Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. e3 g6 3. Nf3 Bg7 4. c4 d6 5. Nc3 O-O 6. Be2 Nbd7 7. O-O e5 8. dxe5
Nxe5 9. b3 Nc6 10. Bb2 Bf5 11. Nd5 Nxd5 12. Bxg7 Nxe3 13. fxe3 Kxg7 14. Nd4 Bd7
15. Bf3 Qg5 16. Qd3 Rae8 17. Rae1 Nb4 18. Qd2 Nc6 19. Nxc6 Bxc6 20. Qd4+ Qe5
21. Qxa7 Re7 22. b4 Rfe8 23. b5 Bxf3 24. Rxf3 Qc3 25. Ref1 b6 26. Qa4 f5 27.
Rd1 Rxe3 28. Rxe3 Qxe3+ 29. Kf1 Qf4+ 30. Kg1 Re2 31. Qa8 Qf2+ 32. Kh1 Re1+ 33.
Rxe1 *
Position (FEN): Q7/2p3kp/1p1p2p1/1P3p2/2P5/8/P4qPP/4R2K b - - 0 33
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 610
Best move: Qxe1#