Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bd7 8.
Bxc6 bxc6 9. O-O c5 10. Nb3 c6 11. f3 c4 12. fxe4 cxb3 13. Be3 bxc2 14. Qxc2
Qa5 15. Qf2 Be6 16. Nc3 Bb4 17. Rac1 O-O 18. a3 Be7 19. exd5 cxd5 20. Bd4 Rfc8
21. Rfd1 Rc4 22. b3 Rcc8 23. a4 a6 24. Rc2 Rc6 25. Rb1 Rac8 26. b4 Qc7 27. b5
axb5 28. axb5 Rc4 29. b6 Qb7 30. Ra1 Rxd4 31. Ra7 Qxb6 32. Rxe7 Qb3 33. Qxd4
Qxc2 34. Qd1 Qf5 35. Ne2 Qxe5 36. Kh1 Kf8 37. Ra7 Rc7 38. Ra8+ Ke7 39. Qb1 g6
40. Qb4+ Kf6 41. Qh4+ Qg5 42. Qd4+ Qe5 43. Qh4+ Kg7 44. Qd8 Rc1+ 45. Ng1 Rxg1+
46. Kxg1 *
Position (FEN): R2Q4/5pkp/4b1p1/3pq3/8/8/6PP/6K1 b - - 0 46
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 400
Best move: Qe1#