Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Nf3 d5 3. e3 c5 4. b3 g6 5. Bb2 Bg7 6. dxc5 O-O 7. Bd3 Qc7 8. O-O
Qxc5 9. Bd4 Qc7 10. Nbd2 Nc6 11. Bb2 e5 12. Be2 Bf5 13. c4 Rad8 14. Qc1 Rc8 15.
a3 Qb6 16. c5 Qd8 17. b4 a6 18. Nxe5 Nxe5 19. Bxe5 Re8 20. Bd4 b6 21. Nb3 bxc5
22. bxc5 a5 23. a4 Rb8 24. Bb5 Re4 25. Qd2 Be6 26. Nxa5 Nh5 27. Nc6 Qh4 28.
Nxb8 Rg4 29. f3 Rxd4 30. exd4 Bxd4+ 31. Kh1 *
Position (FEN): 1N4k1/5p1p/4b1p1/1BPp3n/P2b3q/5P2/3Q2PP/R4R1K b - - 1 31
Black to move.
Themes: Pin Middlegame Mate in 1 
Puzzle rating: 988
Best move: Ng3#