Chess puzzle (Checkmate)
Opening: Italian_Game, Italian_Game_Scotch_Gambit
Moves: 1. e4 Nc6 2. Nf3 e5 3. d4 exd4 4. Bc4 Nf6 5. O-O Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8.
Nc3 Qa5 9. Nxe4 Be7 10. Nxd4 Nxd4 11. Qxd4 *
Position (FEN): r1b1k2r/ppp1bppp/8/q7/3QN3/8/PPP2PPP/R1B1R1K1 b kq - 0 11
Black to move.
Themes: Hanging Piece, Kingside Attack Middlegame Mate in 1 
Puzzle rating: 427
Best move: Qxe1#