Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 c6 3. Nf3 e6 4. Nc3 Nf6 5. g3 Be7 6. Bg2 O-O 7. O-O Nbd7 8. e3
Re8 9. b3 Nf8 10. Bb2 Bd6 11. Ne5 Qe7 12. f4 Ba3 13. Qc1 Bxb2 14. Qxb2 N6d7 15.
Rae1 f6 16. Nd3 b6 17. e4 dxe4 18. Bxe4 Bb7 19. d5 cxd5 20. cxd5 e5 21. d6 Qxd6
22. Bxb7 Qxd3 23. Bxa8 Rxa8 24. Rd1 Qe3+ 25. Kg2 exf4 26. Rxf4 Ne5 27. Nd5 Qc5
28. b4 Qb5 29. Qb3 Kh8 30. Rd2 Rd8 31. Rff2 Qc6 32. Kg1 Nc4 33. Rd4 Ne5 34.
Nxf6 gxf6 35. Rxd8 Kg7 36. Qc2 Qe6 37. Qc7+ Nf7 38. Qb8 Qe1+ 39. Kg2 Qe4+ 40.
Kh3 *
Position (FEN): 1Q1R1n2/p4nkp/1p3p2/8/1P2q3/6PK/P4R1P/8 b - - 10 40
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 899
Best move: Ng5#