Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 e5 3. dxe5 d4 4. a3 Nc6 5. Nf3 Be6 6. e3 dxe3 7. Qxd8+ Rxd8 8.
Bxe3 Nge7 9. Be2 Nf5 10. O-O Nxe3 11. fxe3 Bc5 12. Nc3 Bxe3+ 13. Kh1 Nd4 14.
Nxd4 Bxd4 15. Nd5 Bxe5 16. Bf3 c6 17. Rfe1 Bxb2 18. Nc7+ Kd7 19. Nxe6 fxe6 20.
Rab1 Bd4 21. Rxb7+ Kd6 22. c5+ Bxc5 23. Rd1+ Ke5 24. Re1+ Kf6 25. Bxc6 Rd2 26.
Rf1+ Rf2 27. Rxf2+ Bxf2 28. g3 Rc8 29. Bd7 Rc2 30. Be8 Bc5 31. a4 g5 32. Rxh7
g4 33. Rf7+ Ke5 34. Rf1 Bf2 35. Bb5 Kd4 36. Bd7 Ke5 37. Bb5 Rd2 38. Bc6 Kd4 39.
Bd7 e5 40. Bxg4 e4 41. h4 Bxg3 42. h5 Rh2+ 43. Kg1 e3 44. Rd1+ Ke5 45. Bf3 Rf2
46. Bg4 Rf4 47. Be2 Bf2+ 48. Kg2 Rf8 49. Rf1 Rg8+ 50. Kf3 *
Position (FEN): 6r1/p7/8/4k2P/P7/4pK2/4Bb2/5R2 b - - 13 50
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1069
Best move: Rg3#