Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Smith-Morra_Gambit
Moves: 1. e4 c5 2. d4 cxd4 3. Qxd4 Nc6 4. Qd2 e5 5. Nc3 Nf6 6. Bc4 Bb4 7. Nf3 Nxe4 8.
Qd5 Nd6 9. Bb3 O-O 10. O-O b6 11. a3 Bxc3 12. bxc3 Qc7 13. Nxe5 Nxe5 14. Qxe5
Bb7 15. Bf4 Qc6 16. f3 Nb5 *
Position (FEN): r4rk1/pb1p1ppp/1pq5/1n2Q3/5B2/PBP2P2/2P3PP/R4RK1 w - - 1 17
White to move.
Themes:  Middlegame  
Puzzle rating: 1855
Best move: c4