Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_French_Variation
Moves: 1. e4 c5 2. Nf3 e6 3. Nc3 Qc7 4. d4 cxd4 5. Qxd4 Nc6 6. Qc4 a6 7. Be3 b5 8. Qd3
Nb4 9. Qd2 Bb7 10. a3 Nc6 11. O-O-O Nf6 12. Bg5 b4 13. Bxf6 bxc3 14. Bxc3 a5
15. Bb5 Nb4 16. axb4 axb4 17. Bxb4 *
Position (FEN): r3kb1r/1bqp1ppp/4p3/1B6/1B2P3/5N2/1PPQ1PPP/2KR3R b kq - 0 17
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1183
Best move: Ra1#