Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Other_variations
Moves: 1. e4 c5 2. d3 g6 3. Qf3 Bg7 4. Nc3 d6 5. Nd5 e6 6. Nf4 Qa5+ 7. Bd2 Qa4 8. b3
Qa3 9. Rb1 Nc6 10. c3 b5 11. Qd1 b4 12. Nfe2 Ne5 13. d4 *
Position (FEN): r1b1k1nr/p4pbp/3pp1p1/2p1n3/1p1PP3/qPP5/P2BNPPP/1R1QKBNR b Kkq - 0 13
Black to move.
Themes:  Opening Mate in 1, Smothered Mate 
Puzzle rating: 1015
Best move: Nd3#