Chess puzzle (Crushing)
Opening: Sicilian_Defense, Sicilian_Defense_Alapin_Variation
Moves: 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. Nf3 Bg4 5. c4 Bxf3 6. gxf3 Qe5+ 7. Be2 Nf6 8.
Nc3 g6 9. d3 Bg7 10. f4 Qd4 11. Be3 Qd8 12. Qa4+ Qd7 13. Qb3 b6 14. O-O-O O-O
15. d4 cxd4 16. Bxd4 Qc7 17. Bf3 *
Position (FEN): rn3rk1/p1q1ppbp/1p3np1/8/2PB1P2/1QN2B2/PP3P1P/2KR3R b - - 2 17
Black to move.
Themes:  Middlegame  
Puzzle rating: 703
Best move: Qxf4+