Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_London_System
Moves: 1. d4 d5 2. Bf4 Nf6 3. Nf3 e6 4. e3 c5 5. Nbd2 c4 6. c3 b5 7. b3 a5 8. bxc4
bxc4 9. Qa4+ Bd7 10. Qc2 Bc6 11. Ne5 Bb7 12. Qa4+ Nbd7 13. Bxc4 *
Position (FEN): r2qkb1r/1b1n1ppp/4pn2/p2pN3/Q1BP1B2/2P1P3/P2N1PPP/R3K2R b KQkq - 0 13
Black to move.
Themes:  Middlegame  
Puzzle rating: 1199
Best move: dxc4