Chess puzzle (Crushing)
Opening: Rat_Defense, Rat_Defense_Harmonist
Moves: 1. e4 d6 2. f4 g6 3. Nf3 Nf6 4. Nc3 Bg7 5. Bc4 O-O 6. O-O Bg4 7. h3 Bc8 8. Nd5
Nxd5 9. Bxd5 e6 10. Bb3 b6 11. Qe1 Bb7 12. d3 Nc6 13. c3 f5 14. exf5 gxf5 15.
Bxe6+ Kh8 16. Ng5 Qf6 17. Qh4 h6 18. Be3 Rae8 19. Bd4 *
Position (FEN): 4rr1k/pbp3b1/1pnpBq1p/5pN1/3B1P1Q/2PP3P/PP4P1/R4RK1 b - - 3 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 1336
Best move: Nxd4