Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 d6 3. Nc3 a6 4. Bc4 b5 5. Bb3 b4 6. Bd5 Ra7 7. Na4 c6 8. Bc4
Nd7 9. d4 Ndf6 10. dxe5 Nxe4 11. Bg5 f6 12. Bh4 c5 13. Qe2 g5 14. Qxe4 gxh4 15.
Nxh4 f5 16. Nxf5 Bxf5 17. Qxf5 dxe5 18. Qxe5+ Qe7 19. Nxc5 Qxe5+ 20. Be2 Qxc5
21. Rd1 Kf7 22. O-O Qxc2 23. Rfe1 Qxb2 24. Bg4 h5 25. Bh3 Kg7 26. Rd7+ Rxd7 27.
Bxd7 Qxa2 28. Be6 Nf6 29. Bxa2 Nd5 30. Bxd5 Bc5 31. Re7+ Kf6 32. Re6+ Kg5 33.
Rxa6 Rf8 34. Ra5 Bd4 35. Be4+ Kf6 36. Rd5 b3 37. Rxd4 b2 38. Rb4 Rd8 39. Rxb2 *
Position (FEN): 3r4/8/5k2/7p/4B3/8/1R3PPP/6K1 b - - 0 39
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 599
Best move: Rd1#