D41
Queen's Gambit Declined: Semi-Tarrasch Defense, San Sebastian Variation
1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Nf3 cxd4 8. cxd4 Bb4+ 9. Bd2 Qa5
The Queen's Gambit Declined: Semi-Tarrasch Defense, San Sebastian Variation is a chess opening classified under ECO code D41. It is reached after the moves 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Nf3 cxd4 8. cxd4 Bb4+ 9. Bd2 Qa5.
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.
Play the Queen's Gambit Declined: Semi-Tarrasch Defense, San Sebastian Variation? See where you go wrong.
Deepline reviews your real games, finds the exact moves that cost you, and trains the fixes.
Analyze my games free →Related openings
Queen's Gambit Declined: Baltic Defense, Pseudo-SlavQueen's Gambit Declined: Austrian Attack, Salvio CountergambitQueen's Gambit Declined: Austrian DefenseQueen's Gambit Declined: Austrian Defense, Gusev CountergambitQueen's Gambit Declined: Austrian Defense, Haberditz VariationQueen's Gambit Declined: Baltic DefenseQueen's Gambit Declined: Baltic Defense, Argentinian GambitQueen's Gambit Declined: Baltic Defense, Pseudo-ChigorinQueen's Gambit Declined: Baltic Defense, Queen AttackQueen's Gambit Declined: Baltic Defense, Queen Attack Deferred