Chess puzzle (Crushing)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Austrian_Defense
Moves: 1. d4 d5 2. c4 c5 3. Nc3 Nc6 4. Nf3 Nf6 5. Bg5 Bg4 6. e3 e6 7. Be2 Be7 8. Bf4
Bf5 9. cxd5 cxd4 10. Nxd4 Nxd5 11. Nxf5 Nxf4 12. exf4 exf5 13. O-O O-O 14. Bf3
Bf6 15. Rc1 Rc8 16. Nd5 Nd4 17. Nxf6+ Qxf6 18. Bxb7 *
Position (FEN): 2r2rk1/pB3ppp/5q2/5p2/3n1P2/8/PP3PPP/2RQ1RK1 b - - 0 18
Black to move.
Themes:  Middlegame  
Puzzle rating: 1230
Best move: Rxc1