Chess puzzle (Checkmate)
Opening: Catalan_Opening, Catalan_Opening_Other_variations
Moves: 1. d4 e6 2. c4 Nf6 3. g3 c6 4. Bg2 d5 5. Nf3 dxc4 6. Ne5 Qa5+ 7. Bd2 Qb6 8. Bc3
Qc7 9. Nxc4 Nd5 10. Bd2 Nd7 11. e4 Ne7 12. Bf4 Qd8 *
Position (FEN): r1bqkb1r/pp1nnppp/2p1p3/8/2NPPB2/6P1/PP3PBP/RN1QK2R w KQkq - 3 13
White to move.
Themes:  Opening Mate in 1, Smothered Mate 
Puzzle rating: 1400
Best move: Nd6#