Chess puzzle (Checkmate)
Moves: 1. d4 g6 2. Nf3 Bg7 3. e3 d6 4. Bd3 c6 5. Nbd2 b5 6. O-O Bg4 7. Qe2 Na6 8. c3
b4 9. h3 bxc3 10. bxc3 Bxf3 11. Qxf3 Nc7 12. a4 d5 13. Ba3 Nf6 14. Rfe1 O-O 15.
e4 e6 16. e5 Nd7 17. Bxf8 Bxf8 18. Qg3 c5 19. h4 cxd4 20. cxd4 Be7 21. h5 Bh4
22. Qg4 Qg5 23. Qh3 Qxh5 24. Rf1 Bg5 25. Nf3 Qxh3 26. gxh3 Bf4 27. Kh1 Nb6 28.
Rg1 Kf8 29. h4 h6 30. h5 g5 31. a5 Nc4 32. a6 Ke7 33. Nh2 Bxh2 34. Kxh2 Nd2 35.
Rg3 Rb8 36. Ra2 Ne4 37. Rg1 Rb3 38. Bc2 Rc3 39. Bb1 Kd7 40. f3 Rxf3 41. Rb2
Nxa6 42. Rb7+ Nc7 43. Rxa7 Rc3 44. Bxe4 dxe4 45. Rb1 e3 46. Rf1 Rd3 47. Rxf7+
Kc6 48. Rfxc7+ Kd5 49. Kg2 Rd2+ 50. Kf3 e2 51. Ra6 e1=Q *
Position (FEN): 8/2R5/R3p2p/3kP1pP/3P4/5K2/3r4/4q3 w - - 0 52
White to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 1944
Best move: Rd6#