Chess puzzle (Checkmate)
Moves: 1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. d3 O-O 5. Nbd2 d6 6. g3 e5 7. Bg2 c6 8. O-O
Nbd7 9. a4 Ne8 10. e4 f5 11. exf5 gxf5 12. Nh4 Nc5 13. Nc4 f4 14. b4 Ne6 15.
Bh3 Ng5 16. Bxc8 Qxc8 17. g4 f3 18. Nf5 Rxf5 19. gxf5 Qxf5 20. Kh1 Nh3 21. Nd2
e4 22. dxe4 Qg4 23. Nxf3 Bxb2 24. Rb1 Bg7 25. Qd3 Nf6 26. e5 Ne4 27. Qe3 Rf8
28. Rb3 Bxe5 29. c4 Rxf3 30. Qxf3 Nexf2+ 31. Rxf2 *
Position (FEN): 6k1/pp5p/2pp4/4b3/PPP3q1/1R3Q1n/5R1P/7K b - - 0 31
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1019
Best move: Qg1#