Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 e6 3. d4 d5 4. exd5 exd5 5. Qe2+ Be6 6. Ng5 Qd7 7. Nxe6 fxe6 8.
Qb5 Nc6 9. dxc5 a6 10. Qa4 Bxc5 11. Be2 Nf6 12. Nc3 O-O 13. O-O Qf7 14. a3 b5
15. Nxb5 axb5 16. Qxb5 Nd4 17. Qxc5 Nxe2+ 18. Kh1 Ne4 19. Qe3 Nxc1 20. f3 Nd6
21. Raxc1 h6 22. Rfe1 Rae8 23. Re2 Nf5 24. Qb6 Qf6 25. c3 Qg5 26. Rce1 Nh4 27.
Rc2 Qf5 28. Rce2 e5 29. Qd6 Ng6 30. Qxd5+ Kh8 31. Qe4 Qf6 32. b4 Kh7 33. a4 Qa6
34. a5 Qb5 35. Ra2 Ra8 36. Rea1 Rfc8 37. Rc2 Qc4 38. Qxc4 Rxc4 39. a6 Ne7 40.
b5 Nd5 41. Rcc1 Nb6 42. Rc2 Kg6 43. Rd1 Kf5 44. Rd6 Na4 45. b6 Rxa6 46. b7 Rxd6
47. b8=Q *
Position (FEN): 1Q6/6p1/3r3p/4pk2/n1r5/2P2P2/2R3PP/7K b - - 0 47
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 598
Best move: Rd1#