Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nc3 e6 3. f4 Nc6 4. Nf3 a6 5. d4 cxd4 6. Nxd4 Qc7 7. Be3 Bb4 8. Ne2
Nf6 9. a3 Ng4 10. Qc1 Ba5 11. h3 Nxe3 12. Qxe3 Bb6 13. Qg3 O-O 14. f5 Qxg3+ 15.
Nxg3 Nd4 16. O-O-O exf5 17. exf5 d6 18. Bd3 Nc6 19. Nd5 Bd8 20. f6 gxf6 21. Ne4
Be6 22. Ndxf6+ Bxf6 23. Nxf6+ Kg7 24. Nxh7 f6 25. Rhf1 Rf7 26. Rf3 Ne5 27. Rg3+
Kh8 28. Be4 f5 29. Ng5 fxe4 30. Nxe6 Rd7 31. Re3 d5 32. Nc5 Rc7 33. Rxd5 Nc4
34. Rxe4 b5 35. Rh5+ Kg8 36. Rg4+ Rg7 37. Rxg7+ Kxg7 38. Rg5+ Kh6 39. h4 Re8
40. b3 *
Position (FEN): 4r3/8/p6k/1pN3R1/2n4P/PP6/2P3P1/2K5 b - - 0 40
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 591
Best move: Re1#