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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
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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 game
2. Nf3
With 2...Nc6:
  • Four knights ( )
  • Italian game ( )
  • Spanish game ( )

With other 2nd moves:

2. Other
1. e4 c5
Sicilian defence
1. e4 ...other: