Chess puzzle (Checkmate)
Moves: 1. g4 d5 2. Bg2 c6 3. h3 h5 4. g5 e5 5. d4 Bd6 6. dxe5 Bxe5 7. c3 Be6 8. Nf3
Bd6 9. Nd4 Nd7 10. h4 Ne7 11. Nd2 Ng6 12. N2f3 Qc7 13. Qc2 Ne7 14. Be3 O-O-O
15. O-O-O Kb8 16. Nxe6 fxe6 17. Nd4 e5 18. Ne6 Qc8 19. Nxd8 Qxd8 20. Kb1 Rf8
21. Qa4 a6 22. b4 g6 23. Bc5 Bxc5 24. bxc5 Nxc5 25. Qa3 Qb6+ 26. Ka1 Nf5 27.
Rb1 Qa7 28. Rb2 Rf7 29. Rhb1 Kc8 30. e4 Nxh4 31. Bh1 d4 32. cxd4 exd4 33. Qb4
Nd3 34. Qd6 Nxb2 35. Qe6+ Rd7 36. Qe8+ Kc7 37. Qe5+ Kc8 38. Qe8+ Rd8 39. Qe6+
Kb8 40. Qe5+ Ka8 41. Rxb2 Qb8 42. Qg3 d3 43. Rd2 Qc8 44. Qxh4 Qe6 45. f4 Qd6
46. e5 Qd4+ 47. Kb1 Qc3 48. Qf2 Rd4 49. Rb2 d2 50. Bf3 d1=Q+ 51. Bxd1 *
Position (FEN): k7/1p6/p1p3p1/4P1Pp/3r1P2/2q5/PR3Q2/1K1B4 b - - 0 51
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 809
Best move: Rxd1#