Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Modern_Variations
Moves: 1. e4 c5 2. Nf3 d6 3. Bc4 e6 4. d4 a6 5. d5 b5 6. Be2 Bb7 7. Bf4 exd5 8. exd5
Nf6 9. O-O Nxd5 10. Qe1 Nxf4 *
Position (FEN): rn1qkb1r/1b3ppp/p2p4/1pp5/5n2/5N2/PPP1BPPP/RN2QRK1 w kq - 0 11
White to move.
Themes: Double Check Opening Mate in 1 
Puzzle rating: 735
Best move: Bxb5#