Chess puzzle (Checkmate)
Opening: Kings_Pawn_Game, Kings_Pawn_Game_Busch-Gass_Gambit
Moves: 1. e4 e5 2. Nf3 Bc5 3. Nxe5 Bxf2+ 4. Kxf2 Qh4+ 5. g3 Qxe4 6. Bg2 Qd4+ 7. Kf3
Nf6 8. Nc3 d6 9. Nd3 *
Position (FEN): rnb1k2r/ppp2ppp/3p1n2/8/3q4/2NN1KP1/PPPP2BP/R1BQ3R b kq - 1 9
Black to move.
Themes:  Opening Mate in 1 
Puzzle rating: 1467
Best move: Bg4#