Chess puzzle (Crushing)
Opening: Semi-Slav_Defense, Semi-Slav_Defense_Accelerated_Move_Order
Moves: 1. d4 d5 2. c4 c6 3. Nc3 e6 4. cxd5 cxd5 5. Nf3 h6 6. e4 Ne7 7. exd5 Nxd5 8.
Be2 a6 9. O-O Bd6 10. Nxd5 exd5 11. Re1 O-O 12. Qd3 Bd7 13. a4 Nc6 14. Bd2 Re8
15. Bd1 Rxe1+ 16. Bxe1 Qf6 17. Bc3 Bf5 18. Qe3 Be4 19. Rc1 *
Position (FEN): r5k1/1p3pp1/p1nb1q1p/3p4/P2Pb3/2B1QN2/1P3PPP/2RB2K1 b - - 6 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 1707
Best move: Bf4