The Breyer Variation, Stein Attack is a variation of the Caro-Kann Defense, catalogued as ECO B10. The line runs 1. e4 c6 2. d3 d5 3. Nd2 g6 4. Ngf3 Bg7 5. g3 e5 6. Bg2 Ne7 7. O-O O-O 8. b4, reaching the position shown below after 15 half-moves.
Both sides have pawns in the centre (White on e4, Black on d5 and e5), and one pawn capture is available, so the structure has not settled yet. Development is level at three minor pieces each. It is Black to move after eight moves. Both kings have castled kingside, so play tends to shift to the centre and the opposite flank.
On the Caro-Kann Defense generally: A solid defense to 1.e4 that leads to sound pawn structures. Popular at all levels.
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.
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The Breyer Variation, Stein Attack goes 1. e4 c6 2. d3 d5 3. Nd2 g6 4. Ngf3 Bg7 5. g3 e5 6. Bg2 Ne7 7. O-O O-O 8. b4. It is a variation of the Caro-Kann Defense and is catalogued as ECO B10.
The Breyer Variation, Stein Attack is ECO B10. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Caro-Kann Defense.
Stockfish evaluates the position after 1. e4 c6 2. d3 d5 3. Nd2 g6 4. Ngf3 Bg7 5. g3 e5 6. Bg2 Ne7 7. O-O O-O 8. b4 at -0.07 at depth 18, which is balanced. 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.
Both sides have pawns in the centre (White on e4, Black on d5 and e5), and one pawn capture is available, so the structure has not settled yet. Development is level at three minor pieces each. It is Black to move. Both kings have castled kingside, so play tends to shift to the centre and the opposite flank.