Chess puzzle (Checkmate)
Opening: Slav_Defense, Slav_Defense_Geller_Gambit
Moves: 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. e4 b5 6. a4 b4 7. Na2 a5 8. Bxc4
Bg4 9. Ne5 Bxd1 *
Position (FEN): rn1qkb1r/4pppp/2p2n2/p3N3/PpBPP3/8/NP3PPP/R1BbK2R w KQkq - 0 10
White to move.
Themes: Attacking f2 or f7 Middlegame Mate in 1 
Puzzle rating: 927
Best move: Bxf7#