Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 d6 3. Bc4 e6 4. Nc3 Nf6 5. d4 cxd4 6. Nxd4 Nc6 7. Nxc6 bxc6 8.
Be3 d5 9. exd5 cxd5 10. Bb5+ Bd7 11. Bxd7+ Qxd7 12. O-O Bd6 13. Bg5 Be7 14. Qd3
O-O 15. Rad1 Rfd8 16. f4 h6 17. Bh4 Rab8 18. b3 Qc7 19. Ne2 Rdc8 20. Rc1 Ne4
21. Bxe7 Qxe7 22. f5 Qc5+ 23. Kh1 Nf2+ 24. Rxf2 Qxf2 25. fxe6 fxe6 26. Nd4 e5
27. Nf5 e4 28. Qxd5+ Kh7 29. Qxe4 Re8 30. Qg4 Re1+ 31. Rxe1 *
Position (FEN): 1r6/p5pk/7p/5N2/6Q1/1P6/P1P2qPP/4R2K b - - 0 31
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 636
Best move: Qxe1#