Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Zukertort_Variation
Moves: 1. d4 d5 2. Nf3 Bf5 3. g3 Nf6 4. Bg2 e6 5. O-O Ne4 6. b3 h5 7. Bb2 h4 8. Nxh4
Rxh4 9. gxh4 Qxh4 10. Qd3 Nd7 11. Qf3 Bd6 12. h3 g5 13. c4 dxc4 14. bxc4 O-O-O
15. Nd2 Nxd2 *
Position (FEN): 2kr4/pppn1p2/3bp3/5bp1/2PP3q/5Q1P/PB1nPPB1/R4RK1 w - - 0 16
White to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 400
Best move: Qxb7#