Queen's Gambit Declined: Semi-Tarrasch Defense, Krause Variation

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 c5 5.Nf3 cxd4 6.Nxd4 e5 7.Ndb5 a6 8.Qa4

ECO D50

The Queen's Gambit Declined: Semi-Tarrasch Defense, Krause Variation is a chess opening line in the Queen's Gambit Declined complex, reached after 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 c5 5.Nf3 cxd4 6.Nxd4 e5 7.Ndb5 a6 8.Qa4.

It is catalogued under code D50 in the Encyclopaedia of Chess Openings (ECO).

The defining move Qa4 is chosen by White on move 8.

Study this line with a grandmaster

This position is covered in the Opening Tricks Hall of Fame 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.