Chess puzzle (Checkmate)
Moves: 1. Nf3 e6 2. e4 c5 3. g3 Nc6 4. Bg2 Nf6 5. d3 d5 6. e5 Nd7 7. Bf4 Qa5+ 8. c3 h6
9. Nbd2 g5 10. Nb3 Qb6 11. Be3 Ncxe5 12. Nxe5 Nxe5 13. Nxc5 Bxc5 14. Bxc5 Qxc5
15. d4 Qd6 16. dxe5 Qxe5+ 17. Qe2 Qxe2+ 18. Kxe2 Bd7 19. Rhe1 Bb5+ 20. Kd2
O-O-O 21. b3 d4 22. c4 Bd7 23. Re5 Bc6 24. Bxc6 bxc6 25. Rc5 Kb7 26. Kd3 f6 27.
Re1 Rd6 28. b4 e5 29. a4 Rhd8 30. b5 Kb6 31. Rxc6+ Rxc6 32. bxc6 Kxc6 33. Rb1
Rd7 34. Rb8 Rg7 35. Rf8 Rg6 36. Rf7 Kb6 37. a5+ Kxa5 38. Rxa7+ Kb6 39. Rf7 Kc5
40. g4 Kb4 41. f3 Kc5 42. h3 Kd6 43. Ke4 Ke6 44. Rf8 Rg7 45. Re8+ Re7 46. Rh8
Rc7 47. Rxh6 Rxc4 48. h4 Rc3 49. hxg5 *
Position (FEN): 8/8/4kp1R/4p1P1/3pK1P1/2r2P2/8/8 b - - 0 49
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 612
Best move: Re3#