Chess puzzle (Crushing)
Opening: Grunfeld_Defense, Grunfeld_Defense_Exchange_Variation
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. e5 c5 8. f4
Qa5 9. Bd2 O-O 10. Nf3 cxd4 11. cxd4 Qd5 12. Be3 Bf5 13. Bd3 Be4 14. O-O Nc6
15. Qd2 Bxf3 16. Rxf3 Nxd4 17. Bxd4 *
Position (FEN): r4rk1/pp2ppbp/6p1/3qP3/3B1P2/3B1R2/P2Q2PP/R5K1 b - - 0 17
Black to move.
Themes:  Middlegame  
Puzzle rating: 771
Best move: Qxd4+