Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Najdorf_Variation
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3
O-O 9. Bc4 b5 10. Bb3 Bb7 11. O-O-O Qb6 12. h4 b4 13. Na4 Qc7 14. Qh3 Bxe4 15.
Bxe6 Nc6 16. Bf5 Nxd4 17. Rxd4 *
Position (FEN): r4rk1/2q1bppp/p2p1n2/5BB1/Np1RbP1P/7Q/PPP3P1/2K4R b - - 0 17
Black to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 529
Best move: Qxc2#