Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_London_System
Moves: 1. d4 Nf6 2. Nf3 d5 3. Bf4 c5 4. e3 Nc6 5. c4 Qb6 6. Nc3 Qxb2 7. Nb5 Ne4 8.
Nc7+ Kd8 9. Nxa8 *
Position (FEN): N1bk1b1r/pp2pppp/2n5/2pp4/2PPnB2/4PN2/Pq3PPP/R2QKB1R b KQ - 0 9
Black to move.
Themes: Attacking f2 or f7 Opening Mate in 1 
Puzzle rating: 1417
Best move: Qxf2#