Chess puzzle (Checkmate)
Moves: 1. c4 c5 2. Nc3 Nc6 3. d3 e5 4. Nf3 Nf6 5. g3 Qa5 6. Bd2 Qb6 7. b3 Be7 8. Bg2
Ng4 9. O-O O-O 10. Rb1 Nd4 11. Nd5 Qe6 12. Nxe7+ Qxe7 13. e3 Nf5 14. Ne1 Rb8
15. Qxg4 Nh6 16. Qf4 d6 17. Qf3 Bg4 18. Qe4 Bf5 19. Qd5 Be6 20. Qe4 Bf5 21. Qh4
f6 22. g4 Bxg4 23. Qg3 f5 24. f3 f4 25. Qf2 fxe3 26. Bxe3 e4 27. f4 exd3 28.
Nxd3 Nf5 29. Rbe1 Nh4 30. Qg3 Nxg2 31. Qxg2 Bf5 32. Nc1 Rf6 33. Kh1 Be4 34. Rf3
Rg6 35. Qh3 Qe6 36. Qxe6+ Rxe6 37. Rf1 Bxf3+ 38. Rxf3 Rbe8 39. Bd2 Rg6 40. f5
Rg4 41. h3 Rh4 42. Kh2 Rd4 43. Bf4 Ree4 44. Bg5 h6 45. Bd8 Rd1 46. Nd3 Re2+ 47.
Kg3 Rg1+ 48. Kf4 g5+ 49. fxg6 Rxg6 50. Kf5 Kh7 51. Nf4 *
Position (FEN): 3B4/pp5k/3p2rp/2p2K2/2P2N2/1P3R1P/P3r3/8 b - - 3 51
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1050
Best move: Re5#