Semi-Slav Defense, Chigorin Defense

In this Chigorin Defense, the f1- and f8-bishops reach d3 and d6 inside a Semi-Slav structure. In algebraic notation, B means bishop, so Bd3 and Bd6 name those destination squares. Black has already placed pawns on c6 and e6 around the d5-pawn, forming a triangle in which both support the central pawn, although the c8-bishop is temporarily shut in. From d6, Black’s bishop helps control e5, points toward h2, and prepares castling, the combined king-and-rook move used to improve king safety.

The center revolves around White's e4 advance. If White plays it under favorable conditions, White gains space and may open lines for the pieces. The black bishop on d6 is placed to answer with ...e5, confronting the two centers, or to support exchanges on e4. A pawn break works only when the pieces are ready for the lines it will open.

Plans after development

• White often castles, plays Qc2, and prepares e4 while watching possible pressure on h2.
• Black may castle, capture on c4 at a suitable moment, and expand with ...b5 and ...Bb7.
• If the center closes, both sides maneuver. If e4 and ...e5 open it, piece activity becomes the priority.

The Stoltz Variation places White's queen on c2 before committing the bishop to d3, preserving more options. Here Bd3 has already been played and Black answers symmetrically with ...Bd6.