Chess puzzle (Checkmate)
Opening: London_System, London_System_Other_variations
Moves: 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nc3 c6 5. e4 d6 6. Qd2 Nbd7 7. O-O-O b5 8.
Bd3 a5 9. Bh6 Bxh6 10. Qxh6 a4 11. a3 b4 12. axb4 a3 13. bxa3 Rxa3 14. Nb1 Ra2
15. h4 Qb6 16. h5 Qxb4 17. Qd2 *
Position (FEN): 2b1k2r/3npp1p/2pp1np1/7P/1q1PP3/3B1N2/r1PQ1PP1/1NKR3R b k - 1 17
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 831
Best move: Qb2#