Chess puzzle (Crushing)
Opening: Ruy_Lopez, Ruy_Lopez_Bird_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O c6 6. Be2 d5 7. e5 f6 8.
exf6 Nxf6 9. c3 dxc3 10. dxc3 Bd6 11. Bg5 O-O 12. Bd3 h6 13. Bh4 Qc7 14. Bg3
Bg4 15. Bxd6 Qxd6 16. Qc2 Rae8 17. Nd2 Be2 18. Rfe1 *
Position (FEN): 4rrk1/pp4p1/2pq1n1p/3p4/8/2PB4/PPQNbPPP/R3R1K1 b - - 5 18
Black to move.
Themes:  Middlegame  
Puzzle rating: 1995
Best move: Ng4