Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Classical_Variation
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. h3 e5 7. Nde2 Be7 8. g4
O-O 9. Ng3 a6 10. a4 Nd4 11. Nce2 *
Position (FEN): r1bq1rk1/1p2bppp/p2p1n2/4p3/P2nP1P1/6NP/1PP1NP2/R1BQKB1R b KQ - 2 11
Black to move.
Themes:  Opening Mate in 1 
Puzzle rating: 1474
Best move: Nf3#