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    Chess Openings

    Semi-Slav Defense

    1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 · ECO D43

    Semi-Slav Defense position after 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6. White: pawn on c4, pawn on d4, knight on c3, knight on f3, pawn on a2, pawn on b2, pawn on e2, pawn on f2, pawn on g2, pawn on h2, rook on a1, bishop on c1, queen on d1, king on e1, bishop on f1, rook on h1. Black: rook on a8, knight on b8, bishop on c8, queen on d8, king on e8, bishop on f8, rook on h8, pawn on a7, pawn on b7, pawn on f7, pawn on g7, pawn on h7, pawn on c6, pawn on e6, knight on f6, pawn on d5.

    Semi-Slav Defense is a chess opening that arises after 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6. It is classified D43 in the ECO system, and the position after these moves has white to move. The Semi-Slav combines the Slav's c6 with the Queen's Gambit Declined's e6, giving Black an extremely solid centre at the cost of once again blocking in the light-squared bishop. It leads to some of the sharpest and most heavily analysed positions in all of chess.

    Strategic character

    Two main directions define it: the Meran, where Black plays dxc4 and b5 for queenside expansion, and the Botvinnik, an enormously complicated line where both kings come under fire and concrete knowledge matters more than general principles.

    Who should play it

    Experienced players willing to invest in theory. The Semi-Slav punishes improvisation more than most openings.

    Variations continuing from this position

    Each of these is a named opening reached by playing on from 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6. Open any of them to load the position on the board.

    Frequently asked questions

    What is the Semi-Slav Defense?
    The Semi-Slav Defense is a chess opening that arises after 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6. It is classified D43 in the ECO system. The Semi-Slav combines the Slav's c6 with the Queen's Gambit Declined's e6, giving Black an extremely solid centre at the cost of once again blocking in the light-squared bishop. It leads to some of the sharpest and most heavily analysed positions in all of chess.
    What are the moves of the Semi-Slav Defense?
    1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6. After these moves it is white to move.
    Is the Semi-Slav Defense good for beginners?
    Experienced players willing to invest in theory. The Semi-Slav punishes improvisation more than most openings.
    What variations come from the Semi-Slav Defense?
    Named continuations include Semi-Slav Defense Accepted, Semi-Slav Defense: Anti-Moscow Gambit, Semi-Slav Defense: Botvinnik Variation, Queen's Gambit Declined: Cambridge Springs Defense, Semi-Slav Defense: Moscow Variation. There are 17 named variations reachable from this position in total.

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