Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 a6 7. Be2 Nf6 8.
Qd2 d6 9. h4 Bg4 10. f3 Bd7 11. g4 h5 12. g5 Ng8 13. O-O-O Qc7 14. Nd5 Qd8 15.
Kb1 e6 16. Nxc6 Bxc6 17. Nb6 Rb8 18. Qxd6 Qxd6 19. Rxd6 Ke7 20. Rhd1 Be5 21.
R6d2 Bg3 22. Bc5+ Ke8 23. Bd4 e5 24. Bc5 Bxh4 25. Nd7 Bxd7 26. Rxd7 Bxg5 27.
Ba7 Rd8 28. Rxb7 Rxd1+ 29. Bxd1 h4 30. Rb8+ Ke7 31. Bc5+ Kf6 32. Rb6+ Kg7 33.
Bd6 Bf6 34. f4 exf4 35. Bxf4 h3 36. Bh2 Nh6 37. Rxa6 Re8 38. Bf3 g5 39. c4 g4
40. Bh1 Bh4 41. Ra3 f5 42. Ra7+ Kg6 43. exf5+ Nxf5 44. Ra6+ Kg5 45. Bd5 g3 46.
Bxg3 Nxg3 47. Ra5 Kf4 48. Ra7 h2 49. Rf7+ Ke3 50. Rf3+ Kd2 51. Rf2+ Kd3 52.
Rxh2 *
Position (FEN): 4r3/8/8/3B4/2P4b/3k2n1/PP5R/1K6 b - - 0 52
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 400
Best move: Re1#