Chess puzzle (Advantage)
Opening: Alekhine_Defense, Alekhine_Defense_Scandinavian_Variation
Moves: 1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Qf3 e6 5. Bc4 c6 6. d4 b5 7. Bb3 a5 8. a4
b4 9. Nxd5 cxd5 10. Qg4 Nc6 11. Nf3 Qf6 12. c3 e5 13. dxe5 Bxg4 14. exf6 Be6
15. fxg7 Bxg7 16. c4 *
Position (FEN): r3k2r/5pbp/2n1b3/p2p4/PpP5/1B3N2/1P3PPP/R1B1K2R b KQkq - 0 16
Black to move.
Themes:  Middlegame  
Puzzle rating: 1140
Best move: dxc4