Chess puzzle (Checkmate)
Opening: Benoni_Defense, Benoni_Defense_Kings_Pawn_Line
Moves: 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nge2 Bg7 8. Ng3
O-O 9. Be2 h5 10. O-O h4 11. Nh1 a6 12. Bg5 h3 13. g3 b5 14. Qc2 b4 15. Nd1
Nbd7 16. Bg4 Nxg4 17. Bxd8 Nde5 18. Ne3 *
Position (FEN): r1bB1rk1/5pb1/p2p2p1/2pPn3/1p2P1n1/4N1Pp/PPQ2P1P/R4RKN b - - 2 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 691
Best move: Nf3#