Chess puzzle (Checkmate)
Opening: English_Defense, English_Defense_Other_variations
Moves: 1. d4 e6 2. c4 b6 3. Nc3 Bb7 4. Nf3 Nc6 5. e4 Qe7 6. a3 O-O-O 7. b4 f6 8. d5
exd5 9. cxd5 Ne5 10. Nxe5 Qxe5 11. Bb2 Ne7 12. Qc2 Qg5 13. Nb5 c6 14. dxc6 dxc6
15. Nxa7+ Kb8 16. Qa4 *
Position (FEN): 1k1r1b1r/Nb2n1pp/1pp2p2/6q1/QP2P3/P7/1B3PPP/R3KB1R b KQ - 2 16
Black to move.
Themes:  Opening Mate in 1 
Puzzle rating: 902
Best move: Qd2#