411 REFERENCE · Wikibooks
Chess Opening Theory/1. d4/1...d5/2. c4/2...c6/3. Nc3/3...Nf6/4. Nf3/4...e6/5. e3/5...Nbd7/6. Bd3/6...dxc4
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Meran variation D47-D49 Semi-Slav
6...dxc4 · Meran variation
Black captures the c4 pawn with a tempo on White's bishop, forcing White to move it again.
/7. Bxc4/ is the only sensible move.
Theory table
7. Bxc4 b5 8. Bd3 7. ... ... 8. Be2 7. ... ... 8. Bb3
References
Semi-Slav Defence Meran Variation: 6.Bd3