Chess puzzle (Crushing)
Moves: 1. e4 c5 2. Nf3 e6 3. d4 Nc6 4. d5 exd5 5. exd5 Na5 6. Be2 d6 7. h3 Nf6 8. c3
b6 9. b4 cxb4 10. cxb4 Nb7 11. Nc3 Bf5 12. Bd3 Qe7+ 13. Be3 Bxd3 14. Qxd3 a6
15. O-O Qc7 16. Ne4 Be7 17. Bg5 O-O 18. Bxf6 Bxf6 19. Nxf6+ gxf6 20. Qf5 Qc4
21. a3 Rfe8 22. Qd7 Qxd5 23. Rfd1 Rad8 24. Rxd5 Rxd7 25. Nd2 a5 26. Nc4 axb4
27. axb4 Rde7 28. Nxd6 Nxd6 29. Rxd6 Re1+ 30. Kh2 *
Position (FEN): 4r1k1/5p1p/1p1R1p2/8/1P6/7P/5PPK/R3r3 b - - 2 30
Black to move.
Themes: Hanging Piece Endgame, Rook Endgame  
Puzzle rating: 930
Best move: Rxa1