Chess Opening Theory/1. e4/1...c6/2. d4/2...d5/3. Nd2/3...dxe4

Modern variation
	a b c d e f g h 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 a b c d e f g h
	Position in Forsyth-Edwards Notation (FEN) rnbqkbnr/pp2pppp/2p5/8/3Pp3/8/PPPN1PPP/R1BQKBNR
	Moves: 1. e4 c6 2. d4 d5 3. Nd2 dxe4
	ECO code: B12
	Parent: Caro-Kann → 3. Nd2

3...dxe4

4. Nxe4, retaking the pawn and defending d4, transposes into the main line 3. Nc3 variation of the Caro-Kann.

Theory table

1.e4 c6 2.d4 d5 3.Nd2 dxe4

	4	5	6	7
Main Line	Nxe4 Bf5	Ng3 Bg6	h4 h6	Nf3 Nd7	=

Wikipedia has related information at Caro–Kann Defence.

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Chess Opening Theory

1. e4 e5
Open games

2. Nf3

2...Nc6

3. Bb5
Spanish

Berlin →
- Anti-Berlin
- Beverwijk
- L'Hermet → Berlin Wall

Morphy →
- Exchange
- Closed →
- Open
- Arkhangelsk
- Anderssen
- Mackenzie

3. Bc4
Italian

Giuoco Piano →

Two knights defence →
- Open
- Knight attack →
  - Fried liver
  - Polerio

3. Nc3
Three knights

Four knights →
- Glek
- Italian
- Scotch → Belgrade
- Spanish
- Naroditsky !?
- Halloween ?!

Other

2...Nf6
Russian

2...d6
Philidor

Other

2. f4
King's gambit

2...exf4
Accepted

King's knight →
- Kieseritzky
- Schallop
- Modern
- Fischer
- Lolli ?
- Muzio ?
Bishop's →
- Cozio

Other
Declined

2. Nc3
Vienna

Other

1. e4 c5
Sicilian

1. e4 e6
French

1. e4 c6
Caro-Kann

1. e4 other

1. d4 d5
Closed games

2. c4
Queen's gambit

2. Nc3

2. other

1. d4 Nf6
Indian

2. c4 e6

2. c4 g6

2. c4 other

2. Nf3

2. other:

1. d4 f5
Dutch

1. d4 ...other:

1. Nf3
Zukertort

Flank

Unorthodox