Chess puzzle (Checkmate)
Opening: Rat_Defense, Rat_Defense_Small_Center_Defense
Moves: 1. e4 e6 2. d4 d6 3. Nc3 b6 4. Nf3 Bb7 5. Bd3 Nd7 6. O-O g6 7. e5 Ne7 8. Bg5 h6
9. exd6 cxd6 10. Nb5 hxg5 *
Position (FEN): r2qkb1r/pb1nnp2/1p1pp1p1/1N4p1/3P4/3B1N2/PPP2PPP/R2Q1RK1 w kq - 0 11
White to move.
Themes:  Opening Mate in 1, Smothered Mate 
Puzzle rating: 1144
Best move: Nxd6#