Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Smith-Morra_Gambit
Moves: 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e5 5. Nf3 Nc6 6. Bc4 Be7 7. Nd5 Nf6 8.
Bg5 O-O 9. Nxe7+ Qxe7 10. O-O Qb4 11. Bxf6 gxf6 12. b3 b5 13. Bd3 Ne7 14. a3
Qc5 15. b4 Qb6 16. Nh4 Ng6 17. Nf5 a6 18. h4 d6 19. h5 Nf4 *
Position (FEN): r1b2rk1/5p1p/pq1p1p2/1p2pN1P/1P2Pn2/P2B4/5PP1/R2Q1RK1 w - - 1 20
White to move.
Themes:  Middlegame  
Puzzle rating: 1650
Best move: Qg4+