Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 g6 3. Bg5 Bg7 4. Nf3 d6 5. Nc3 Nbd7 6. e4 O-O 7. b4 h6 8. Bh4
a5 9. a3 c6 10. Bd3 e5 11. d5 axb4 12. axb4 Rxa1 13. Qxa1 Qb6 14. Qa5 g5 15.
Bg3 g4 16. Nh4 Qd4 17. Kd2 Nh5 18. Nf5 Qb6 19. Qxb6 Nxb6 20. Nxd6 Nxg3 21. hxg3
Rd8 22. Nf5 Bxf5 23. exf5 Re8 24. Ne4 cxd5 25. cxd5 Nxd5 26. b5 Rd8 27. Ke1 Nb4
28. Be2 Nc2+ 29. Kf1 Ra8 30. Kg1 Ra1+ 31. Kh2 Ra2 32. Bxg4 Nd4 33. Rf1 Nxb5 34.
Rb1 Ra5 35. Nc5 Nc3 36. Nxb7 Nxb1 37. Nxa5 Nd2 38. Nc6 e4 39. Kh3 Kf8 40. Be2
Bc3 41. Kg4 Kg7 42. Kf4 Kf6 43. g4 Ba1 44. Ke3 Nb3 45. Kxe4 Nc5+ 46. Kf3 Kg5
47. Ne5 Bxe5 48. Bc4 f6 49. Be2 Nb3 50. Ke3 Nd4 51. Bd1 Nc6 52. g3 Ba1 *
Position (FEN): 8/8/2n2p1p/5Pk1/6P1/4K1P1/5P2/b2B4 w - - 1 53
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 923
Best move: f4#