Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Alapin_Variation
Moves: 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 d6 5. exd6 Qxd6 6. Na3 Bg4 7. Nb5 Qd8 8. h3
Bh5 9. g4 Bg6 10. Ne5 a6 11. Qa4 Nb6 *
Position (FEN): rn1qkb1r/1p2pppp/pn4b1/1Np1N3/Q5P1/2P4P/PP1P1P2/R1B1KB1R w KQkq - 2 12
White to move.
Themes: Double Check Middlegame Mate in 1 
Puzzle rating: 853
Best move: Nc7#