Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 c6 5. Be2 Bf5 6. O-O Nf6 7. d3 e6 8.
Bd2 Qc7 9. Be3 Bd6 10. Bg5 Nbd7 11. Bh4 O-O-O 12. Bg3 h5 13. Ng5 Rdf8 14. Bxd6
Qxd6 15. Nce4 Bxe4 16. Nxe4 Qc7 17. f4 Nb6 18. c4 Nxe4 19. dxe4 Rd8 20. Qc2 Rd4
21. b3 Rhd8 22. Rfd1 Qxf4 23. Bxh5 g6 24. Bf3 g5 25. Qf2 Rxd1+ 26. Rxd1 g4 27.
Rxd8+ Kxd8 28. Qh4+ Ke8 29. Qxg4 Qe3+ 30. Kh1 *
Position (FEN): 4k3/pp3p2/1np1p3/8/2P1P1Q1/1P2qB2/P5PP/7K b - - 2 30
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 541
Best move: Qe1#