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Chess Opening Theory/1. d4/1...d5/2. c4/2...c6/3. Nc3/3...Nf6/4. Nf3/4...e6/5. e3/5...Nbd7

Semi-Slav Defence: Main Line
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
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h

Position in Forsyth-Edwards Notation (FEN)
Moves: 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6 5. e3 Nbd7
ECO code: D43-D49
Parent: Queen's Gambit Declined

5...Nbd7

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This is a waiting move: Black is waiting for White to develop the light-squared bishop with 6. Bd3. Black does so in order to win some important tempi on White's bishop to make space for Black's light-squared bishop on b7. This is called the Meran variation.

White doesn't have to follow this plan however. White can play 6. Qc2, the Anti-Meran, to avoid this line and make Black's development of the light-squared bishop more difficult.

Theory table

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1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6 5. e3 Nbd7

6 7
Meran variation Bd3
dxc4
Bxc4
b5
Anti-Meran variation Qc2
Bd6

References

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v · t · e
Chess Opening Theory
1. e4 e5
Open games
3. Bb5
Spanish
3. Bc4
Italian
3. Nc3 Nf6
Four knights
Other
2...Nf6
Russian
2...d6
Philidor
Other
2. f4
King's gambit
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
1. d4 Nf6
Indian
1. d4 f5
Dutch
1. d4 ...other:
Flank
Unorthodox