Chess puzzle (Checkmate)
Moves: 1. d4 c5 2. dxc5 e5 3. Qd5 Nc6 4. c3 Nf6 5. Qc4 b6 6. cxb6 Qxb6 7. e3 Ba6 8.
Qa4 Bxf1 9. Kxf1 Be7 10. Nf3 a5 11. Nbd2 Qa6+ 12. Qc4 O-O 13. Qxa6 Rxa6 14. g3
d5 15. Kg2 e4 16. Nd4 Nxd4 17. exd4 Nd7 18. Nf1 h6 19. Ne3 Nb6 20. a4 Bg5 21.
h4 Bxe3 22. Bxe3 Nc4 23. b3 Nb6 24. Bc1 Rc8 25. Bd2 f5 26. Kf1 h5 27. Ke2 Nd7
28. Ke3 Nf6 29. Kf4 g6 30. Kg5 Kg7 31. Rhc1 Ng4 32. Be3 Nh2 33. c4 Nf3+ 34. Kf4
dxc4 35. bxc4 Rb6 36. c5 Rb3 37. d5 Kf6 38. d6 Rd3 39. Rab1 Ke6 40. Rb5 Rg8 41.
c6 g5+ 42. hxg5 Rxg5 43. Rxf5 *
Position (FEN): 8/8/2PPk3/p4Rrp/P3pK2/3rBnP1/5P2/2R5 b - - 0 43
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1646
Best move: Rg4#