Library/Openings/Slav Defense/Czech Variation/Wiesbaden Variation ECO D17
Opening· 12 plies

Slav Defense: Czech Variation, Wiesbaden Variation

An entry in the Encyclopedia of Chess Openings (ECO D17), reached after 12 half-moves: 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. Ne5 e6.

Slav Defense: Czech Variation, Wiesbaden Variation ECO D17
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Black rook
Black knight
Black queen
Black king
Black bishop
Black rook
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
Black knight
White knight
Black bishop
White pawn
Black pawn
White pawn
White knight
White pawn
White pawn
White pawn
White pawn
White pawn
White rook
White bishop
White queen
White king
White bishop
White rook
12/12
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  5. 3.
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  11. 6.
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About this opening

Slav Defense: Czech Variation, Wiesbaden Variation is an opening in the Encyclopedia of Chess Openings, classified under code D17. ECO group D (D00–D99) covers closed games and semi-closed games beginning 1.d4 d5, covering the Queen's Gambit, Slav, Grünfeld and related queen-pawn structures. This particular variation is reached after 12 half-moves from the starting position, with the move sequence 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. Ne5 e6.

It belongs to the Slav Defense family. Within that family this is a level-2 branch (the Czech Variation → Wiesbaden Variation line). The immediate parent line is Slav Defense: Czech Variation, transitioned via 6…e6.

The opening sequence in prose form: 1.d4 d5, 2.c4 c6, 3.Nf3 Nf6, 4.Nc3 dxc4, 5.a4 Bf5, 6.Ne5 e6. From this position exactly one named continuation is recorded in the encyclopaedia.