Chess puzzle (Crushing)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Symmetrical_Variation
Moves: 1. Nf3 Nf6 2. d4 d5 3. Nc3 e6 4. Bf4 Bb4 5. a3 Bxc3+ 6. bxc3 O-O 7. e3 b6 8.
Bb5 Ba6 9. Bxa6 Nxa6 10. O-O c5 11. Be5 Ne4 12. Qe1 f6 13. Bg3 Nb8 14. Nh4 Nd7
15. f3 Nxg3 16. Qxg3 Qe7 17. f4 e5 *
Position (FEN): r4rk1/p2nq1pp/1p3p2/2ppp3/3P1P1N/P1P1P1Q1/2P3PP/R4RK1 w - - 0 18
White to move.
Themes:  Middlegame  
Puzzle rating: 1099
Best move: Nf5