Chess puzzle (Crushing)
Moves: 1. d4 d5 2. Bf4 Nf6 3. Nf3 Nc6 4. e3 Bg4 5. c3 e6 6. Bd3 Be7 7. Nbd2 O-O 8. h3
Bh5 9. O-O Bd6 10. Bxd6 Qxd6 11. Qc2 Ne7 12. Rfe1 Rac8 13. b4 a6 14. a4 b6 15.
Bxa6 Ra8 16. Be2 c5 17. bxc5 bxc5 18. a5 c4 19. Nf1 Ne4 20. Ra4 Rfb8 21. Rb1 *
Position (FEN): rr4k1/4nppp/3qp3/P2p3b/R1pPn3/2P1PN1P/2Q1BPP1/1R3NK1 b - - 5 21
Black to move.
Themes:  Middlegame  
Puzzle rating: 1348
Best move: Rxb1