Semi-Slav Defense: Accelerated Meran Variation (D45)

The Accelerated Meran Variation is a variation of the Semi-Slav Defense, catalogued as ECO D45. The line runs 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 a6, reaching the position shown below after 10 half-moves.

Both sides have pawns in the centre (White on d4, Black on d5), and one pawn capture is available, so the structure has not settled yet. Development is level at two minor pieces each. It is White to move after five moves.

On the Semi-Slav Defense generally: A complex defense combining ideas from the Slav and Queen's Gambit Declined.

You can play through this variation move by move in your browser — Learn mode walks the line with an explanation at each step, and Drill mode replays it from memory so you find out whether you actually know it. No account is required.

Semi-Slav Defense: Accelerated Meran Variation — position after a6 h1g2f3e4d5c6b7a8
Position after 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 a6

Move order

#WhiteBlack
1d4d5
2c4c6
3Nc3Nf6
4e3e6
5Nf3a6

ECO: D45

Stockfish: +0.46 at depth 18

Practice this line free →

Position characteristics

Related Semi-Slav Defense lines

Frequently asked questions

What are the moves of the Accelerated Meran Variation?

The Accelerated Meran Variation goes 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 a6. It is a variation of the Semi-Slav Defense and is catalogued as ECO D45.

What is the ECO code for the Accelerated Meran Variation?

The Accelerated Meran Variation is ECO D45. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Semi-Slav Defense.

Is the Accelerated Meran Variation good for Black?

Stockfish evaluates the position after 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 a6 at +0.46 at depth 18, which is a slight pull for White, within normal opening margins. Engine evaluation is only a starting point — at club level the practical value of a line is mostly about whether you know its plans better than your opponent does.

What kind of position does the Accelerated Meran Variation lead to?

Both sides have pawns in the centre (White on d4, Black on d5), and one pawn capture is available, so the structure has not settled yet. Development is level at two minor pieces each. It is White to move.