Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Grand_Prix_Attack
Moves: 1. Nc3 c5 2. e4 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bc4 e6 6. a3 Nge7 7. Ba2 d5 8. d3
O-O 9. h4 dxe4 10. Nxe4 Nd4 11. h5 Nxf3+ 12. Qxf3 Nf5 13. hxg6 hxg6 14. Qh3 Re8
15. Bd2 Qd4 16. O-O-O *
Position (FEN): r1b1r1k1/pp3pb1/4p1p1/2p2n2/3qNP2/P2P3Q/BPPB2P1/2KR3R b - - 5 16
Black to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 659
Best move: Qxb2#