Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Old_Sicilian
Moves: 1. e4 c5 2. Nf3 Nc6 3. a3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Nf3 Nf6 7. e5 Ng4 8. Bf4
Ngxe5 9. Nxe5 Qa5+ 10. Nc3 Nxe5 11. Be2 O-O 12. O-O Nc6 13. Be3 Bxc3 14. bxc3
Qxc3 15. Bd2 Qe5 16. Re1 Qc7 17. Bc3 d6 18. Qd2 e5 19. Qh6 f5 *
Position (FEN): r1b2rk1/ppq4p/2np2pQ/4pp2/8/P1B5/2P1BPPP/R3R1K1 w - - 0 20
White to move.
Themes:  Middlegame  
Puzzle rating: 1331
Best move: Bc4+