white queen{{{square}}} black king{{{square}}} white bishop{{{square}}} white knight{{{square}}} white rook1
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2.Ke2   (Bongcloud)
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8{{{square}}} black rook{{{square}}} black knight{{{square}}} black bishop{{{square}}} black queen{{{square}}} black king{{{square}}} black bishop{{{square}}} black knight{{{square}}} black rook8
7{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black king{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn7
6{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king6
5{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king5
4{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} white pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king4
3{{{square}}} black king{{{square}}} black king{{{square}}} white pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king3
2{{{square}}} white pawn{{{square}}} white pawn{{{square}}} black king{{{square}}} white pawn{{{square}}} black king{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn2
1{{{square}}} white rook{{{square}}} white knight{{{square}}} white bishop{{{square}}} white queen{{{square}}} white king{{{square}}} white bishop{{{square}}} white knight{{{square}}} white rook1
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2.c3   (Lopez)
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8{{{square}}} black rook{{{square}}} black knight{{{square}}} black bishop{{{square}}} black queen{{{square}}} black king{{{square}}} black bishop{{{square}}} black knight{{{square}}} black rook8
7{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black king{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn7
6{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king6
5{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king5
4{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} white pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king4
3{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} white pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king3
2{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn{{{square}}} black king{{{square}}} black king{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn2
1{{{square}}} white rook{{{square}}} white knight{{{square}}} white bishop{{{square}}} white queen{{{square}}} white king{{{square}}} white bishop{{{square}}} white knight{{{square}}} white rook1
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2.d3   (Leonardis)
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8{{{square}}} black rook{{{square}}} black knight{{{square}}} black bishop{{{square}}} black queen{{{square}}} black king{{{square}}} black bishop{{{square}}} black knight{{{square}}} black rook8
7{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black king{{{square}}} black pawn{{{square}}} black pawn{{{square}}} black pawn7
6{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king6
5{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king5
4{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} white pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king4
3{{{square}}} black king{{{square}}} white pawn{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king{{{square}}} black king3
2{{{square}}} white pawn{{{square}}} black king{{{square}}} white pawn{{{square}}} white pawn{{{square}}} black king{{{square}}} white pawn{{{square}}} white pawn{{{square}}} white pawn2
1{{{square}}} white rook{{{square}}} white knight{{{square}}} white bishop{{{square}}} white queen{{{square}}} white king{{{square}}} white bishop{{{square}}} white knight{{{square}}} white rook1
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2.b3   (Santa Claus)

Other less common moves:

Statistics

Estimated next move popularity:Nf3 81%, f4 6%, Nc3 6%, Bc4 4%, d4 2% all others less than 0.5%

Theory table

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

1. e4 e5

2 3 4 5 6 7
Ruy Lopez Nf3
Nc6		 Bb5
a6		 Ba4
Nf6		 O-O
Be7		 Re1
b5		 Bb3
d6		 =
King's Gambit f4
exf4		 Nf3
g5		 h4
g4		 Ne5
Nf6		 Bc4
d5		 exd5
Bd6		 =
Vienna Game Nc3
Nf6		 f4
d5		 fxe5
Nxe4		 Nf3
Be7		 d4
Bb4		 Bd2
Bg4		 =
Bishops Opening Bc4
Nf6		 d4
exd4		 Nf3
Bb4+		 c3
dxc3		 bxc3
Bc5		 e5
d5		 =
Center Game d4
exd4		 Qxd4
Nc6		 Qe3
Nf6		 Nc3
Bb4		 Bd2
O-O		 O-O-O
Re8		 =
Parham Attack Qh5
Nc6		 Bc4
g6		 Qf3
Nf6		 Ne2
Bg7		 Nbc3
d6		 =

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References

    • Nunn's Chess Openings. 1999. John Nunn (Editor), Graham Burgess, John Emms, Joe Gallagher. ISBN 1-8574-4221-0.
    • Modern Chess Openings: MCO-14. 1999. Nick de Firmian, Walter Korn. ISBN 0-8129-3084-3.
    • Batsford Chess Openings 2 (1989, 1994). Garry Kasparov, Raymond Keene. ISBN 0-8050-3409-9.
     
    Chess Openings
    1. e4 e5
    1. e4 c5
    1. e4 other
    1. d4 Nf6
    1. d4 d5
    1. d4 other
    1.
    a3 · Na3 · a4 · b3 · b4 · c3 · Nc3 · c4 · d3 · d4 · e3 · e4 · f3 · Nf3 · f4 · g3 · g4 · h3 · Nh3 · h4
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