Chess puzzle (Checkmate)
Moves: 1. d4 e6 2. Nd2 c5 3. Ngf3 cxd4 4. Nxd4 Bc5 5. N4f3 Qb6 6. a3 *
Position (FEN): rnb1k1nr/pp1p1ppp/1q2p3/2b5/8/P4N2/1PPNPPPP/R1BQKB1R b KQkq - 0 6
Black to move.
Themes: Attacking f2 or f7 Opening Mate in 1 
Puzzle rating: 951
Best move: Bxf2#