Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Nf6 5. Nf3 Bd6 6. O-O O-O 7. Bg5 c6 8.
Re1 Be6 9. c3 Nbd7 10. Nbd2 Qc7 11. Rc1 Rfe8 12. Bh4 Bg4 13. Bg3 Bxg3 14. hxg3
a6 15. b4 a5 16. a3 axb4 17. axb4 b6 18. Qb3 c5 19. bxc5 bxc5 20. Bb1 cxd4 21.
cxd4 Rxe1+ 22. Rxe1 Rb8 23. Qd3 h6 24. Ne5 g6 25. Nxg6 Ne4 26. Ne7+ Kg7 27.
Nxe4 dxe4 28. Qxe4 Nf6 29. Nf5+ Bxf5 30. Qxf5 Rb2 31. Kh2 Qc3 32. Rd1 Rxf2 33.
Qd3 Qc6 34. d5 Qc5 35. Rd2 Ng4+ 36. Kh3 f5 37. Qd4+ Qxd4 38. Rxd4 Rf1 39. Bxf5
Ne3 40. Bd3 *
Position (FEN): 8/6k1/7p/3P4/3R4/3Bn1PK/6P1/5r2 b - - 2 40
Black to move.
Themes:  Endgame Anastasia's Mate, Mate in 1 
Puzzle rating: 509
Best move: Rh1#