Chess puzzle (Checkmate)
Opening: Grob_Opening, Grob_Opening_Other_variations
Moves: 1. g4 d5 2. Nh3 Bxg4 3. Nf4 Nc6 4. Nd3 Nd4 5. Rg1 Qd7 6. Ne5 Qe6 7. Nxg4 *
Position (FEN): r3kbnr/ppp1pppp/4q3/3p4/3n2N1/8/PPPPPP1P/RNBQKBR1 b Qkq - 0 7
Black to move.
Themes: Pin Opening Mate in 1, Smothered Mate 
Puzzle rating: 1145
Best move: Nf3#