Chess puzzle (Checkmate)
Opening: Rat_Defense, Rat_Defense_Harmonist
Moves: 1. e4 d6 2. f4 c6 3. Nf3 Nf6 4. Nc3 Bg4 5. Bc4 b5 6. Bb3 b4 7. e5 dxe5 8. Nxe5
bxc3 *
Position (FEN): rn1qkb1r/p3pppp/2p2n2/4N3/5Pb1/1Bp5/PPPP2PP/R1BQK2R w KQkq - 0 9
White to move.
Themes: Attacking f2 or f7 Middlegame Mate in 1 
Puzzle rating: 1299
Best move: Bxf7#