Chess puzzle (Checkmate)
Moves: 1. d4 e6 2. c3 f5 3. h3 Nf6 4. g4 b6 5. Bg2 Ne4 6. Nd2 Bb7 7. Qc2 d5 8. Nxe4
fxe4 9. Bf4 Be7 10. e3 O-O 11. Ne2 Ba6 12. O-O-O Bd3 13. Rxd3 exd3 14. Qxd3 Bd6
15. Kb1 c5 16. h4 Nc6 17. h5 a6 18. h6 g6 19. dxc5 bxc5 20. Bxd5 Bxf4 21. Bxe6+
Rf7 22. Bxf7+ Kxf7 23. Qc4+ Kf8 24. Nxf4 Qd6 25. Qd5 Rd8 26. Qxd6+ Rxd6 27. Kc2
Ne5 28. Rg1 Ke7 29. a4 Nf3 30. Rg3 Rd2+ 31. Kc1 Rxf2 32. Nh3 Rf1+ 33. Kc2 Kd6
34. g5 c4 35. b3 Ne1+ 36. Kb2 Nd3+ 37. Ka3 *
Position (FEN): 8/7p/p2k2pP/6P1/P1p5/KPPnP1RN/8/5r2 b - - 4 37
Black to move.
Themes:  Endgame Anastasia's Mate, Mate in 1 
Puzzle rating: 597
Best move: Ra1#