Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Normal_Defense
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. e3 c5 5. Nf3 Be7 6. Bd3 O-O 7. O-O Bd6 8. b3
Nbd7 9. Bb2 Re8 10. Re1 e5 11. Nxd5 Nxd5 12. cxd5 *
Position (FEN): r1bqr1k1/pp1n1ppp/3b4/2pPp3/3P4/1P1BPN2/PB3PPP/R2QR1K1 b - - 0 12
Black to move.
Themes:  Opening  
Puzzle rating: 1278
Best move: e4