Chess puzzle (Crushing)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. O-O Bc5 5. Re1 d6 6. h3 O-O 7. c3 Na5 8. Bd3
Nc6 9. a4 a5 10. b3 Re8 11. Ba3 Ba7 12. Nh2 d5 13. exd5 Qxd5 14. Be2 e4 15. Bg4
Bxg4 16. Nxg4 Qf5 17. Nxf6+ Qxf6 18. Re2 Rad8 19. Qe1 h6 20. Ra2 Qf4 21. Bc1 *
Position (FEN): 3rr1k1/bpp2pp1/2n4p/p7/P3pq2/1PP4P/R2PRPP1/1NB1Q1K1 b - - 3 21
Black to move.
Themes:  Middlegame  
Puzzle rating: 1150
Best move: Rd3