Chess puzzle (Checkmate)
Opening: Vienna_Game, Vienna_Game_Anderssen_Defense
Moves: 1. e4 e5 2. Nc3 Bc5 3. g3 Qf6 4. Bg2 *
Position (FEN): rnb1k1nr/pppp1ppp/5q2/2b1p3/4P3/2N3P1/PPPP1PBP/R1BQK1NR b KQkq - 2 4
Black to move.
Themes: Attacking f2 or f7 Opening Mate in 1 
Puzzle rating: 534
Best move: Qxf2#