Chess puzzle (Checkmate)
Opening: Zukertort_Opening, Zukertort_Opening_Tennison_Gambit
Moves: 1. Nf3 d5 2. e4 dxe4 3. Ng5 Nf6 4. Nc3 e6 5. Ngxe4 Bb4 6. Nxf6+ Qxf6 7. a3 Bc5
8. f3 Qh4+ 9. Ke2 Qf2+ 10. Kd3 Nc6 11. Qe2 *
Position (FEN): r1b1k2r/ppp2ppp/2n1p3/2b5/8/P1NK1P2/1PPPQqPP/R1B2B1R b kq - 6 11
Black to move.
Themes:  Opening Mate in 1 
Puzzle rating: 978
Best move: Qd4#