Chess puzzle (Crushing)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nd4 4. Nxd4 exd4 5. c3 c6 6. cxd4 d5 7. exd5 cxd5 8.
Bb5+ Bd7 9. Qa4 a6 10. Bxd7+ Qxd7 11. Qxd7+ Kxd7 12. Nc3 Nf6 13. O-O Bb4 14. d3
Bxc3 15. bxc3 Rac8 16. Bd2 b5 17. a4 bxa4 18. Rxa4 Ra8 19. c4 Rhb8 20. Rfa1 Rb2
21. Be3 Ng4 22. Rxa6 *
Position (FEN): r7/3k1ppp/R7/3p4/2PP2n1/3PB3/1r3PPP/R5K1 b - - 0 22
Black to move.
Themes:  Endgame  
Puzzle rating: 1021
Best move: Rxa6