Slav Defense: Czech Variation

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5

ECO D17

The Slav Defense: Czech Variation is a chess opening line in the Slav Defense complex, reached after 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5.

It is catalogued under code D17 in the Encyclopaedia of Chess Openings (ECO).

The defining move Bf5 is chosen by Black on move 5.

7 named continuations branch from this position, including the Bled Attack and the Carlsbad Variation.

Named variations

• Slav Defense: Czech Variation, Bled Attack — ECO D17
• Slav Defense: Czech Variation, Carlsbad Variation — ECO D17
• Slav Defense: Czech Variation, Krause Attack — ECO D17
• Slav Defense: Czech Variation, Wiesbaden Variation — ECO D17
• Slav Defense: Czech Variation, Classical System — ECO D18
• Slav Defense: Czech Variation, Lasker Variation — ECO D18
• Slav Defense: Czech Variation, Dutch Variation — ECO D19

Study this line with a grandmaster

This position is covered in the Slav Defense course: a GM-authored repertoire you study move by move, then practice against a human-like AI opponent.

Every chess term used here is defined in the chess terms glossary. Browse all opening courses or the full ECO code index.