Chess puzzle (Crushing)
Moves: 1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. e3 Bg7 5. Bd3 O-O 6. O-O c5 7. dxc5 Nc6 8. e4
dxe4 9. Nxe4 Bg4 10. Nxf6+ Bxf6 11. Be3 Ne5 12. Be2 Nxf3+ 13. Bxf3 Qxd1 14.
Bxd1 Bxd1 15. Raxd1 Bxb2 16. Bh6 Rfd8 17. Rb1 Bd4 18. Rxb7 Bxc5 19. Bg5 f6 20.
Bh6 Rab8 21. Rfb1 *
Position (FEN): 1r1r2k1/pR2p2p/5ppB/2b5/8/8/P1P2PPP/1R4K1 b - - 3 21
Black to move.
Themes:  Endgame  
Puzzle rating: 1414
Best move: Rxb7