Chess puzzle (Checkmate)
Opening: English_Opening, English_Opening_Agincourt_Defense
Moves: 1. Nf3 d5 2. c4 e6 3. cxd5 exd5 4. e4 Nf6 5. exd5 Nxd5 6. Bc4 Nb6 7. Ne5 Nxc4
8. Nxc4 Bc5 9. Qe2+ Be6 10. a3 Nc6 11. b4 Nd4 12. Qd3 Bxc4 13. Qxc4 Qe7+ 14.
Kf1 b5 15. Qxc5 Qe2+ 16. Kg1 *
Position (FEN): r3k2r/p1p2ppp/8/1pQ5/1P1n4/P7/3PqPPP/RNB3KR b kq - 2 16
Black to move.
Themes:  Middlegame Back Rank Mate, Mate in 1 
Puzzle rating: 519
Best move: Qd1#