Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Smith-Morra_Gambit
Moves: 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e5 5. Nf3 Nc6 6. Bc4 h6 7. Be3 Nf6 8.
Qb3 Qe7 9. Nb5 Qb4+ 10. Bd2 Qxb3 11. Bxb3 Kd8 12. O-O-O a6 13. Nc3 Ke8 14. Nd5
Nxd5 15. exd5 Nd4 16. Nxd4 exd4 17. Rhe1+ Kd8 18. Ba5+ b6 *
Position (FEN): r1bk1b1r/3p1pp1/pp5p/B2P4/3p4/1B6/PP3PPP/2KRR3 w - - 0 19
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 850
Best move: Bxb6#