Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Nf6 5. d4 c6 6. Bd2 Bf5 7. Nd5 Qd8 8.
Nxf6+ exf6 9. c3 Nd7 10. Ne2 Nb6 11. Bb3 Bd6 12. O-O Qc7 13. Ng3 Be6 14. Qh5
O-O-O 15. Bxe6+ fxe6 16. Ne4 Nc4 17. Nxd6+ Qxd6 18. Bc1 e5 19. b3 Nb6 20. dxe5
Qxe5 21. Qg4+ f5 22. Qf3 Qe4 23. Qg3 g6 24. Bg5 Rd3 25. f3 Qd5 26. c4 Qd4+ 27.
Kh1 Nd7 28. Qe1 b6 29. Qe6 Kb7 30. Qe2 h6 31. Rad1 Rxd1 32. Rxd1 Qg7 33. Bc1
Rd8 34. Qd2 Qe7 35. Qxh6 Nc5 36. Rxd8 *
Position (FEN): 3R4/pk2q3/1pp3pQ/2n2p2/2P5/1P3P2/P5PP/2B4K b - - 0 36
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 803
Best move: Qe1#