Chess puzzle (Crushing)
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nxd4 5. Qxd4 d6 6. Nc3 Nf6 7. Bg5 Be7 8.
O-O-O Be6 9. Bc4 O-O 10. Bxe6 fxe6 11. f3 b5 12. Nxb5 Rb8 13. Nxa7 c5 14. Qa4
Qb6 15. b3 Ra8 16. Qc4 Rxa7 17. Qxe6+ Rf7 18. a4 Qb4 19. e5 Qa3+ 20. Kb1 Rxa4 *
Position (FEN): 6k1/4brpp/3pQn2/2p1P1B1/r7/qP3P2/2P3PP/1K1R3R w - - 0 21
White to move.
Themes:  Middlegame  
Puzzle rating: 1808
Best move: bxa4