Chess puzzle (Crushing)
Opening: Blackmar-Diemer_Gambit, Blackmar-Diemer_Gambit_Ryder_Gambit
Moves: 1. d4 Nf6 2. Nc3 d5 3. e4 dxe4 4. f3 exf3 5. Qxf3 e6 6. a3 Be7 7. Bd3 Qxd4 8.
Be3 Qg4 9. Qf2 Nc6 10. h3 Qh5 11. Nf3 Ne5 12. Nxe5 Qxe5 13. O-O-O Bxa3 14. Bd4
Qg5+ 15. Kb1 Be7 16. Rhf1 O-O 17. h4 Qa5 18. Qf3 Nd5 19. Qg3 Nxc3+ *
Position (FEN): r1b2rk1/ppp1bppp/4p3/q7/3B3P/2nB2Q1/1PP3P1/1K1R1R2 w - - 0 20
White to move.
Themes:  Middlegame  
Puzzle rating: 1299
Best move: Bxc3