Queen's Gambit Declined: Semmering Variation

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 e6 5.Nbd2 Nbd7 6.Bd3 c5

ECO D30

The Queen's Gambit Declined: Semmering Variation is a chess opening line in the Queen's Gambit Declined complex, reached after 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 e6 5.Nbd2 Nbd7 6.Bd3 c5.

It is catalogued under code D30 in the Encyclopaedia of Chess Openings (ECO).

The defining move c5 is chosen by Black on move 6.

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.