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...dxc4/7. Bxc4/7...b5

Meran variation D47-D49 Semi-Slav 7...b5 Black expands on the queenside and makes the b7-square available for their bishop while gaining a tempo on White's bishop. White should retreat the bishop, there are three viable options: /8. Bd3/ is the main line, returning the bishop to the square it was originally positioned on. From this square, it supports the e4 pawn-push and glances at Black's kingside. /8. Be2/ is a more passive option. It can't be attacked as easily on e2 as on d3, but its also not as active in the attack. /8. Bb3/ is the most aggressive option, keeping the bishop on the a2-g8 diagonal. White can generate a lot of pressure on the e6 and f7 pawns, possibly sacrificing a knight for the initiative. This option is not guaranteed if Black knows the theory well, so Black can come out with a slight edge if they are well prepared. Theory table 8. Bd3 8. Be2 8. Bb3 References Semi-Slav Defence Meran Variation: 6.Bd3