Chess puzzle (Checkmate)
Opening: French_Defense, French_Defense_Queens_Knight
Moves: 1. e4 e6 2. Nc3 Bb4 3. Nge2 c6 4. a3 Ba5 5. b4 Bb6 6. Bb2 Qf6 7. Na4 *
Position (FEN): rnb1k1nr/pp1p1ppp/1bp1pq2/8/NP2P3/P7/1BPPNPPP/R2QKB1R b KQkq - 4 7
Black to move.
Themes: Attacking f2 or f7 Opening Mate in 1 
Puzzle rating: 877
Best move: Qxf2#