Chess puzzle (Checkmate)
Opening: Blackmar-Diemer_Gambit, Blackmar-Diemer_Gambit_von_Popiel_Gambit
Moves: 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. Bg5 h6 5. Bxf6 exf6 6. Nxe4 Bf5 7. Nc3 Bb4 8.
Qe2+ Be6 9. Qb5+ Nc6 10. O-O-O Bxc3 11. bxc3 Qd5 12. Qxb7 O-O 13. c4 Qg5+ 14.
Rd2 Rab8 15. Qxc6 Rb1+ 16. Kxb1 Qxd2 17. Qxc7 Qb4+ 18. Kc1 Rb8 19. Bd3 *
Position (FEN): 1r4k1/p1Q2pp1/4bp1p/8/1qPP4/3B4/P1P2PPP/2K3NR b - - 4 19
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1472
Best move: Qe1#