Chess puzzle (Crushing)
Moves: 1. g3 e5 2. Bg2 d5 3. h3 f5 4. e3 Nf6 5. Ne2 Be6 6. d4 e4 7. Nd2 Nbd7 8. a4 Bb4
9. c3 Ba5 10. b4 Bb6 11. a5 c6 12. axb6 axb6 13. Nb3 Rxa1 14. Nxa1 Bf7 15. Qa4
O-O 16. Qa7 Qa8 17. Qxa8 Rxa8 18. Nb3 Ra2 19. Nf4 g5 20. Ne2 Bh5 21. g4 fxg4
22. Ng3 gxh3 23. Nxh5 Nxh5 24. Rxh3 Nhf6 25. Rg3 g4 26. f3 h5 27. Bh3 *
Position (FEN): 6k1/1p1n4/1pp2n2/3p3p/1P1Pp1p1/1NP1PPRB/r7/2B1K3 b - - 1 27
Black to move.
Themes:  Middlegame  
Puzzle rating: 1798
Best move: exf3