Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. exd5 Qxd5 3. d4 Bf5 4. Nf3 Nf6 5. Nc3 Qd8 6. Bg5 e6 7. Bb5+ c6 8.
Ba4 Be7 9. Qe2 O-O 10. O-O-O Nd5 11. Nxd5 cxd5 12. h4 f6 13. Bf4 Qa5 14. Bb3
Nc6 15. Nh2 Nb4 16. a3 Nc6 17. g4 Bg6 18. Qxe6+ Bf7 19. Qe3 Rfe8 20. Qg3 Rac8
21. g5 Bh5 22. f3 fxg5 23. Bxg5 Qb5 24. Bxe7 Nxe7 25. Kb1 Nf5 26. Qg5 g6 27.
Rhg1 a5 28. Qxf5 Rcd8 29. Qxh5 Re3 30. Rxg6+ hxg6 31. Qxg6+ Kf8 32. Qh6+ Kg8
33. Qxe3 a4 34. Qe6+ Kf8 35. Qf6+ Ke8 36. Re1+ Kd7 37. Ba2 Kc8 38. Ng4 Qa5 39.
Qe6+ Kb8 40. f4 Ka7 41. f5 Rg8 42. Qxg8 *
Position (FEN): 6Q1/kp6/8/q2p1P2/p2P2NP/P7/BPP5/1K2R3 b - - 0 42
Black to move.
Themes: Hanging Piece Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 581
Best move: Qxe1#