D50
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
The Queen's Gambit Declined: Semi-Tarrasch Defense, Krause Variation is a chess opening classified under ECO code D50. It is reached after the moves 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 c5 5. Nf3 cxd4 6. Nxd4 e5 7. Ndb5 a6 8. Qa4.
It belongs to the Queen's Gambit Declined family — one of many ways the line can branch. Understanding the parent system’s plans is the fastest way to play this variation well.
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